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.

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

Scientists discovered WASP-121b, an exoplanet where metals rain from the sky. Located 858 light-years away, this 'ultra-hot ...

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.

As that description notes, the WorldView Legion spacecraft are capable of resolving features as small as 12 inches (30 ...

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 ...

Scientists work to define a “habitable zone,” which means that if it’s too close to a star, the water heats and evaporates, and too far, it freezes. Also, the atmospheric conditions need to be just ...

Rumors of a space nuke made geopolitical tensions extend into orbit. Amid an Escalating Arms Race in Space with Russia and ...