Science

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
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
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)
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)
NASA astronauts practice 'moonwalking' in the Arizona desert (photos)
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
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
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
China launches new mystery Shiyan satellite (video)
Everything we know about Dune: Prophecy — Release date, plot, cast, & more
SpaceX Falcon 9 rocket launching Starlink satellites on record 21st flight tonight
NASA, ESA join forces on life-hunting ExoMars rover
What time is Blue Origin's private NS-25 astronaut launch on May 19?