Tuesday, 8 September 2026
Tuesday, 8 September 2026
- In brief
- 1India's space agency says it will not be privatised. Its workhorse rocket is already made by companies.
- 2Fifteen years, $6.27bn, then start again
- 3What 1,000 launches a year actually needs
- 4UK buys two more launchpads in Shetland
- 5Blue Origin's rocket is still on the ground
- 6Isar has rockets three to seven in build
- 7Europe's leaders meet in Paris this week
- 8NASA's Mars missions skipped the usual contest
- 9Four spacewalks in a month, and a reflector fitted
- 10A weapons lab built the eye for a Space Force chase
- 11Europe's Greenland money lands at a satellite operator
- 12A cargo ship leaves for the station on Wednesday
- 13Roman's starlight blocker switched on
- 14The Moon may have formed in about five hours
- 15A model says low orbit could hold more
- 16Satellite pictures of Earth get easier to buy
- 17The Moon hides Jupiter in daylight
- TruthThe truth, across the day
8 Sept · Space · In brief
Space · Tuesday, 8 September 2026
Space, in brief
17 stories · 21 sources
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What is moving · 1 of 3
Pressure from ISRO's own staff
a written letter to the chairman, and no formal answer from the Department of Space
What is moving · 2 of 3
The push to hand work to companies
rocket production and one launcher's technology have already moved
What is moving · 3 of 3
The agency's standing
the regulator calls ISRO the bedrock of India's space sector
India's space agency says it will not be privatised. Its workhorse rocket is already made by companies.
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India's space agency ISRO said on Sunday it will "neither be privatised nor will its importance be diminished".
Who is involved
ISRO
India's national space agency, which built the country's rockets and landed a craft near the Moon's south pole; it says it is not being privatised [1]
Who is involved
V. Narayanan
ISRO's chairman; the staff association addressed its letter to him [1]
Why it matters
Watch whether the Department of Space publishes an actual list of what is being transferred; until it does, ISRO's staff are reading about their own work in the press.
What's really going on
India's space agency answered a different question from the one its own staff asked.
What's really going on
They asked who will build the rockets; ISRO promised to keep advanced research, strategic missions and frontier capabilities, while production of the Polar Satellite Launch Vehicle has already moved to a consortium led by Hindustan Aeronautics and Larsen and Toubro.
Who gains
Hindustan Aeronautics and Larsen and Toubro
The consortium they lead already produces India's Polar Satellite Launch Vehicle, and Hindustan Aeronautics has been given the technology for the Small Satellite Launch Vehicle as well.
Who pays
ISRO staff who build and operate hardware
The agency's promise covers research, strategic missions and frontier capabilities, and the production work has already gone to companies.
Nobody knows yet
Which ISRO activities are actually being transferred, and when.
The staff association asked for exactly that and said no formal communication had come from the Department of Space, which oversees the agency. Reuters reports no list has been published.
Nobody knows yet
How many ISRO staff this affects.
Neither ISRO's statement nor the staff letter, as reported, puts a number on the people whose work moves.
The short version
That's the story in short.
The whole story has 10 more parts.
or swipe up for the next storyor scroll on for the next story ↓
The whole story, in 10 parts ↓
Part 1 of 10 · Who else is involved
Hindustan Aeronautics
a state-owned Indian aircraft and engine maker; it co-leads the consortium building the Polar Satellite Launch Vehicle and has been given the technology for the smaller launcher [1]
Part 1 of 10 · Who else is involved
Larsen and Toubro
one of India's largest private engineering and construction firms; the other leader of that consortium [1]
Part 2 of 10
The statement answered a letter of 4 September from ISRO's own staff association, which asked chairman V.
Part 2 of 10
Narayanan about reports that manufacturing and operational work is being moved to companies.
Part 3 of 10
Staff also said the Department of Space, India's government department that oversees ISRO, had sent them no formal communication about any of it.
Part 4 of 10
ISRO named what it is keeping: advanced space research and technology development, national and strategic missions, space science and exploration, and critical and frontier space capabilities.
Part 5 of 10
Routine rocket production is not on that list, and it has already gone.
Part 5 of 10
A consortium led by Hindustan Aeronautics and Larsen and Toubro now produces the Polar Satellite Launch Vehicle, India's most-flown launcher.
Part 6 of 10
India's government has also handed Hindustan Aeronautics the technology for the Small Satellite Launch Vehicle, a smaller rocket for small payloads.
Part 7 of 10
Pawan Goenka, who chairs India's space regulator IN-SPACe, said ISRO's role "is by no means diminishing" and called it the bedrock of the sector.
Part 8 of 10
India opened its space sector to private companies in 2020 under Prime Minister Narendra Modi's government, and industry has increasingly taken on rocket manufacturing since.
Part 9 of 10
ISRO is not a small agency being wound down.
Part 9 of 10
It has sent a spacecraft to Mars, landed near the Moon's south pole, built its own launchers and is preparing India's first crewed spaceflight.
Part 10 of 10
It flew EOS-05, an Earth-watching satellite of roughly 2.5 tons, to a high orbit last week, replacing one lost in a launch failure in 2021.
2 sources
India's space agency says it will not be privatised. Its workhorse rocket is already made by companies.
The full story
India's space agency says it will not be privatised. Its workhorse rocket is already made by companies.
India's space agency ISRO said on Sunday it will "neither be privatised nor will its importance be diminished".
The statement answered a letter of 4 September from ISRO's own staff association, which asked chairman V. Narayanan about reports that manufacturing and operational work is being moved to companies.
Staff also said the Department of Space, India's government department that oversees ISRO, had sent them no formal communication about any of it.
ISRO named what it is keeping: advanced space research and technology development, national and strategic missions, space science and exploration, and critical and frontier space capabilities.
Routine rocket production is not on that list, and it has already gone. A consortium led by Hindustan Aeronautics and Larsen and Toubro now produces the Polar Satellite Launch Vehicle, India's most-flown launcher.
India's government has also handed Hindustan Aeronautics the technology for the Small Satellite Launch Vehicle, a smaller rocket for small payloads.
Pawan Goenka, who chairs India's space regulator IN-SPACe, said ISRO's role "is by no means diminishing" and called it the bedrock of the sector.
India opened its space sector to private companies in 2020 under Prime Minister Narendra Modi's government, and industry has increasingly taken on rocket manufacturing since.
ISRO is not a small agency being wound down. It has sent a spacecraft to Mars, landed near the Moon's south pole, built its own launchers and is preparing India's first crewed spaceflight.
It flew EOS-05, an Earth-watching satellite of roughly 2.5 tons, to a high orbit last week, replacing one lost in a launch failure in 2021.
Why it matters. Watch whether the Department of Space publishes an actual list of what is being transferred; until it does, ISRO's staff are reading about their own work in the press.
Fifteen years, $6.27bn, then start again
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The US Space Force is beginning work on a new ground control system for its future GPS satellites, SpaceNews reports.
It is applying lessons from OCX, a ground control programme the US defence department cancelled earlier this year, after 15 years of development and $6.27 billion.
GPS is the constellation of satellites that gives position, navigation and timing to military and civilian users worldwide; the satellites fly, but the ground software that commands them and handles their signals is a separate build.
Why it matters
Ground software has no launch to watch and no photograph, so it is the part of a space programme that can run over for a decade without anyone outside noticing.
How it works
Most of the people are in the part nobody calls important
How it works
ISRO promised to keep India's advanced research and its hardest missions. Building the rocket that flies most often was not on the list.
How it works · step 1 of 6
A space agency does two kinds of work
How it works · step 2 of 6
The rare first-time thing, done once
How it works · step 3 of 6
And the routine build of what already works, done every year
How it works · step 4 of 6
The routine build is where most of the staff are
How it works · step 5 of 6
A routine can be learned by outsiders, so it is the part contracted out
How it works · step 6 of 6
The agency keeps the rare work, truthfully, and most of its people are not in it
The twist
ISRO promised to keep advanced research, strategic missions and frontier capabilities, and not one of those words covers assembling the rocket that flies most often.
Seen the same day
the same split, one step further on: the agency kept the choosing and the scientists say the choosing stopped being open, while the building goes to companies
Seen the same day
the US Space Force spent 15 years trying to build GPS ground software in a programme of its own and cancelled it, and the next attempt starts as an architecture it will buy
Seen the same day
the UK government pays for the pads and a private company runs the spaceport, so the state holds the budget and the routine operating sits somewhere else
Seen the same day
ESA says out loud that it presents options and member states decide, which is the same line drawn between the body that knows how and the body that chooses
The catch
This is not a decline. India launches more rockets now than before 2020, and the regulator is right that the sector is bigger.
The catch
What changed is which building the work happens in, and the people who did it are asking who they work for.
The whole
Everyone in this is describing the same change and nobody is lying.
The whole
ISRO's leaders are keeping the work they were asked to keep, the regulator sees a sector that has grown, and the staff who wrote the letter are asking about a job that none of the announcements mentioned.
The whole
Each of them can see their own part clearly and not the other two.
Who pays
US taxpayers
The OCX ground system for GPS ran 15 years and $6.27 billion before the US defence department cancelled it, and the replacement is only starting now.
Nobody knows yet
What the replacement GPS ground system will cost, or when it arrives.
SpaceNews reports only that the US Space Force is starting work, after the US defence department cancelled the $6.27 billion OCX programme this year, following 15 years of development. No new figure or date is given.
1 source
Fifteen years, $6.27bn, then start again
The full story
Fifteen years, $6.27bn, then start again
The US Space Force is beginning work on a new ground control system for its future GPS satellites, SpaceNews reports. It is applying lessons from OCX, a ground control programme the US defence department cancelled earlier this year, after 15 years of development and $6.27 billion. GPS is the constellation of satellites that gives position, navigation and timing to military and civilian users worldwide; the satellites fly, but the ground software that commands them and handles their signals is a separate build.
Why it matters. Ground software has no launch to watch and no photograph, so it is the part of a space programme that can run over for a decade without anyone outside noticing.
What 1,000 launches a year actually needs
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The US updated its National Space Transportation Policy in a presidential memorandum on 20 August, calling for launch ranges able to support more than 1,000 launches and reentries a year by 2030.
There were 181 launches from US soil in 2025, and about a tenth of that in 2013.
Brian Weeden of the Aerospace Corporation says the shortage is not launchpads but the plumbing around them: bridges that are choke points, fuel storage, and buildings to receive payloads.
Why it matters
It moves the argument from rockets to concrete. The thing that limits how often anyone can fly is a shed big enough to unpack a satellite in.
Who gains
SpaceX
The US policy calling for more than 1,000 launches a year is asking for more of the market it already dominates, and it has secured land in Louisiana for a $100 billion spaceport that can reach polar orbits its Florida and Texas pads cannot fly to safely.
Who pays
People living near Vandenberg Space Force Base in California
Scientific American reports too many people live nearby for SpaceX's frequent, noisy Starship launches to be tolerated there, which is part of why the company went looking in Louisiana.
Nobody knows yet
Whether the United States can reach more than 1,000 launches a year by 2030.
It ran 181 from US soil in 2025. Brian Weeden of the Aerospace Corporation says the limit is bridges, fuel storage and payload processing buildings rather than launchpads, and none of those has a published build schedule.
The full story
What 1,000 launches a year actually needs
The US updated its National Space Transportation Policy in a presidential memorandum on 20 August, calling for launch ranges able to support more than 1,000 launches and reentries a year by 2030. There were 181 launches from US soil in 2025, and about a tenth of that in 2013. Brian Weeden of the Aerospace Corporation says the shortage is not launchpads but the plumbing around them: bridges that are choke points, fuel storage, and buildings to receive payloads.
Why it matters. It moves the argument from rockets to concrete. The thing that limits how often anyone can fly is a shed big enough to unpack a satellite in.
UK buys two more launchpads in Shetland
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The UK government will put 30 million pounds into SaxaVord Spaceport, on the Shetland Islands off Scotland's north coast, Aviation Week reports.
The money funds two additional launchpads as the site moves toward regular commercial launches. Assured access to orbit is named as a priority of the country's new Space Strategy.
No British-built rocket has yet reached orbit from British soil.
Why it matters
The UK government is paying to expand a spaceport it does not run, days after a German company reached orbit from a Norwegian one.
How it works
the UK government pays for the pads and a private company runs the spaceport, so the state holds the budget and the routine operating sits somewhere else
The idea, in story 2: Most of the people are in the part nobody calls important →Who gains
SaxaVord Spaceport in the Shetland Islands
The UK government is putting 30 million pounds into two more launchpads at the privately run site and has made assured access to orbit a priority of its Space Strategy.
1 source
UK buys two more launchpads in Shetland
The full story
UK buys two more launchpads in Shetland
The UK government will put 30 million pounds into SaxaVord Spaceport, on the Shetland Islands off Scotland's north coast, Aviation Week reports. The money funds two additional launchpads as the site moves toward regular commercial launches. Assured access to orbit is named as a priority of the country's new Space Strategy. No British-built rocket has yet reached orbit from British soil.
Why it matters. The UK government is paying to expand a spaceport it does not run, days after a German company reached orbit from a Norwegian one.
Blue Origin's rocket is still on the ground
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Blue Origin, the space company owned by Amazon founder Jeff Bezos, has given no meaningful update on its heavy-lift New Glenn rocket for about a month, Ars Technica reports.
The rocket has been grounded since an explosion on the pad at Cape Canaveral in Florida in May.
The company says it is aiming to fly again by the end of the year, which Ars says there is good reason to doubt.
In the same period it broke ground on a new payload processing facility in Florida.
Why it matters
Payload processing buildings are exactly the shortage Brian Weeden names in the spaceport story above, so the grounded company is building the scarce thing rather than the rocket.
Who gains
Builders of payload processing buildings
Brian Weeden names those buildings as a particular shortage across US spaceports, and Blue Origin broke ground on one in Florida while its rocket stayed on the pad.
Nobody knows yet
When Blue Origin's New Glenn rocket flies again.
It has been grounded since an on-pad explosion at Cape Canaveral in May. The company says it is targeting the end of the year, and Ars Technica says there is good reason for scepticism.
2 sources
Blue Origin's rocket is still on the ground
The full story
Blue Origin's rocket is still on the ground
Blue Origin, the space company owned by Amazon founder Jeff Bezos, has given no meaningful update on its heavy-lift New Glenn rocket for about a month, Ars Technica reports. The rocket has been grounded since an explosion on the pad at Cape Canaveral in Florida in May. The company says it is aiming to fly again by the end of the year, which Ars says there is good reason to doubt. In the same period it broke ground on a new payload processing facility in Florida.
Why it matters. Payload processing buildings are exactly the shortage Brian Weeden names in the spaceport story above, so the grounded company is building the scarce thing rather than the rocket.
Isar has rockets three to seven in build
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Isar Aerospace, the German company that reached orbit from Norway at the weekend, is now working toward the first paid flight of its Spectrum rocket while scaling up production and adding launch sites, Aviation Week reports.
Rockets three through seven are already in manufacturing.
Payload reports it is the first company in the European Launcher Challenge, a European Space Agency programme backing new launch firms, to reach orbit.
Why it matters
One flight proves a rocket can work. A production line is what decides whether Europe can actually buy launches at home.
Who gains
Isar Aerospace
It reached orbit on its second attempt, and has rockets three through seven in build days before European ministers meet in Paris to decide how much to spend on launch.
Nobody knows yet
How much of Europe's launch demand Isar Aerospace can take.
Aviation Week reports rockets three through seven in manufacturing and a plan for more launch sites, without naming a flight rate or a date for the first paid mission.
3 sources
Isar has rockets three to seven in build
The full story
Isar has rockets three to seven in build
Isar Aerospace, the German company that reached orbit from Norway at the weekend, is now working toward the first paid flight of its Spectrum rocket while scaling up production and adding launch sites, Aviation Week reports. Rockets three through seven are already in manufacturing. Payload reports it is the first company in the European Launcher Challenge, a European Space Agency programme backing new launch firms, to reach orbit.
Why it matters. One flight proves a rocket can work. A production line is what decides whether Europe can actually buy launches at home.
Europe's leaders meet in Paris this week
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The International Space Summit takes place in Paris on 9 and 10 September, bringing together heads of government, ministers, industry and astronauts.
Josef Aschbacher, who runs the European Space Agency, will tell them that low Earth orbit is entering a new phase.
He will say the Moon is becoming a place for sustained operations, and that the groundwork for Mars missions is being laid now.
ESA says its own job is to present technically sound and affordable options, and that the strategic direction belongs to member states.
Why it matters
The agency is saying openly that it decides nothing. Whatever Europe does next is decided by the ministers in that room.
How it works
ESA says out loud that it presents options and member states decide, which is the same line drawn between the body that knows how and the body that chooses
The idea, in story 2: Most of the people are in the part nobody calls important →Nobody knows yet
What Europe's leaders will actually commit to in Paris.
ESA says its director general will present options and that the strategic direction belongs to member states, so the agency's own announcement cannot say what will be decided.
1 source
Europe's leaders meet in Paris this week
The full story
Europe's leaders meet in Paris this week
The International Space Summit takes place in Paris on 9 and 10 September, bringing together heads of government, ministers, industry and astronauts. Josef Aschbacher, who runs the European Space Agency, will tell them that low Earth orbit is entering a new phase. He will say the Moon is becoming a place for sustained operations, and that the groundwork for Mars missions is being laid now. ESA says its own job is to present technically sound and affordable options, and that the strategic direction belongs to member states.
Why it matters. The agency is saying openly that it decides nothing. Whatever Europe does next is decided by the ministers in that room.
NASA's Mars missions skipped the usual contest
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NASA's Mars sample return programme was meant to bring rock samples back to Earth. It is now on indefinite hold.
The agency's three upcoming robotic Mars missions were chosen through what The Planetary Society calls an opaque process.
That is a departure from the competitive, peer-reviewed selection guided by the decadal survey, the community's own ten-year priority list, which has shaped NASA science for a generation.
One of the three, SR-1 Freedom, would fly the first nuclear-fission-powered interplanetary spacecraft.
Why it matters
Scientists are objecting to how the missions were picked rather than to the missions, which is a complaint about who is allowed in the room.
How it works
the same split, one step further on: the agency kept the choosing and the scientists say the choosing stopped being open, while the building goes to companies
The idea, in story 2: Most of the people are in the part nobody calls important →Who pays
Scientists who expected an open contest for NASA's Mars missions
The Planetary Society says the three upcoming robotic Mars missions were selected through an opaque process, a departure from the competitive, peer-reviewed route set by the decadal survey.
1 source
NASA's Mars missions skipped the usual contest
The full story
NASA's Mars missions skipped the usual contest
NASA's Mars sample return programme was meant to bring rock samples back to Earth. It is now on indefinite hold. The agency's three upcoming robotic Mars missions were chosen through what The Planetary Society calls an opaque process. That is a departure from the competitive, peer-reviewed selection guided by the decadal survey, the community's own ten-year priority list, which has shaped NASA science for a generation. One of the three, SR-1 Freedom, would fly the first nuclear-fission-powered interplanetary spacecraft.
Why it matters. Scientists are objecting to how the missions were picked rather than to the missions, which is a complaint about who is allowed in the room.
Four spacewalks in a month, and a reflector fitted
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Jessica Meir of NASA and Sophie Adenot of the European Space Agency spent six hours and 49 minutes outside the International Space Station on 1 September, closing a month with four spacewalks in it.
They fitted a new reflector to the forward end of the Harmony module to help arriving spacecraft judge their approach, swapped a camera on the station's truss and swabbed the outside for microbes.
Work on the Alpha Magnetic Spectrometer's radiator was deferred to a future walk. It was the 284th spacewalk in the station's history.
Why it matters
None of the four was an emergency. The station only keeps working because people go outside on a schedule and change parts.
Nobody knows yet
Why Sophie Adenot's left arm lost movement during the spacewalk.
NASA says Jessica Meir judged that the glove heater harness was likely catching in the shoulder joint, and that unzipping the joint seemed to resolve it. The word in NASA's own account is likely.
Good news
Jessica Meir and Sophie Adenot spent six hours and 49 minutes outside the International Space Station on 1 September and fitted a reflector to the Harmony module, so spacecraft arriving later can judge their approach. It was the 284th spacewalk in the station's history and the last of four in a single month.
3 sources
Four spacewalks in a month, and a reflector fitted
The full story
Four spacewalks in a month, and a reflector fitted
Jessica Meir of NASA and Sophie Adenot of the European Space Agency spent six hours and 49 minutes outside the International Space Station on 1 September, closing a month with four spacewalks in it. They fitted a new reflector to the forward end of the Harmony module to help arriving spacecraft judge their approach, swapped a camera on the station's truss and swabbed the outside for microbes. Work on the Alpha Magnetic Spectrometer's radiator was deferred to a future walk. It was the 284th spacewalk in the station's history.
Why it matters. None of the four was an emergency. The station only keeps working because people go outside on a schedule and change parts.
A weapons lab built the eye for a Space Force chase
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A Rocket Lab spacecraft used an optical instrument built by Lawrence Livermore National Laboratory, a US government weapons and physics laboratory in California, to track another satellite during a Space Force exercise, SpaceNews reports.
The exercise, Victus Haze, tested how quickly a spacecraft can be launched and then put to work inspecting an object already in orbit.
Why it matters
The lab that designs nuclear weapons now supplies the camera that lets one satellite watch another, which is a plain measure of who the customer for orbital cameras has become.
1 source
A weapons lab built the eye for a Space Force chase
The full story
A weapons lab built the eye for a Space Force chase
A Rocket Lab spacecraft used an optical instrument built by Lawrence Livermore National Laboratory, a US government weapons and physics laboratory in California, to track another satellite during a Space Force exercise, SpaceNews reports. The exercise, Victus Haze, tested how quickly a spacecraft can be launched and then put to work inspecting an object already in orbit.
Why it matters. The lab that designs nuclear weapons now supplies the camera that lets one satellite watch another, which is a plain measure of who the customer for orbital cameras has become.
Europe's Greenland money lands at a satellite operator
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European Commission President Ursula von der Leyen announced a 200 million euro package for Greenland on Monday, to be spent this year and in 2027 on internet connectivity, mining, energy, education, fisheries and housing.
She signed the declaration with Greenland's Prime Minister Jens-Frederik Nielsen and Denmark's Prime Minister Mette Frederiksen. A Reuters photograph shows the three visiting the satellite operator Eutelsat OneWeb in Nuuk.
Greenland is a semi-autonomous territory of Denmark, and the EU has stepped up its attention since US President Donald Trump began saying the United States should take control.
Why it matters
Cables do not reach most of Greenland, so a satellite company is what digital connectivity there actually means.
2 sources
Europe's Greenland money lands at a satellite operator
The full story
Europe's Greenland money lands at a satellite operator
European Commission President Ursula von der Leyen announced a 200 million euro package for Greenland on Monday, to be spent this year and in 2027 on internet connectivity, mining, energy, education, fisheries and housing. She signed the declaration with Greenland's Prime Minister Jens-Frederik Nielsen and Denmark's Prime Minister Mette Frederiksen. A Reuters photograph shows the three visiting the satellite operator Eutelsat OneWeb in Nuuk. Greenland is a semi-autonomous territory of Denmark, and the EU has stepped up its attention since US President Donald Trump began saying the United States should take control.
Why it matters. Cables do not reach most of Greenland, so a satellite company is what digital connectivity there actually means.
A cargo ship leaves for the station on Wednesday
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Progress 96 is an uncrewed Russian cargo spacecraft. It is due to lift off from Baikonur in Kazakhstan at 12:15 in the afternoon US eastern time on Wednesday 9 September.
It carries about three tons of food, fuel and supplies for the International Space Station. NASA will carry the launch and docking live.
Progress craft are the Russian side's routine supply run, and they burn up in the atmosphere at the end of the mission.
Why it matters
The station holds seven people and grows none of its own food. Everything they eat, drink and breathe arrives on a flight like this one.
1 source
A cargo ship leaves for the station on Wednesday
The full story
A cargo ship leaves for the station on Wednesday
Progress 96 is an uncrewed Russian cargo spacecraft. It is due to lift off from Baikonur in Kazakhstan at 12:15 in the afternoon US eastern time on Wednesday 9 September. It carries about three tons of food, fuel and supplies for the International Space Station. NASA will carry the launch and docking live. Progress craft are the Russian side's routine supply run, and they burn up in the atmosphere at the end of the mission.
Why it matters. The station holds seven people and grows none of its own food. Everything they eat, drink and breathe arrives on a flight like this one.
Roman's starlight blocker switched on
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The Coronagraph Instrument aboard NASA's Nancy Grace Roman Space Telescope was powered up in space on 1 September, starting at 7:27 in the morning US eastern time and finishing 55 minutes later.
A coronagraph blocks a star's glare with a mask and bending mirrors, so the far fainter light reflected off a planet beside it can be photographed.
Months of calibration follow before it does science.
It is aimed at planets that are older, colder and closer to their star than the ones this method has managed so far.
Why it matters
Almost every planet found around another star has been inferred from a dip or a wobble. This instrument is built to take an actual picture.
Good news
The instrument built to photograph planets around other stars was switched on in space on 1 September. The power-up on NASA's Roman telescope began at 7:27 in the morning and finished 55 minutes later.
The full story
Roman's starlight blocker switched on
The Coronagraph Instrument aboard NASA's Nancy Grace Roman Space Telescope was powered up in space on 1 September, starting at 7:27 in the morning US eastern time and finishing 55 minutes later. A coronagraph blocks a star's glare with a mask and bending mirrors, so the far fainter light reflected off a planet beside it can be photographed. Months of calibration follow before it does science. It is aimed at planets that are older, colder and closer to their star than the ones this method has managed so far.
Why it matters. Almost every planet found around another star has been inferred from a dip or a wobble. This instrument is built to take an actual picture.
The Moon may have formed in about five hours
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New computer simulations suggest Earth's Moon could have come together within hours of the collision that made it, rather than over a much longer period.
The leading account of the Moon's origin is that a Mars-sized body called Theia struck the young Earth at an angle and threw debris into orbit.
A team led by Adeene Denton at the South-west Research Institute added the strength of the rock to the model, and found that warmer bodies are weaker, which changes how the collision plays out.
Robin Canup's simulations have anchored this field since 2001.
Why it matters
This is a model, not a measurement. Nobody was there, and the only evidence is Moon rock and the physics you choose to put in the code.
Nobody knows yet
How long the Moon really took to form.
The five-hour figure comes from a new computer simulation by Adeene Denton's team at the South-west Research Institute, not from a measurement, and simulations of this collision have been rebuilt repeatedly since 2001.
1 source
The Moon may have formed in about five hours
The full story
The Moon may have formed in about five hours
New computer simulations suggest Earth's Moon could have come together within hours of the collision that made it, rather than over a much longer period. The leading account of the Moon's origin is that a Mars-sized body called Theia struck the young Earth at an angle and threw debris into orbit. A team led by Adeene Denton at the South-west Research Institute added the strength of the rock to the model, and found that warmer bodies are weaker, which changes how the collision plays out. Robin Canup's simulations have anchored this field since 2001.
Why it matters. This is a model, not a measurement. Nobody was there, and the only evidence is Moon rock and the physics you choose to put in the code.
A model says low orbit could hold more
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Researchers publishing in Scientific Reports built an artificial-intelligence model of collision risk in low Earth orbit, the busy band a few hundred kilometres up where most satellites fly.
It uses gradient-boosted decision trees, a standard method that learns patterns from data, to estimate how altitude, orbital tilt, mass and crowding combine into collision risk.
Their conclusion is that meaningful increases in the number of satellites are possible for only a moderate rise in predicted risk.
Why it matters
Every operator wants a number saying orbit is not full yet, and this is one. It is a prediction from a model, not a measurement of anything that has happened.
1 source
A model says low orbit could hold more
The full story
A model says low orbit could hold more
Researchers publishing in Scientific Reports built an artificial-intelligence model of collision risk in low Earth orbit, the busy band a few hundred kilometres up where most satellites fly. It uses gradient-boosted decision trees, a standard method that learns patterns from data, to estimate how altitude, orbital tilt, mass and crowding combine into collision risk. Their conclusion is that meaningful increases in the number of satellites are possible for only a moderate rise in predicted risk.
Why it matters. Every operator wants a number saying orbit is not full yet, and this is one. It is a prediction from a model, not a measurement of anything that has happened.
Satellite pictures of Earth get easier to buy
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The OECD, the Paris-based group of mostly rich countries' governments, published a report on the spread of satellite Earth-observation data and what it means for privacy, security and trust.
Better optics, cheap cloud computing and artificial intelligence have made high-quality satellite imagery both better and far easier to get hold of.
The same report says that combination also creates risks, including for national security.
Why it matters
The pictures used to be taken by governments and read by governments. Now a company takes them and software reads them, which changes who knows what about whom.
Who pays
Anyone whose activity is visible from orbit
The OECD reports that better optics, cheap cloud computing and artificial intelligence have made high-quality satellite imagery far easier for anyone to obtain, with risks for privacy and security.
1 source
Satellite pictures of Earth get easier to buy
The full story
Satellite pictures of Earth get easier to buy
The OECD, the Paris-based group of mostly rich countries' governments, published a report on the spread of satellite Earth-observation data and what it means for privacy, security and trust. Better optics, cheap cloud computing and artificial intelligence have made high-quality satellite imagery both better and far easier to get hold of. The same report says that combination also creates risks, including for national security.
Why it matters. The pictures used to be taken by governments and read by governments. Now a company takes them and software reads them, which changes who knows what about whom.
The Moon hides Jupiter in daylight
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Before dawn on Tuesday a slim crescent Moon, under a tenth lit, sits about five degrees above Jupiter low in the east-north-east.
Later the same day the Moon passes in front of the planet, an event astronomers call an occultation, in full daylight.
Jupiter was lost in the Sun's glare from early July to mid-August, so a telescope before dawn also shows what its cloud belts have been doing since.
Daytime viewing needs a telescope and a clear sky.
Why it matters
It is the same geometry that lets astronomers measure distant worlds: you learn about a thing by timing exactly when something else covers it.
Good news
Before dawn on Tuesday a thin crescent Moon sits about five degrees above Jupiter, and later the same day it passes in front of the planet in full daylight.
1 source
The Moon hides Jupiter in daylight
The full story
The Moon hides Jupiter in daylight
Before dawn on Tuesday a slim crescent Moon, under a tenth lit, sits about five degrees above Jupiter low in the east-north-east. Later the same day the Moon passes in front of the planet, an event astronomers call an occultation, in full daylight. Jupiter was lost in the Sun's glare from early July to mid-August, so a telescope before dawn also shows what its cloud belts have been doing since. Daytime viewing needs a telescope and a clear sky.
Why it matters. It is the same geometry that lets astronomers measure distant worlds: you learn about a thing by timing exactly when something else covers it.
The truth, across the day
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Why it works on people
A reassurance that lists everything it is keeping reads like a full answer, so it is easy to miss that the thing you were worried about is not on the list.
That's the whole Space day.
17 stories, 21 sources.