The UN has activated planetary defense protocols for the first time to better determine the orbit, size, and threat posed by 2024 YR4, a rock discovered on December 27 that has a 1.6% chance of ...

On 27 December last year, astronomers using the ATLAS survey telescope in Chile discovered a small asteroid moving away from Earth. Follow up observations have revealed that the asteroid, 2024 YR4, is ...

A neutron star’s density is mind-boggling. These stars are composed almost entirely of neutrons packed together in a tiny radius. Just a teaspoonful of this material would weigh over a trillion ...

Japan's SKY Perfect JSAT will invest about $230 million to build a constellation of low-Earth orbit satellites using U.S. company Planet Labs' Pelican satellite, the company said on ...

Japan's SKY Perfect JSAT will invest about $230 million to build a constellation of low-Earth orbit satellites using U.S.

President Trump’s blueprints to build a space-based missile defense shield could help him push for reductions in atomic weapons arsenals across the great nuclear powers.

SpaceX is scheduled to launch its Maxar 3 mission, with two high-resolution commercial satellites on board, from the Kennedy ...

Some humans have already had a chance to visit space purely for fun. But will that be attainable for regular people anytime ...

With an assist from the NEID spectrograph, a team of astronomers have confirmed the existence of exoplanet Gaia-4b—one of the ...

SpaceX's Starship might have released harmful air pollutants into the atmosphere, as well as shards of hot metal.

NASA is tracking a truck-sized asteroid which is set to hurtle by Earth today at many times the velocity of a speeding bullet. The space rock—dubbed "2025 BV5"—is estimated by NASA's Jet Propulsion ...

On 27 December last year, astronomers using the ATLAS survey telescope in Chile discovered a small asteroid moving away from ...