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April 2021
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299 articles
- April 30
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- China's new space station will need 10 more launches to complete
- SpaceX Crew-1 astronauts will return to Earth Sunday after weather delay
- NASA extends Mars helicopter Ingenuity's high-flying mission on Red Planet
- Mars helicopter Ingenuity goes faster and farther than ever on 4th flight
- This week in our Space.com forums: Astro-ethics, the expanding universe and space art!
- 7 solar system worlds where the weather is crazy
- Fighting aliens with 'Space Force' and clovers at HI-SEAS — Commander's report: lunar day 6
- International Space Station to go on tour with VR exhibit 'The Infinite'
- Senate unanimously confirms Bill Nelson as the next NASA chief
- April 29
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- Stratolaunch flies world's largest airplane on 2nd test flight
- See the 'Super Pink Moon' of 2021 shine in these stunning photos
- Mars helicopter Ingenuity misses takeoff for 4th flight on Red Planet
- Blue Origin will start selling seats on its New Shepard spacecraft next week
- NASA's Mars helicopter Ingenuity will attempt its boldest flight yet today
- Artificial intelligence is learning how to dodge space junk in orbit
- 'Library of the Great Silence' invites E.T. to share long-term survival strategies
- Russian cosmonauts may not fly on SpaceX's Crew Dragon until 2022
- SpaceX rocket launches another 60 Starlink satellites, nails its 7th landing at sea
- China launches core module of new space station to orbit
- Vega rocket returns to flight with Europe's most advanced Earth observation satellite yet
- April 28
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- You can watch SpaceX launch new Starlink satellites on a used rocket tonight
- China is preparing to launch three astronauts to its new space station
- In photos: Apollo 11 astronaut Michael Collins' space missions
- Michael Collins, Apollo 11 astronaut who orbited moon, dies at 90
- Astronauts and the world mourn death of Apollo 11 astronaut Michael Collins
- Elon Musk reminds us all that 'a bunch of people will probably die' going to Mars
- SpaceX and OneWeb satellites didn't have a close call in space after all: report
- Russia wants to build its own space station to replace the ISS, state officials say
- China is set to launch first module of massive space station
- Blue Origin and Dynetics file protests to GAO after SpaceX wins NASA's moon lander contract
- Meteorite that landed in Botswana tracked to its birthplace in the asteroid belt
- 'Exotic compact objects' could soon break physics, new study suggests
- Mars helicopter Ingenuity spots Perseverance rover from the air (photo)
- Arianespace to launch Vega rocket on return-to-flight mission tonight. Here's how to watch.
- Mystery solved? Heat-trapping clouds may explain ancient Mars' rivers and lakes
- April 27
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- Lego unveils its biggest and best R2-D2 set in time for May the 4th
- Build Darth Vader's helmet, an Imperial Droid and more in these new Lego Star Wars sets
- NASA adds ULA's Vulcan Centaur rocket to launch lineup for future missions
- Soichi Noguchi: JAXA astronaut and SpaceX Crew Dragon mission specialist
- Victor Glover: NASA astronaut and SpaceX Crew Dragon pilot
- Mysterious heating of sun's corona powered by solar 'campfires,' study suggests
- NASA, SpaceX delay return to Earth for Crew-1 astronauts
- New warp drive research dashes faster than light travel dreams, but reveals stranger possibilities
- It's not how big your laser is, it's how you use it. Space law is an important part of the fight against space debris.
- Astronomers ask UN committee to protect night skies from megaconstellations
- After months in space, Crew-1 astronauts look forward to SpaceX trip back to Earth
- April 26
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- SpaceX fires up Starship SN15 prototype to prep for test flight
- Proof of new physics from the muon's magnetic moment? Maybe not, according to new theoretical calculation
- NASA chief nominee Bill Nelson talks Artemis program and more at Senate hearing
- Huge Delta IV Heavy rocket launches US spy satellite to orbit
- 'Alien: Isolation' is free this week on the Epic Games store
- Stifle your screams and watch Marvel Comics' chilling trailer for 'Alien #1'
- 'Aliens: Infiltrator' — Read an exclusive excerpt for Titan Books' chilling new sci-fi book for Alien Day
- Celebrate 'Alien' Day 2021 with a rare Xenomorph costume and other props up for auction
- The Vera C. Rubin Observatory: New view of the universe
- Will we ever know exactly how the universe ballooned into existence?
- The Super Pink Moon of 2021 rises tonight, but it won't look pink
- See amazing video of Mars helicopter Ingenuity's boundary-stretching 3rd flight
- April 25
- April 24
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- With 11 people on space station, astronauts get crafty with sleeping spots
- Meet 'Zhurong': China names Tianwen-1 Mars rover ahead of mid-May landing attempt
- Mars helicopter Ingenuity snaps epic photo of rover tracks, will attempt 3rd flight Sunday
- A piece of space junk zipped by SpaceX's Dragon capsule on its way to the space station
- In the light of the Super Pink Moon, look for the radiant Tycho crater
- SpaceX could land astronauts on the moon in 2024, Elon Musk says
- SpaceX's first reused Crew Dragon docks at space station with four Crew-2 astronauts
- April 23
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- Hubble Telescope captures stunning photo of rare fast-burning star for 31st birthday
- Tour SpaceX's Crew-2 Dragon capsule with 4 thrilled astronauts (and a penguin?)
- 'GuinGuin,' the flying penguin, revealed as SpaceX Crew-2 zero-g indicator
- SpaceX's Crew-2 launch lights up the predawn sky with a spectacular show (photos)
- Elon Musk says SpaceX's Crew-2 astronaut launch for NASA 'feels like a dream'
- Elon Musk, X Prize launch $100 million carbon-removal competition
- 'For All Mankind' sneak peek: Potential space shuttle battle looms in season 2 finale (video)
- China launches experimental satellite into polar orbit
- SpaceX launches 4 astronauts to space station, nails rocket landing
- April 22
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- The purge of the HI-SEAS habitat — Commander's report: lunar day 2
- How to see SpaceX's predawn Crew-2 launch from the US East Coast early Friday
- President Biden congratulates Mars helicopter Ingenuity team for historic 1st flight
- SpaceX will launch 4 astronauts to the space station before dawn Friday. Here's how to watch.
- On Earth Day, NASA reminds us how we're all connected
- Climate change has altered the Earth's tilt
- Newfound super-Earth has speedy orbit around red dwarf star
- Mars helicopter Ingenuity flies higher and longer on Red Planet in 2nd flight
- Netflix launches new Mars mission thriller 'Stowaway.' But will the air last?
- Exclusive: 'Secrets of the Whales' creator Brian Skerry on filming his stunning new docu-series for Nat Geo
- Celebrate Earth Day 2021 with this 'beau-tree-ful' Google Doodle
- Fly around SpaceX's Crew-2 rocket at the launch pad with this drone video
- Telescope lasers could give humanity an edge in war against space junk
- Emissions slowdown during COVID-19 not enough to improve climate trends, report finds
- So a helicopter flew on Mars for the first time. A space physicist explains why that's such a big deal
- NASA's Mars helicopter Ingenuity will attempt its 2nd flight Thursday
- April 21
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- NASA's Perseverance rover makes oxygen on Mars for 1st time
- Tiny newfound 'Unicorn' is closest known black hole to Earth
- The Lyrid meteor shower of 2021 peaks tonight! Here's how to see it.
- How long would it take to walk around the moon?
- One of Earth's nearest stars may be a dark matter factory
- Black holes, string theory and more: Q&A with physicist Brian Greene
- Sally Ride coin designs recommended for 2022 American Women quarter
- Michael Hopkins: NASA astronaut and SpaceX Crew Dragon commander
- SpaceX, NASA delay Crew-2 astronaut launch to Friday due to weather
- Watch NASA's Mars helicopter Ingenuity kick up dust on its 1st flight (video)
- NASA reaches out to commercial partners for new spacesuits and spacewalk tech
- Apollo 13 astronauts raise a toast to their recovery with new statue
- More Mars helicopters? NASA is already thinking about Ingenuity's successors
- SpaceX's Crew-2 astronauts will conduct more than 200 science experiments in space
- April 20
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- Boeing pushes second Starliner test flight to late summer
- NASA, SpaceX declare Crew-2 astronaut mission 'go' for Thursday launch
- US military picks 3 companies to test nuclear propulsion in cislunar space
- Strange crater suggests ancient Mars may have been frigid with occasional snowmelt
- Amazon's 1st Kuiper megaconstellation satellites will launch on a ULA Atlas V rocket
- China wants to launch its own Hubble-class telescope as part of space station
- Gamma-ray bursts don't get kicked around
- Small NASA rocket will study boundary of interstellar space
- April 19
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- NASA's Ingenuity helicopter aced an 'absolutely beautiful flight' on Mars. Here's the video.
- Arnold Schwarzenegger tells NASA to 'Get to the choppa!' for 1st Mars helicopter flight
- Behold! NASA's Mars helicopter Ingenuity snaps stunning photo from its 1st flight.
- NASA's Mars helicopter Ingenuity takes off on historic 1st powered flight on another world
- Scientists baked meteorites in an oven to investigate the atmospheres of alien planets
- Watch monster black holes dance in this mesmerizing NASA animation
- Can we reflect sunlight to fight climate change? Scientists eye aerosol shield for Earth.
- NASA's Mars helicopter Ingenuity is ready to make its first flight attempt Monday
- April 18
- April 17
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- NASA may attempt 1st Mars helicopter flight on Monday
- How to watch the Mars helicopter Ingenuity's first flight online
- SpaceX test-fires rocket ahead of Crew-2 astronaut launch for NASA
- NASA's Mars helicopter Ingenuity aces troublesome spin test
- SpaceX's Crew-2 mission to the International Space Station in photos
- As NASA troubleshoots its Mars helicopter, Perseverance rover keeps busy
- NASA's New Horizons Pluto spacecraft is still exploring, 50 AU from the sun
- SpaceX agrees to steer Starlink internet satellites clear of space station, NASA spacecraft
- Soyuz MS-17 crew returns to Earth after 185 days on space station
- April 16
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- Humans are both the weakest and the strongest link in the chain of space missions — Commander's report: lunar day 14
- NASA picks SpaceX's Starship to land Artemis astronauts on the moon
- In photos: The Expedition 64 mission to the International Space Station
- Crew-2 astronauts arrive in Florida ahead of SpaceX launch next week
- President Biden nominates former astronaut Pamela Melroy for NASA deputy administrator
- 'For All Mankind' actor lauds alternative-history show's family feel
- 5 twinkling galaxies help us uncover the mystery of the Milky Way's missing matter
- Meet Crew-2: The 4 space-bound astronauts launching aboard SpaceX's Crew Dragon
- This week in our Space.com forums: SpaceX prizes, first eclipses, and black holes!
- 5,200 tons of space dust falls on Earth each year, study finds
- How are asteroids, space weather and space debris detected before they hit Earth?
- Supernova deaths of white dwarf stars may explode like a nuclear bomb
- You can watch a NASA astronaut and 2 cosmonauts return to Earth in a Soyuz capsule tonight
- Five ways artificial intelligence can help space exploration
- NASA, SpaceX are 'go' to launch Crew-2 astronauts to space station on Earth Day
- April 15
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- These 3 spinning brown dwarfs are the fastest 'failed stars' ever seen
- NASA's New Horizons probe reaches rare distance, looks out to farthest Voyager
- Scientists paint best yet portrait of closest known fast radio burst
- 'For All Mankind' sneak peek: Family tensions erupt in penultimate season 2 episode 'Triage'
- SpaceX's next astronaut launch for NASA lifts off April 22. How to watch online.
- Russia is going back to the moon this year
- Galaxies, the cosmic cities of the universe, explained by astrophysicist
- St. Vincent's La Soufrière volcano eruption spotted from space (photos)
- Scientists get more great looks at the 1st black hole ever photographed
- April 14
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- Curious Kids: Could octopuses evolve until they take over the world and travel to space?
- 'Star Trek: Picard' Season 2 teaser trailer is teeming with Easter eggs
- US Mint to honor astronaut Sally Ride on 'American Women' quarter
- Exclusive: A little-known Jules Verne adventure novel scores a sci-fi comic book series with 'Lighthouse'
- Blue Origin aces 'astronaut rehearsal' New Shepard test flight
- Startup Phantom Space aims to launch 1st orbital mission in 2023
- NASA's OSIRIS-REx spacecraft begins its farewell tour of near-Earth asteroid Bennu
- Salute the enduring spirit of the 'Verse with this shiny new 'Firefly-Artbook'
- Earth nearly lost all its oxygen 2.3 billion years ago
- Japanese ispace lander to carry UAE moon rover to lunar surface in 2022
- Blue Origin to launch 'astronaut rehearsal' New Shepard test flight today. How to watch live.
- Did lightning help spark life on Earth?
- Weird 'blue' dunes speckle the surface of Mars in NASA photo
- SpaceX will launch Astrobotic lander to the moon with NASA's ice-sniffing VIPER rover
- Alien hunters should search for artifacts on the moon, study suggests
- Astronomers detect a bright-blue bridge of stars, and it's about to blow
- April 13
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- Lego launching NASA/ESA Ulysses solar probe as VIP reward set
- Embrace your Dark Side with this official $150K 'Star Wars Death Star' watch
- Fireball meteor burns up over South Florida
- Sunshine and 'moonwalks' heal the Selene III crew's dying optimism — Commander's report: lunar day 11
- The water on Mars didn't run dry all at once, study finds
- Universal Astronaut Insignia to unite world space explorers and travelers
- 'Space Hero' reality show competition signs space act agreement with NASA
- 'Dark sirens' could solve one of the greatest mysteries in cosmology
- NASA's Mars helicopter Ingenuity won't fly until next week at the earliest
- SpaceX's SN15 Starship prototype rolls out to launch pad
- April 12
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- A Northrop Grumman robot successfully docked to a satellite to extend its life
- 'Awaken' documentary captures natural beauty of Earth and our night sky
- Epic NASA video celebrates 40 years of the space shuttle
- Stepping into the 'Beyond': New book celebrates 60th anniversary of first man in space
- Take a deep listen to these celestial-inspired sounds from NASA (Videos)
- Yuri Gagarin, First Man in Space (Photo Gallery)
- From the deepest seas to Perseverance's home on Mars, curiosity drives astronaut Kathy Sullivan
- UAE names two new astronauts, including first woman candidate
- A small, car-sized asteroid just gave Earth a close shave
- Celestron Inspire 80AZ telescope: Full review
- From Yuri Gagarin's launch to today, human spaceflight has always been political
- Casio's new digital watch marks 40 years since first space shuttle launch
- In photos: NASA's first space shuttle flight, STS-1 on Columbia
- Yuri Gagarin: How the first man in space sparked a conspiracy theory
- 60 years of human spaceflight brings in tech changes and emphasis on diversity
- Why is NASA sending a woman to the moon?
- April 11
- April 10
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- NASA delays Mars helicopter Ingenuity's 1st flight to April 14
- The Mars helicopter Ingenuity is about to make history in the skies of another world
- How NASA's Mars helicopter Ingenuity can fly on the Red Planet
- Make your own Mars helicopter Ingenuity out of paper with this NASA guide!
- Exclusive: Salute 'Star Wars Day' with this mouth-watering 'Star Wars: Galactic Baking' cookbook
- Yuri's Night 2021: Celebrate 60 years of human spaceflight tonight with Bill Nye, astronauts, OK Go and more
- April 9
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- NASA's Mars Helicopter Ingenuity is 'go' for historic 1st flight
- NASA to land 1st person of color on the moon with Artemis program
- Biden proposes $24.7 billion NASA budget in 2022 to support moon exploration and more
- 'For All Mankind' sneak peek: Astronaut climbs to edge of space in a T-38 in 'And Here's to You'
- Watch NASA's Mars helicopter Ingenuity test its blades! (video)
- Win some SpaceX swag in our latest giveaway!
- Celestron FirstScope 76: Full review
- Soyuz MS-18 crew launches to space station 60 years after first human spaceflight
- 20 years of otherworldly thought experiments: A Q&A with artist Jonathon Keats
- Hubble telescope finds rare double quasars in ancient galactic collisions
- Director Neil Burger's 'Voyagers' launches a colony ship to the stars
- Helicopter on Mars! NASA webcast teaches kids about Ingenuity's upcoming 1st flight
- April 8
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- You can watch a Soyuz rocket launch a US-Russian crew to the International Space Station early Friday
- Celestron Astro Fi 130 telescope: Full review
- A tiny, wobbling muon just shook particle physics to its core
- The Great North American Solar Eclipse of 2024 is just three years away
- Mars helicopter Ingenuity unlocks its rotor blades to prepare for 1st flight on Red Planet
- Teach your kids about NASA's Mars helicopter Ingenuity with a free webcast today
- Tiny Astroscale satellite will test space junk cleanup tech with magnets
- Space-based solar power getting key test aboard US military's mysterious X-37B space plane
- April 7
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- 'World of Tanks' honors the 60th anniversary of Yuri Gagarin's historic spaceflight with 'To the Stars!' event
- Philip Chapman, first Australian-born NASA astronaut, dies at 86
- These selfies of NASA's Mars helicopter with the Perseverance rover are just amazing
- Air Force's new hypersonic missile fails to launch during key test flight
- Spooky 'spiders on Mars' finally explained after two decades
- Alien raindrops are similar to those on Earth
- SpaceX launches another 60 Starlink satellites into orbit and sticks rocket landing
- NASA, SpaceX target Oct. 23 for Crew-3 astronaut launch
- SpaceX will launch new Starlink satellites on a veteran rocket today. Here's how how to watch.
- 'Resident Alien' renewed for a second season on Syfy
- Commander's cover: An envelope's flight through space, time and eBay
- No, the Perseverance rover didn't spot a rainbow on Mars
- Hubble telescope reveals a gorgeous, detailed new view of the Veil Nebula
- Selene III commander's report: When all hope drains away from the crew on the 'moon' — Day 8
- Celestron PowerSeeker 80AZS telescope: Full review
- April 6
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- NASA just dropped an Orion space capsule into a pool for science
- First 'Space Jam: A New Legacy' trailer recruits LeBron James and Bugs Bunny to battle the Goon Squad
- Lava tubes in Hawaii could be a dress rehearsal for Mars colonies
- These weird lumps of 'inflatons' could be the very first structures in the universe
- Mars Helicopter Ingenuity snaps 1st color photo on Red Planet
- Dark matter 'annihilation' may be causing the Milky Way's center to glow
- Celestron NexStar 6SE telescope: Full review
- April 5
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- First look at Captain Janeway in 'Star Trek: Prodigy'
- 'Star Trek: Lower Decks' Season 2 teaser trailer promises more mayhem in space
- 'Star Trek: Discovery' teaser trailer for Season 4 sounds like every other season
- NASA's Mars helicopter Ingenuity has survived its first Martian night alone as 1st test flight looms
- SpaceX identifies cause of Starship SN11 prototype's crash
- 'Star Trek: Picard' Season 2 teaser trailer reveals the return of a familiar 'Next Generation' foe
- New Space Explorers Club offers monthly access to astronauts
- See the 1st trailer for 'Stowaway,' Netflix's newest sci-fi film
- Dark matter could be made of black holes from the beginning of time
- The Psyche mission: A visit to a metal asteroid
- 'Star Trek: Lower Decks' Season 1 warps onto Blu-ray May 18
- Astronauts move SpaceX capsule to new docking port for 1st time ahead of space station crew arrivals
- NASA's InSight lander detects two medium marsquakes on the Red Planet
- Antimatter cooled to near absolute zero by laser beam
- NASA selects 9 scientists to join 2022 Korea Pathfinder Lunar Orbiter mission
- Astronomers see a ghostly 'radio jellyfish' rise from the dead in the southern sky
- April 4
- April 3
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- Debris from SpaceX rocket launch falls on farm in central Washington
- The dingo fence from space: Satellite images show how these top predators alter the desert
- Fiery 'airburst' of superheated gas slammed into Antarctica 430,000 years ago
- What do birds have to do with stargazing? A lot, it turns out.
- April 2
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- Solar geoengineering is worth studying but not a substitute for cutting emissions, study finds
- Discovery of two new giant radio galaxies offers fresh insights into the universe
- What's up with this weird green rock on Mars? Perseverance rover is trying to find out.
- New reports detail ongoing space threats, and Russia is raising concerns
- NASA estimates COVID-19 pandemic will cost the agency $3 billion, plus delays
- Mangroves from space: 30 years of satellite images are helping us understand how climate change threatens these valuable forests
- NASA's Juno spacecraft detects strange new auroras on Jupiter
- Why is there water on Earth?
- Why we need to get better at predicting space weather
- China's Tianwen-1 spacecraft captures stunning crescent Mars photos
- Elon Musk says he's going to put Dogecoin on 'the literal moon'
- April 1
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- NASA's Mars Curiosity rover snaps scenic selfie at 'Mont Mercou' (photo)
- Lego designer reveals hidden details in new Space Shuttle Discovery set
- Lego's NASA Space Shuttle Discovery set with Hubble is a space geek's dream (review)
- NASA delays Ingenuity Mars helicopter's first flight to April 11
- 'For All Mankind' sneak peek: Space physics fixes a vending machine in 'Don't Be Cruel'
- With 1st space station launch this spring, Chinese astronauts are training for flight
- China launches a second Gaofen-12 Earth observation satellite
- 'Star Trek' First Contact Day promises plenty of Trek news and nostalgia
- Hidden boundaries of lost continent 'Zealandia' revealed in incredible detail
- Astronomers find the 'safest place' to live in the Milky Way
- Enceladus may have ocean currents like we see around Antarctica
