Everyone who has ever lived on Earth has been well-aware of the moon, but it turns out Earth also has some frequent temporary companions. These "quasi-moons" are small asteroids that enter into a kind ...

This article originally published at Earth just got a new companion in space. It's sticking around for 60 years.. A one-way ...

"It is incredible that modern telescopic surveys have the ability to detect such small objects up to millions of kilometers away." Half a dozen fragments of the moon may briefly orbit Earth at any ...

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...

A coalition of scientists and historians are floating a long-shot plan to retrieve orbiting relics—raising questions about what is space junk or space treasure. Orbital space is full of retro ...