Add Yahoo as a preferred source to see more of our stories on Google. Astronomers have discovered 2025 PN7, a small quasi-moon that mirrors Earth’s orbit around the Sun. (CREDIT: ESA) Earth has just acquired a new best friend in space – a small ...

Finding Earth-like planets orbiting sun-like stars and identifying signs of life such as oxygen or water is a major goal in astronomy and a key interest for the public. Addressing this challenge speaks directly to one of humanity's most fundamental questions: Are we alone in the universe?

NASA warns that more than 15,000 asteroids capable of destroying cities remain undetected and that Earth has no defense against impact.

Launching in 2027, a new NASA space instrument with ties to the University of Colorado Boulder will begin orbiting Earth to track the amount of energy that’s leaving the planet daily.

A 1,300 pound Nasa satellite was set to crash into Earth on Tuesday, March 10. Here's what to know about the crash, and if you can watch it.

A NASA mission has spotted an Earth-size exoplanet orbiting a small star about 100 light-years away. The planet, named TOI 700 e, is likely rocky and 95% the size of our world. The celestial body is the fourth planet to be detected orbiting the small, cool ...

NASA announced its latest class of astronauts, which includes Anna Menon. Menon is the first NASA astronaut to have orbited Earth before being selected. She previously flew on the private Polaris Dawn mission, breaking a spaceflight record. She flew to ...

Scientists working for a NASA-funded project at the University of Arizona said that a possible "mini moon" is currently orbiting the Earth. Kacper Wierzchos of the Catalina Sky Survey tweeted this week that an object, 2020 CD3, has been captured by Earth's ...