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Bright green fireball lights up the skies over Portugal and Spain (photos)

On the evening of Saturday (May 18) a bright fireball lit up the skies over Portugal and Spain in stunning green and blue as it streaked through Earth...

Bright green fireball lights up the skies over Portugal and Spain (photos)

Why a giant 'cold spot' in the cosmic microwave background has long perplexed astronomers

Leftover light from the young universe has a major flaw, and we don't know how to fix it. It's the cold spot. It's just way too big and way too cold.

Why a giant 'cold spot' in the cosmic microwave background has long perplexed astronomers

NASA-funded pulsed plasma rocket concept aims to send astronauts to Mars in 2 months

NASA is studying innovative rocket system developed by Howe Industries that could reducing travel time to the Red Planet to just a few months.

NASA-funded pulsed plasma rocket concept aims to send astronauts to Mars in 2 months

NASA's PREFIRE mission is ready to unlock the mysteries of Earth's poles

A pair of cubesats will measure far-infrared radiation from Earth's poles to improve climate predictions.

NASA's PREFIRE mission is ready to unlock the mysteries of Earth's poles

This Week In Space podcast: Episode 111 —The Big Glass Wars

On Episode 111 of This Week In Space, Rod and Tariq talk with John Mulchaey, Director of the Carnegie Observatories, about the threat to completing tw...

This Week In Space podcast: Episode 111 —The Big Glass Wars

Why we're one step closer to understanding how Earth got its oceans (op-ed)

Earth may have gotten some of its water from 'dark comets,' and the forthcoming Vera C. Rubin Observatory could uncover key clues about these mysterio...

Why we're one step closer to understanding how Earth got its oceans (op-ed)

How to watch Blue Origin's NS-25 private space tourist mission online May 19

Blue Origin is scheduled to launch a crewed mission for the first time in nearly two years on Sunday (May 19). Here's how to watch the action live.

How to watch Blue Origin's NS-25 private space tourist mission online May 19

James Webb Space Telescope sees Orion Nebula in a stunning new light (images)

The Orion Nebula may be a familiar astronomical sight over Earth but that hasn't stopped the James Webb Space Telescope from seeing this star-forming ...

James Webb Space Telescope sees Orion Nebula in a stunning new light (images)

NASA astronauts practice 'moonwalking' in the Arizona desert (photos)

NASA astronauts headed to Arizona desert to rehearse moonwalks and test technology for the Artemis mission.

NASA astronauts practice 'moonwalking' in the Arizona desert (photos)

Who is the 'Doctor Who' villain Maestro? And what's their relationship with the Toymaker?

The new villain Maestro is out to destroy music in 'Doctor Who' episode 'The Devil's Chord' —and they're part of a new Pantheon of godly antagonists.

Who is the 'Doctor Who' villain Maestro? And what's their relationship with the Toymaker?

Boeing's 1st Starliner astronaut launch delayed again, to May 25

The first crewed mission of Boeing's new Starliner spacecraft has been pushed back by an additional four days, to May 25.

Boeing's 1st Starliner astronaut launch delayed again, to May 25

India's ambitious 2nd Mars mission to include a rover, helicopter, sky crane and a supersonic parachute

India's second mission to Mars will include a rover, helicopter, sky crane and a supersonic parachute, according to media reports.

India's ambitious 2nd Mars mission to include a rover, helicopter, sky crane and a supersonic parachute

Massive sunspot that brought widespread auroras to Earth now targets Mars

After quite the aurora experience across Earth this past weekend, beastly sunspot AR3664 could give Mars quite the same solar spectacular.

Massive sunspot that brought widespread auroras to Earth now targets Mars

Here we go again — new sunspot regions emerge, strong solar flare recorded

With the decrease of potential impacts from AR 3664, forecasters are monitoring new sunspot regions developing on the eastern half of the sun.

Here we go again — new sunspot regions emerge, strong solar flare recorded

US Space Force is launching more missions than ever. Lawmakers worry America's spaceports can't keep up

The House Armed Services Committee has raised concerns about whether Space Force's two main coastal ranges can keep up with rising launch demands.

US Space Force is launching more missions than ever. Lawmakers worry America's spaceports can't keep up

China launches new mystery Shiyan satellite (video)

China launched the latest in its secretive Shiyan satellite series on May 12 atop a Long March 4C rocket. China's space agency says the satellite will...

China launches new mystery Shiyan satellite (video)

Everything we know about Dune: Prophecy — Release date, plot, cast, & more

Their plans are measured in centuries — here's everything we know about Dune: Prophecy, the prequel series that will explore the past of the Bene Gess...

Everything we know about Dune: Prophecy — Release date, plot, cast, & more

SpaceX Falcon 9 rocket launching Starlink satellites on record 21st flight tonight

A SpaceX Falcon 9 rocket is set to launch for the 21st time tonight (May 17), setting a new reusability record for the company.

SpaceX Falcon 9 rocket launching Starlink satellites on record 21st flight tonight

NASA, ESA join forces on life-hunting ExoMars rover

NASA and ESA have signed an agreement to team up on the ExoMars rover mission, which aims to launch a life-hunting robot toward the Red Planet in 2028...

NASA, ESA join forces on life-hunting ExoMars rover

What time is Blue Origin's private NS-25 astronaut launch on May 19?

A Blue Origin rocket will launch its first private astronaut spaceflight since 2022 this weekend. Here's what time to watch.

What time is Blue Origin's private NS-25 astronaut launch on May 19?