
Alien life likely can't survive on exoplanets smaller than Mars, scientists say
For a world to maintain an atmosphere long enough for life to gain a foothold, it seems it needs to be at least as big as Mars.

By Anthony Wood Published
A story billions of miles and thousands of years in the making.

By Gemma Lavender Last updated
Buying Guide These are the best telescopes for stargazing, with top models from ZWO, Celestron and Unistellar.

By Harry Bennett Published
Deals This amazing pair of binoculars is almost 30% off their retail price on Amazon and we think they are a great pair for stargazing with their 50mm objective lenses and excellent image stabilization.

By Robert Z. Pearlman Published
A SpaceX Falcon 9 rocket carrying 24 Starlink satellites launched from Vandenberg Space Force Base in California on Tuesday (July 21), a day after aborting its first liftoff attempt.

By Josh Dinner Published
Expect some of the sharpest live views of Orion in space that we've ever seen.

By Hanneke Weitering Last updated
The launch of Virgil "Gus" Grissom on NASA's Mercury-Redstone 4 suborbital mission from Cape Canaveral on July 21, 1961.

By Mike Wall Published
SpaceX suffered its second last-second abort in a row this morning (July 20), this time during an attempted Falcon 9 launch of Starlink broadband satellites.

By Aparna Venkatesan Published
The Artemis II astronauts reminded us that they considered it the honor of a lifetime to go to the moon for us - and as us - while transmitting daily that they couldn’t wait to come home to us.

By Chelsea Gohd Published
The James Webb Space Telescope captured this image of a young galaxy cluster, MACS J0553.4-3342.

By Elizabeth Howell Published
While getting ready for a camping trip, an amateur astronomer spotted a possible crater. It appears to be a match, pending microscopic results.

By Chelsea Gohd Published
The James Webb Space Telescope captured this image of a young galaxy cluster, MACS J0553.4-3342.

The latest aurora forecast for tonight help you make sure you're in the right place at the right time to see the northern lights.

Follow Space.com's rocket launch blog for the latest on when the next rocket launch will be and how to follow it live.

Find out what you can see in the night sky for tonight, from planets and stars to dazzling meteor showers.

Witness live views of Earth from the International Space Station as it orbits the planet. Space streaming company Sen is broadcasting 24/7 from the ISS in beautiful 4K HD.

NASA astronaut Sally Ride became the first American woman in space aboard the space shuttle Challenger.

See what moon phase it is tonight and find out when you can see the rest of the moon phases for 2025.

Keep up with all the rocket launches, astronomical events and mission milestones for 2025 with our space calendar.

By Keith Cooper Published
New research suggests AI can be repeatedly fooled into mistaking non-life for life.

By Keith Cooper Published
A portable X-ray device has been used successfully in orbit for the first time, promising X-ray diagnosis of everything from broken bones to ripped spacesuits and damaged satellites.
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