A new study challenges the dream of water-rich “Hycean” planets like K2-18b, suggesting that most sub-Neptunes lose their water deep into their interiors during formation. Instead of vast oceans, ...

Testing is underway for the next SpaceX Starship launch in Boca Chica, Texas, signaling that we’re one step closer to seeing a Starship lift off from the Space Coast.

This invisible boundary is known as the heliosphere. It's the endpoint beyond which our Sun does not have any reach or power.

Astronomers are pulling back the curtain on two of the universe’s biggest mysteries: how planets are born and how invisible ...

The planets are coming in loud and clear today. Cosmic herald Mercury in personable Libra will be reaching to form a pair of ...

"The complexity of the exo-Neptunian landscape provides offers a unique window onto the processes involved in the formation ...

Methane gas may signal an atmosphere or geological activity on a distant dwarf planet located at the outer edge of the Solar System. A research team led by the Southwest Research Institute has ...

Researchers working in Canada have trialed technology to thicken Arctic sea ice. They pump seawater out from under the ice, ...

Kenna Hughes-Castleberry is the Content Manager at Space.com. Formerly, she was the Science Communicator at JILA, a physics ...

On Sept. 18, 1977, NASA's Voyager 1 spacecraft took a photo of Earth and the moon. It was the first time both the Earth and ...

There is much less water on the surfaces of distant planets outside our solar system than previously thought. These ...

TRAPPIST-1, a planetary system 40 light years from Earth, could host a planet with an atmosphere and liquid water, but astronomers can’t be certain just yet.