Thursday, 29 October 2026
Thursday, 29 October 2026
- In brief
- 1Putin says Russia keeps in close contact with Musk's SpaceX so their satellite networks stay out of each other's way
- 2Air Force gets cargo back from Starfall
- 3Vulcan rocket to fly again on 13 November
- 4Spacewalk fits the station's seventh new solar panel
- 5Canada pays for launch pads years ahead
- 6Perseverance drills what may be one of Mars's oldest rocks
- 7Virgin Galactic's new spaceplane gets a name and a home
- 8Space Force signs up six firms to watch the sky in a crisis
- 9Start-up raises $20 million for satellites that build themselves
- 10UK firms team up to defend satellites
- 11Space investor opens an academy for start-ups
- 12NASA and US farm department share satellite data
- 13Comets probably did not bring life's chemicals
- 14A spinning black hole might split in two
- 15Korean firm to test new solar cells in orbit
- 16Report sizes up a giant sunshade in space
29 Oct · Space · In brief
Space · Thursday, 29 October 2026
Space, in brief
16 stories · 23 sources
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What is moving · 1 of 4
Armed forces hiring space firms
The US Space Force signed six companies to track satellites for it in a crisis.
What is moving · 2 of 4
Rival satellite networks
Russia's Rassvet network has about 26 working satellites against Starlink's roughly 10,000.
What is moving · 3 of 4
Old craft being replaced
The space station's first solar wings were built to last 15 years and are being topped up with new panels.
What is moving · 4 of 4
Money for new space firms
Rendezvous Robotics, a Colorado start-up, raised $20 million for self-joining satellite tiles.
16 stories
11 sources
Space, in brief
- 2Putin hails Elon Musk's 'genius' amid plans for Russian version of Starlink
- 5SpaceX's Starfall capsule delivers cargo for US Air Force in landmark 'point to point' space mission
- 6ULA's Vulcan rocket is set to return to flight on Friday the 13th
- 7United Launch Alliance announces mid-November return to flight for Vulcan rocket
- 8NASA nears end of space station solar array upgrade with Oct. 29 and Nov. 5 spacewalks
- 9ISS astronaut will conduct Canada's 1st spacewalk in 7 years on Oct. 29: Watch it live
- 12The last, best hope for space tourism just rolled onto a runway in Arizona
- 13The Pentagon's Commercial Space Reserve Goes Operational
- 14Exclusive: Rendezvous Robotics Raises $20M to Develop Self-Assembling Spacecraft
- 15Shield Space Launches UK Space Superiority Coalition
- 16Seraphim Space Launches Space Academy
Putin says Russia keeps in close contact with Musk's SpaceX so their satellite networks stay out of each other's way
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“a real genius”
Russia's President Vladimir Putin called Elon Musk 'a real genius' on Wednesday.
Vladimir Putin
Russia's president
Elon Musk
head of SpaceX
Putin said Russia is in close contact with Musk about satellites.
Musk runs SpaceX, the US rocket company that owns Starlink, a satellite internet service.
Putin spoke at a summit with African leaders in Moscow.
Who is involved
Volodymyr Zelensky
Ukraine's president; he said Starlink and Starshield were working again
Who is involved
Russia's embassy in South Africa
Russia's mission there; it called Rassvet Russia's Starlink alternative
Why it matters
“a certain level of discipline and order”
Putin said 'a certain level of discipline and order' in orbit matters to both sides.
Why it matters
Reuters Breakingviews says Ukraine's Starlink trouble shows the risk of relying on one company.
Why it matters
Watch whether SpaceX confirms the contact Putin described; so far it has said nothing.
What's really going on
Russia's own satellite internet, Rassvet, has about 26 working satellites, against roughly 10,000 for SpaceX's Starlink.
What's really going on
Putin says Russia keeps in close contact with SpaceX so the two networks stay out of each other's way.
Why it works on people
Praise for one famous man is easy to remember, while a count of 26 satellites against 10,000 is the part that explains why Russia needs the talks.
Who gains
SpaceX
Russia's president praised Musk and said it is very important to stay in close contact with SpaceX in orbit.
Who pays
Ukraine's military
It depends on a network one company controls, and a one-night limit in mid-October stopped its medium-range drone attacks.
Nobody knows yet
What Russia and SpaceX actually discuss, and who takes part.
Only Putin and Russia's embassy have described the contact, and SpaceX did not reply to the BBC.
Nobody knows yet
How many satellites each network really has.
Putin said Starlink has more than 5,000, the Guardian estimates about 10,000 working, and SpaceX says it has launched about 13,000. For Rassvet the Guardian estimates 26 working, and the BBC says a couple of dozen are in orbit.
The short version
That's the story in short.
The whole story has 6 more parts.
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The whole story, in 6 parts ↓
Part 1 of 6
He said the two sides talk so their satellites do not get in each other's way.
Part 1 of 6
Starlink
SpaceX's network
Rassvet
Russia's network
He was comparing Starlink with Rassvet, Russia's own satellite internet network.
Part 1 of 6
“Russia's Starlink alternative”
Russia's embassy in South Africa called Rassvet 'Russia's Starlink alternative'.
Part 2 of 6
Rassvet has about 26 working satellites, the Guardian reports.
Part 2 of 6
Starlink has about 10,000 working satellites, by the Guardian's estimate.
Part 2 of 6
SpaceX says it has launched about 13,000 Starlink satellites.
Part 2 of 6
“only taking the first steps”
Putin put Starlink at more than 5,000 and said Russia was 'only taking the first steps'.
Part 3 of 6
Russia's military
Ukraine
Russia is building Rassvet for its military to use against Ukraine, the Guardian reports.
Part 3 of 6
Starlink does not work in Russia.
Part 3 of 6
Russia's use of Starlink inside Ukraine was also cut off earlier this year.
Part 4 of 6
Starshield
Starlink's military version
In mid-October, Starshield, the military version of Starlink, was suddenly limited one night.
Part 4 of 6
That stopped Ukraine's medium-range drone attacks and weakened some of its drone defences.
Part 4 of 6
Musk later said he had closed a gap that let soldiers use civilian Starlink.
Part 4 of 6
Mid-October
Starshield limited
About 10 days later
Zelensky says it works again
About 10 days later, Ukraine's President Volodymyr Zelensky said both services worked again.
Part 5 of 6
Biden and Trump governments
SpaceX
The Biden and Trump governments both asked SpaceX to switch Starlink on or off in places.
Part 5 of 6
They asked it to block armed groups backed by Iran in Yemen and Lebanon.
Part 5 of 6
6 of 6
former senior US officials who spoke to Reuters
Six former senior US officials described the requests to Reuters.
Part 6 of 6
US
Russia
Putin spoke as the US and Russia appear to be growing closer, the BBC says.
Part 6 of 6
This month the US agreed to buy Russian diesel and waived some sanctions on Russia.
Part 6 of 6
SpaceX did not answer the BBC's request for comment.
4 sources
Putin says Russia keeps in close contact with Musk's SpaceX so their satellite networks stay out of each other's way
The full story
Putin says Russia keeps in close contact with Musk's SpaceX so their satellite networks stay out of each other's way
Russia's President Vladimir Putin called Elon Musk 'a real genius' on Wednesday.
He said the two sides talk so their satellites do not get in each other's way.
Rassvet has about 26 working satellites, the Guardian reports.
Russia is building Rassvet for its military to use against Ukraine, the Guardian reports.
In mid-October, Starshield, the military version of Starlink, was suddenly limited one night.
The Biden and Trump governments both asked SpaceX to switch Starlink on or off in places.
Putin spoke as the US and Russia appear to be growing closer, the BBC says.
Why it matters. Putin said 'a certain level of discipline and order' in orbit matters to both sides.
Air Force gets cargo back from Starfall
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The US Air Force got back cargo pods that flew to space in SpaceX's Starfall capsule.
Starfall launched on 20 October on Bandwagon-5, a SpaceX shared ride.
20 October
Starfall launches
26 October
pods recovered from the Pacific
It splashed down in the Pacific, and the Air Force confirmed the recovery on 26 October.
The pods held medical kit, food rations and survival gear.
Sensors inside measured heat, shaking and shocks through launch, re-entry and splashdown.
Starfall is a disc 3.1 metres wide that can bring back up to 1,000 kg.
Why it matters
The Air Force is studying rockets that could rush supplies to troops anywhere on Earth.
Why it matters
It hopes such flights could one day carry tens of tons each, far more than Starfall.
How it works
Why the military signs up its helpers long before a crisis
How it works
Checking a company and writing a contract takes months, but a crisis gives hours, so the slow part is done and paid for in calm times.
How it works · step 1 of 5
Checking a company and signing a contract takes months
How it works · step 2 of 5
A crisis gives hours, not months
How it works · step 3 of 5
So the buyer signs and pays a little in calm times
How it works · step 4 of 5
The company is checked, trusted and linked in already
How it works · step 5 of 5
When trouble comes, one call switches the help on
The twist
The slow part of getting help is the checking and the paperwork, not the help itself. So it is done, and paid for, before anyone needs it.
The picture
The Space Force spent three years of trials setting up its reserve of tracking firms. One of them says it can add tracking within hours of a call.
Seen the same day
Three years of trials and $1.37 million mean six firms are already checked and signed before any satellite breaks up.
Seen the same day
Canada pays NordSpace C$20 million now for ten years of pad access, and pays for each mission only when it orders one.
Seen the same day
The Air Force flew medical kit and rations in a company's capsule now, to learn how cargo survives long before it needs to rush supplies.
The catch
A deal signed in calm times only helps if the company can still do the job when the call comes, and money paid to firms that are never called can look like waste.
The whole
In a crisis, the people being helped see only the help arriving fast.
The whole
They never see the checks and contracts, signed months earlier by people they will never meet, that made it fast.
Who gains
SpaceX's Starfall business
The US Air Force flew its cargo pods in the capsule to test delivering supplies by rocket.
Good news
The US Air Force recovered its cargo pods from the Pacific after they flew to orbit and back in SpaceX's Starfall capsule. The pods carried medical kit, food rations and survival gear.
1 source
Air Force gets cargo back from Starfall
The full story
Air Force gets cargo back from Starfall
The US Air Force got back cargo pods that flew to space in SpaceX's Starfall capsule.
Why it matters. The Air Force is studying rockets that could rush supplies to troops anywhere on Earth.
Vulcan rocket to fly again on 13 November
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United Launch Alliance says its Vulcan rocket will fly again on 13 November.
Boeing
Lockheed Martin
ULA, owned half by Boeing and half by Lockheed Martin, launches for the US military.
Vulcan has been grounded for 9 months after a booster nozzle failed in February.
The nozzle broke on a strap-on booster made by Northrop Grumman.
The return flight uses a redesigned nozzle and carries 40 satellites for Amazon Leo.
Amazon Leo
Starlink
Amazon Leo is Amazon's satellite internet network, a possible rival to Starlink.
Amazon has booked 38 Vulcan launches to build it.
Why it matters
The Space Force wants data from these company flights before trusting Vulcan with military satellites again.
Why it matters
6 of 6
military missions moved to SpaceX
It moved six missions from Vulcan to SpaceX, and gave ULA six later ones instead.
Who gains
Amazon
Vulcan's return flight carries 40 of its Leo internet satellites, and it has 38 Vulcan launches booked.
Who pays
United Launch Alliance
Vulcan has been grounded for 9 months, and six of its military missions moved to SpaceX, with six later ones given back.
Nobody knows yet
What made Vulcan's booster nozzle fail in February.
ULA and Northrop Grumman have not named the root cause, only 'several potential contributors'.
Nobody knows yet
When the Space Force will let Vulcan carry military satellites again.
It wants data from Vulcan's company flights first, and Spaceflight Now's question about what work remains had no answer.
2 sources
Vulcan rocket to fly again on 13 November
The full story
Vulcan rocket to fly again on 13 November
United Launch Alliance says its Vulcan rocket will fly again on 13 November.
Why it matters. The Space Force wants data from these company flights before trusting Vulcan with military satellites again.
Spacewalk fits the station's seventh new solar panel
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Two astronauts were due to leave the space station at 12:00 UTC on Thursday.
Anil Menon
NASA
Joshua Kutryk
Canada's space agency
NASA's Anil Menon and Canada's Joshua Kutryk were fitting a new solar panel.
7 of 8
new panels, counting this one
It is the seventh of eight new roll-out panels being added since 2021.
The station's first eight solar wings were built to last 15 years.
2000 to 2009
old wings arrive
2021
new panels begin
They arrived between 2000 and 2009 and have lost power as they aged.
With all eight new panels, the station's power rises from 160 to about 215 kilowatts.
Kutryk will be the first Canadian to walk in space since 2019.
Why it matters
The extra power must last until the station is retired and brought down in 2030.
Why it matters
Thursday
seventh new panel
5 November
eighth and last panel
The eighth and last panel goes up on another spacewalk on 5 November.
1 source
Spacewalk fits the station's seventh new solar panel
The full story
Spacewalk fits the station's seventh new solar panel
Two astronauts were due to leave the space station at 12:00 UTC on Thursday.
Why it matters. The extra power must last until the station is retired and brought down in 2030.
Canada pays for launch pads years ahead
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Canada's defence department will pay NordSpace C$20 million for ten years of launch pad access.
NordSpace is a young launch company with a spaceport in Newfoundland and Labrador.
Each mission costs extra and is paid for only when Canada orders it.
Canada also promised Maritime Launch Services C$200 million over ten years.
That money commits Canada to a pad at Maritime's spaceport in Nova Scotia.
Why it matters
Canada cannot launch astronauts itself, so its missions depend on NASA.
Why it matters
The deals come as Canada uses Kutryk's flight to push new space plans.
How it works
Canada pays NordSpace C$20 million now for ten years of pad access, and pays for each mission only when it orders one.
The idea, in story 2: Why the military signs up its helpers long before a crisis →Who gains
NordSpace and Maritime Launch Services
Canada promised them C$20 million and C$200 million over ten years for launch pad access.
Who pays
Canada's taxpayers
They fund C$20 million and C$200 million launch pad deals, and each mission ordered costs extra.
1 source
Canada pays for launch pads years ahead
The full story
Canada pays for launch pads years ahead
Canada's defence department will pay NordSpace C$20 million for ten years of launch pad access.
Why it matters. Canada cannot launch astronauts itself, so its missions depend on NASA.
Perseverance drills what may be one of Mars's oldest rocks
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NASA's Perseverance rover drilled a rock sample on Mars on 24 October.
Over a year ago
its last sample
24 October
Singita drilled
It was the rover's first sample in more than a year.
Scientists say the sample, called Singita, may be among the oldest rocks on Mars's surface.
The rock was probably once about 1 km underground, until an impact threw it up.
It lies outside Jezero, a crater made by an impact about 3.9 billion years ago.
So Singita is likely at least that old, and maybe hundreds of millions of years older.
Why it matters
Its exact age can only be found if the sample is brought back to Earth.
Why it matters
0 of 2
more samples planned here
The rover will stay in the area and try for two more samples.
Nobody knows yet
How old the Singita rock really is.
Its age can only be measured if the sample comes back to Earth.
Good news
NASA's Perseverance rover drilled a new rock sample on Mars on 24 October, its first in more than a year. The rock, called Singita, may be among the oldest on the surface of Mars.
1 source
Perseverance drills what may be one of Mars's oldest rocks
The full story
Perseverance drills what may be one of Mars's oldest rocks
NASA's Perseverance rover drilled a rock sample on Mars on 24 October.
Why it matters. Its exact age can only be found if the sample is brought back to Earth.
Virgin Galactic's new spaceplane gets a name and a home
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Virgin Galactic named its new spaceplane Apeiron on Wednesday, after a public vote.
People in 83 countries voted on the name.
A carrier plane called Eve then flew it from Arizona to Spaceport America in New Mexico.
The flight took 1.5 hours.
Engineers there will finish its software, then run test flights.
Virgin now expects Apeiron's first paid flight early in the second quarter of 2027.
Before
February 2027
This week
the second quarter
That date slipped again this week, from February 2027.
About 675 people still hold tickets.
A seat that cost about $200,000 in 2014 now costs $850,000.
Why it matters
The US has gone 10 months without a space tourism flight.
Who pays
Virgin Galactic's ticket holders
About 675 people are still waiting for a seat, and paid flights have been stopped since June 2024.
Nobody knows yet
Whether Apeiron will carry paying passengers in 2027.
Virgin Galactic has moved the date again, from February 2027 to the second quarter, to finish its software.
4 sources
Virgin Galactic's new spaceplane gets a name and a home
The full story
Virgin Galactic's new spaceplane gets a name and a home
Virgin Galactic named its new spaceplane Apeiron on Wednesday, after a public vote.
Why it matters. The US has gone 10 months without a space tourism flight.
Space Force signs up six firms to watch the sky in a crisis
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The US Space Force signed its first deals to use companies' satellite-tracking networks in a crisis.
6 of 6
companies signed
Six firms signed, including Anduril, LeoLabs and Slingshot Aerospace.
EOS
Australia
NorthStar
Canada
Two are from outside the US: EOS of Australia and NorthStar of Canada.
The six deals are worth $1.37 million in total.
The plan took 3 years of trial runs to set up.
NorthStar says it can scale up its tracking within hours when called.
US airlines
US military
The plan is often compared to US airlines that agree to lend planes to the military.
Why it matters
The Space Force wants extra eyes ready if a satellite suddenly breaks up or moves.
Why it matters
Similar deals are planned for satellite links and for launches.
How it works
Three years of trials and $1.37 million mean six firms are already checked and signed before any satellite breaks up.
The idea, in story 2: Why the military signs up its helpers long before a crisis →What's really going on
Meanwhile the US military is signing up companies before it needs them: six tracking firms for a crisis, and SpaceX's Starfall capsule for rocket-delivered cargo.
Who gains
Anduril, LeoLabs, Slingshot and three other tracking firms
Space Force deals mark them as trusted enough to be called on in a future fight, and more firms are queuing to join.
Nobody knows yet
How often the Space Force will actually call on its six tracking firms.
The officer running the plan said they want to see how much it gets used over the next year.
2 sources
Space Force signs up six firms to watch the sky in a crisis
The full story
Space Force signs up six firms to watch the sky in a crisis
The US Space Force signed its first deals to use companies' satellite-tracking networks in a crisis.
Why it matters. The Space Force wants extra eyes ready if a satellite suddenly breaks up or moves.
Start-up raises $20 million for satellites that build themselves
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Rendezvous Robotics, a start-up in Colorado, raised $20 million on Wednesday.
It makes tiles about one metre wide that join together in space to form a satellite.
The tiles use electromagnetic forces to pull and lock themselves together.
Many new satellites need solar panels and antennas too big to fit inside a rocket.
Its next test sends 32 tiles to the space station, no earlier than December.
7 of 7
tiles for the 2028 test
In 2028 it plans to send 7 tiles into open space to build one satellite.
Why it matters
Tiles could also be swapped when a part breaks, instead of building a new satellite.
1 source
Start-up raises $20 million for satellites that build themselves
The full story
Start-up raises $20 million for satellites that build themselves
Rendezvous Robotics, a start-up in Colorado, raised $20 million on Wednesday.
Why it matters. Tiles could also be swapped when a part breaks, instead of building a new satellite.
UK firms team up to defend satellites
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Shield Space, a British start-up, launched a group of UK space companies on Wednesday.
The group wants to build a company-run force to defend British and NATO satellites.
Goonhilly
Magdrive
Optera
Members include Goonhilly, Magdrive and Optera.
Project SPEAR, its first plan, would join members' kit into one system against threats.
The UK government has not yet approved SPEAR.
Russian satellite
ICEYE satellite
Its founders point to a Russian satellite that flew close to an ICEYE satellite this month.
Why it matters
Shield's chief says the group wants to show the government the companies already exist.
Nobody knows yet
Whether the UK government will back Project SPEAR.
Shield Space built the plan for a UK space strategy goal, but the government has not approved it.
The full story
UK firms team up to defend satellites
Shield Space, a British start-up, launched a group of UK space companies on Wednesday.
Why it matters. Shield's chief says the group wants to show the government the companies already exist.
Space investor opens an academy for start-ups
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Seraphim Space, a British investor in space start-ups, opened the Seraphim Academy on Thursday.
Each start-up gets up to a year of help and $150,000 of investment.
2018 to 2025
the old programme
Now
the academy
It replaces Seraphim's start-up programme, which ran from 2018 to 2025.
It plans to take up to 15 companies a year for the next ten years.
Seraphim has backed more than 150 companies, and 11 grew to be worth over $1 billion.
Why it matters
Its director says more investors now look at space, so a first pitch must be stronger.
The full story
Space investor opens an academy for start-ups
Seraphim Space, a British investor in space start-ups, opened the Seraphim Academy on Thursday.
Why it matters. Its director says more investors now look at space, so a first pitch must be stronger.
NASA and US farm department share satellite data
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NASA
Department of Agriculture
NASA and the US Department of Agriculture signed a deal on Saturday to share satellite data.
The aim is better information for farmers about crops, droughts and disasters.
Jared Isaacman
NASA's head
Brooke Rollins
US farm secretary
NASA's head Jared Isaacman and farm secretary Brooke Rollins signed it in Alabama.
2 of 2
deals with US departments this month
It is NASA's second deal like this with another US department this month.
8 October
energy deal: nuclear power in space
Saturday
farm deal: satellite data
The first, with the US Department of Energy on 8 October, covers nuclear power in space.
Why it matters
Isaacman said joining NASA's data with the farm department's knowledge can improve what farmers are told.
1 source
NASA and US farm department share satellite data
The full story
NASA and US farm department share satellite data
NASA and the US Department of Agriculture signed a deal on Saturday to share satellite data.
Why it matters. Isaacman said joining NASA's data with the farm department's knowledge can improve what farmers are told.
Comets probably did not bring life's chemicals
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Comets probably did not bring Earth the chemicals life started from, a new study says.
Researchers at Cambridge University published it in the journal Scientific Reports.
Comets carry hydrogen cyanide, a chemical that can build some of life's parts.
2014
Rosetta finds glycine on a comet
Now
a study says comets did not deliver
In 2014 Europe's Rosetta probe found glycine, a building block of proteins, on a comet.
But a comet hits Earth so fast that the heat destroys many of those molecules.
The team's models found the bombardment was too short to deliver enough.
“highly unlikely”
Lead author Richard Anslow called the idea romantic but 'highly unlikely'.
Why it matters
The comet idea was never widely accepted, and this study makes it less likely.
1 source
Comets probably did not bring life's chemicals
The full story
Comets probably did not bring life's chemicals
Comets probably did not bring Earth the chemicals life started from, a new study says.
Why it matters. The comet idea was never widely accepted, and this study makes it less likely.
A spinning black hole might split in two
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Physicists say a black hole might split in two if it spins near top speed.
Scientists have long known that colliding black holes merge into a bigger one.
Splitting breaks a rule of heat physics, unless the black hole spins very fast.
The two pieces must also move apart instead of falling straight back together.
Long known
black holes merge
22 October
a study says one could split
The study, by a team including Francesco Sannino in Naples, appeared on 22 October.
Why it matters
Sannino says tiny black holes from the early universe are most likely to split.
Why it matters
Gamma-ray telescopes such as Fermi could look for signs of such splits.
Nobody knows yet
How likely a black hole is to split at all.
Sannino says no single probability can be given yet, because it depends on how gravity behaves beyond Einstein's theory.
1 source
A spinning black hole might split in two
The full story
A spinning black hole might split in two
Physicists say a black hole might split in two if it spins near top speed.
Why it matters. Sannino says tiny black holes from the early universe are most likely to split.
Korean firm to test new solar cells in orbit
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2 of 2
test satellites
Flexell Space, a Korean company, will test new solar cells on two small satellites.
Satoro, a company in Singapore, will build the satellites.
2027
first test satellite
2028
second test satellite
They are due to launch on SpaceX Falcon 9 rockets in 2027 and 2028.
The cells are thin films, aimed at being cheap, large and very light.
2 of 2
earlier flights on Korean rockets
Flexell has already flown cells twice on Korean rockets, in 2025 and October 2026.
Why it matters
The tests will check how the cells' power changes over time in orbit.
1 source
Korean firm to test new solar cells in orbit
The full story
Korean firm to test new solar cells in orbit
Flexell Space, a Korean company, will test new solar cells on two small satellites.
Why it matters. The tests will check how the cells' power changes over time in orbit.
Report sizes up a giant sunshade in space
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A new report says building a giant space sunshade could begin within 20 to 40 years.
The Planetary Sunshade Institute, a non-profit in Los Angeles, published it this month.
Researchers say a shade between Earth and the Sun could cool the planet by 1 C.
ARIA, a UK government research agency, paid for the report with a 400,000 pound grant.
It would need rockets that haul millions of tonnes into deep space.
“before the end of the century”
Cornell climate scientist Daniele Visioni doubts it could work before the end of the century.
Why it matters
Critics say such ideas distract from the need to cut greenhouse gases.
1 source
Report sizes up a giant sunshade in space
The full story
Report sizes up a giant sunshade in space
A new report says building a giant space sunshade could begin within 20 to 40 years.
Why it matters. Critics say such ideas distract from the need to cut greenhouse gases.
That's the whole Space day.
16 stories, 23 sources.