Bothell, Wash.-based Portal Space Systems shows off the lab where its solar thermal propulsion system will be developed.

NASA’s James Webb Telescope captured direct images of gas giants in HR 8799, revealing their carbon dioxide-rich atmospheres.

There was a glimmer in the air tonight at Vandenberg Space Force Base in California, and it wasn't only because a SpaceX ...

The SPHEREx telescope will create the most colorful map of the cosmos, while the four satellites of the PUNCH mission track ...

The heliosphere, a cosmic bubble formed by the Sun, protects our solar system from interstellar threats and influences life's ...

Donaldjohanson, a main belt asteroid, could be a relic of a cosmic collision that took place 150 million years ago.

NASA has launched the SPHEREx telescope to uncover the ingredients for life in our galaxy, as well as the PUNCH mission to ...

SPHEREx hopes to solve some of the universe's biggest mysteries, while PUNCH will study the sun’s outer atmosphere, the corona. Here's what to know.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. It’s a two-for ...

Two space missions reached their conclusion: one with a splashdown, the other with a quiet lunar death. And thrilling new ...