Stoke is designing and building its rocket in Kent and test firing engine prototypes at Moses Lake in Central Washington.

Neptune is similar in size to Uranus but not exactly a twin. It is more massive but smaller. The model suggests a thinner ...

Preliminary research suggests asteroid 2024 PT5, which stuck around Earth for almost two months, has lunar origins ...

The space agency announced a $256.6 million contract with SpaceX to support the launch of the Dragonfly mission – a ...

Dramatic theories have been proposed to explain the mysterious interiors of Uranus and Neptune, the ice giants of our solar ...

Pumping an unimaginable amount of groundwater out of the earth is why Earth has tilted over two dozen degrees, a study found.

"The configuration that we end up with within the solar system is definitely not something that is indeed common," Chen told ...

The essential ingredient for life, water, appeared on both planets around 4.4 billion years ago, new research indicates.

Phobos and Deimos have long been thought to be captured asteroids due to their small size and irregular, asteroid-like shapes ...

Was Mars just like Earth billions of years ago? A new study is making a very compelling case that our Martian neighbor may ...

Diamond rain? Super-ionic water? These are just two proposals that planetary scientists have come up with for what lies ...