Science

a large radio antenna with a crowd of people below

Aliens? It's, once again, never aliens.

Radio signals keep coming from deep space. Here's what they really are.

It'll be safe, engineers say. How a NASA nuclear rocket engine could unleash the solar system
Longer than California An enormous Martian cloud returns every spring. Scientists found out why.
The size of Florida Scientists just spotted unnerving melting beneath the 'Doomsday Glacier'

Related categories

Climate Change
Environment
Space

Latest

Earth's atmosphere as viewed from space. Since the first Earth Day, the planet’s CO2 levels have gone off the rails
SpaceX getting ready to launch Starship Get ready: SpaceX Starship will try to fly again soon
Starship exploding over ocean SpaceX Starship explodes during Herculean attempt to blast into space
Earth viewed from space Here's how out of whack Earth's climate is today
Webb telescope observing a galaxy collision This galactic collision made a blast brighter than 1 trillion suns
More on Latest

Videos

SpaceX's SLS rocket stands ready to launch.
How to watch the SpaceX Starship launch livestream
Rings of Uranus
The Webb Telescope finally shows us Uranus' glorious rings
An image of Wendy Ahonda in a life jacket juxtaposed with an aerial shot of a submerged area in South Sudan
Why is the world's newest country facing an existential threat?
Trappist Planets
What the Webb Telescope can tell us about the TRAPPIST planets
Four astronauts from the Artemis II crew are interviewed on The Late Show.
NASA's Artemis II moon mission astronauts describe re-entry to Stephen Colbert
More on Videos

Deals

Screenshot from The Roman Space Observer Game
NASA has released an retro arcade game about the Nancy Grace Roman Telescope
Make sure water is safe for your dog to play in with this quick and easy blue-green algae test
Make sure water is safe for your dog to play in with this quick and easy blue-green algae test
Pamper your pet with free same-day delivery at Petco when you spend over $35
Pamper your pet with free same-day delivery at Petco when you spend over $35
5 on-sale space heaters that can keep you warm and reduce your bill this season
5 on-sale space heaters that can keep you warm and reduce your bill this season
Grab this planetary desk accessory while it's on sale
Grab this planetary desk accessory while it's on sale
More on Deals

Features

At last, we can build a Space Elevator — sort of At last, we can build a Space Elevator — sort of
How a coin for carbon could save the planet How a coin for carbon could save the planet
Why it's impossible to forecast the weather too far into the future Why it's impossible to forecast the weather too far into the future
Welcome to Cloud City: The case for going to Venus, not Mars Welcome to Cloud City: The case for going to Venus, not Mars
Coronavirus and the indoor farming revolution Coronavirus and the indoor farming revolution
More in Science
The best eco-friendly air conditioners to keep you cool this summer
By Dylan Haas
What Earth was like last time CO2 levels were so crazily high
By Mark Kaufman
Google wants you to listen to coral reefs. It just might help restore them.
By Meera Navlakha
The first images of Earth are chilling
By Mark Kaufman
Speeding NASA spacecraft snaps photos of the most mysterious asteroids around
By Mark Kaufman
NASA released wild footage of Mars helicopter flying over an alien desert
By Mark Kaufman
Webb telescope flexes its muscle with this deep, deep view into space
By Mark Kaufman
Astronomers just brought a captivating black hole into focus
By Elisha Sauers
Biden's new emissions rules are meant to put you in an EV
By Cecily Mauran
Europe will launch a spacecraft to Jupiter. Here's how to watch.
By Elisha Sauers
Webb telescope captures the divine colors of a star's death
By Elisha Sauers
Amazing creature found 27,000 feet under the sea. Here's how it survives.
By Mark Kaufman
A speeding black hole is birthing baby stars across light years
By Elisha Sauers
How Webb just changed our concept of Uranus forever
By Elisha Sauers
Mars scientists spent 6 years making the most detailed image of the planet
By Elisha Sauers
NASA's Artemis 2 commander Reid Wiseman isn't perfect
By Elisha Sauers
Webb telescope just found the most ancient galaxies anyone's ever seen
By Mark Kaufman
NASA picked its moon astronauts. Here's what they'll do.
By Elisha Sauers
NASA just picked these astronauts to go back to the moon
By Elisha Sauers
Stunning Webb telescope photo shows actual bending of spacetime
By Mark Kaufman
There's a black hole pointed at Earth. You're not in danger.
By Mark Kaufman
Colossal space explosion is the most powerful humans have ever seen
By Mark Kaufman
Virgin Orbit will fire 85 percent of its employees
By Shannon Connellan
What is that giant seaweed blob hitting the Florida coast?
By Mark Stetson and Mike Pearl
Plastic pollution is clogging a river in Guatemala. Can we ever clean it?
By Teodosia Dobriyanova
The biggest stories of the day delivered to your inbox.
By signing up to the Mashable newsletter you agree to receive electronic communications from Mashable that may sometimes include advertisements or sponsored content.
Thanks for signing up. See you at your inbox!