When people think about space threats, they usually imagine asteroid impacts, solar storms, or distant supernova explosions. But some scientists warn that the most serious danger may be something far ...

How can radio astronomers successfully identify extraterrestrial radio signals while discerning them from Earth-based radio signals? This is what a recent study published in The Astronomical Journal ...

Scientists have proposed building a lunar quarantine facility to examine samples returned from Mars and other celestial bodies before they ever reach Earth, arguing that the Moon could serve as a ...