National security officials say Russia is developing a nuclear, space-based weapon designed to take out virtually every ...

NASA has confirmed asteroid 1997 QK1 will make its closest approach on 20 August. The rock measures about 990 feet wide and is travelling at 21,994 miles per hour.

Last month, astronomers made an exciting discovery, observing an interstellar object — only the third of its kind ever ...

Watch footage of the Sun unleashing an X1.2-class solar flare. NASA's Solar Dynamics Observatory captured the fireworks in multiple wavelengths. Footage courtesy: NASA / SDO and the AIA, EVE, and HMI ...

Standing outside a Redmond office park, astronaut Warren "Woody" Hoburg holds a basketball to signify planet Earth.

Footage from NASA/ESA Hubble Space Telescope that celebrates 35 years in space. Images of Mars, planetary nebula NGC 2899, ...

NASA astronaut Zena Cardman recently captured footage of auroras over South Pacific Ocean, which she shared on social. The ...

There’s still time to catch the Perseid meteor shower, with darker skies offering better viewing than during its moonlit peak ...

A new-and-improved Starship megarocket is due to soar halfway across the world in a matter of days in SpaceX's first test of the vehicle since May.

Despite the setbacks, SpaceX is turning its attention to Starship’s milestone 10th flight. Musk in May predicted that “launch ...

HOUSTON—The largest radar reflector antenna ever assigned to a NASA mission has been successfully deployed, the space agency ...

The U.S. wants to build a nuclear reactor on the Moon by 2030, but the first challenge is finding an ideal spot.