Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

Our Solar System is simple—one star, planets orbiting around it. But what happens in a system with multiple stars? Scientists ...

"With an orbital period of 570 days, it is a relatively cold gas giant planet," said Guðmundur Stefánsson of the University ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Our modern era of space observation and exploration deepens our connection with the universe—and with each other. When NASA ...

Worlds with liquid water could have formed just 200 million years after the big bang from the remains of the earliest ...

New James Webb Space Telescope observations of a star cluster called NGC 346 are shedding light on how, when and where planets formed in the early universe.

Staring up at the night sky, you might see thousands of stars sprinkled above the horizon. It feels as though you can see so ...

Uranus has the craziest tilt in your Solar System. Its tilt is about ninety-eight degrees. That means its north pole is ...

Thirty years after the discovery of the first exoplanet, we detected more than 7000 of them in our Galaxy. But there are ...

Certain extreme planets are called ultra-short period objects if they're very close to their stars and orbit them in mere hours, like K2-22b.

Sean Murray says new engine advances in Light No Fire's development creates "…this urge to share it with the [No Man's Sky] ...