Asteroid 2024 YR4, which once appeared to be on a collision course with Earth, may hit the moon, which could create some ...

Although it won’t hit Earth, an asteroid once labeled a “city killer” is now back in the spotlight — this time, because it ...

Aliens are visiting our solar system. Not little green men, sadly, but natural alien objects—cosmic bodies such as comets and ...

Astronomers think small space rocks from beyond our solar system routinely strike Earth—but proving it isn’t easy ...

Learn about the plane-sized asteroid that will pass by Earth the week of July 28, 2025, and find out how astronauts can track ...

NASA currently leads the nation's planetary defense efforts, but some are calling for the Space Force to take control.

Heliostats that harness sunlight by day could help detect asteroids by night, offering the U.S. a scalable planetary defense ...

Earth is hit by asteroids all the time, but to avoid severe damages in the future NASA's Double Asteroid Redirection Test ...

John Sandusky, a scientist at Sandia National Laboratories, stands in the field of heliostats at the National Solar Thermal ...