Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial rocks reveals. When you purchase through links on our site, we may earn an ...

"The most convincing scenario is that most of the building blocks of Earth and Theia originated in the inner solar system. Earth and Theia are likely to have been neighbors." When you purchase through ...

The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since ...

Earth is the only life-supporting planet in our Solar System. Until now. Today, we’re bringing Kepler 22-b into our planetary ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

Earth’s orbit around the Sun defines everything we take for granted. Day and night, the seasons, and the steady presence of ...

Launching early in the year, three Americans and one Canadian will zip past the moon, do a U-turn behind it, then hustle straight back to Earth to close out their 10-day mission. No stopping for a ...

New research reveals the Moon may have been silently collecting Earth’s atmosphere for billions of years. Scientists now ...

Could the icy moons of our solar system hold life beyond our planet? Keith Cooper looks at how planetary scientists plan to find out ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A total lunar eclipse — also known as a “Blood Moon” — is a ...

Astronomers recently detected a stray quasi-moon in our planet’s orbit, but it's hardly the first stowaway to hang out around Earth. Unlike the Earth's moon, quasi-moons are not gravitationally bound ...

CC0 Usage Conditions ApplyClick for more information. Where do we come from? How did our planet form? How do we know about the history of our solar system? You can explore these universal questions in ...