YR4 was detected by the Asteroid Terrestrial-impact Last Alert System, or ATLAS telescope, in Río Hurtado, Chile, two days ...

As scientists wait for the asteroid to reappear, its revised trajectory is now drawing attention to another possible target: the moon.

A large asteroid once considered the greatest known risk to Earth may now be on track for a direct hit — not on our planet, ...

With looming budget cuts at NASA, scientists are voicing their fears about the safety of ongoing missions. Echoing the tragic Challenger incident, a collective letter from NASA staff raises alarms ...