The inexorable march of human conflict into the cosmos frontier is no longer a subject of speculative fiction—it’s a stark ...

Dear EarthTalk: What is space debris, and can we reduce or eliminate it? – H.B., Troy, NY ...

Extreme solar activity or even a software glitch could put us just days away from a satellite collision in low-Earth orbit.

US officials say they hope the talks spur greater transparency from China in particular about satellite operations.

A massive star 2.5 million light-years away simply vanished — and astronomers now know why. Instead of exploding in a supernova, it quietly collapsed into a black hole, shedding its outer layers in a ...

To protect Allied astronauts and spacecraft, U.S. commanders need to stage a preemptive strike on Russia’s atomic-armed ASAT missile before it can be launched into orbit.

Since the 1990s, astronomers have found a handful of other dwarf planets in the belt, such as Eris and Sedna, along with ...

As next-generation telescopes map this outer frontier, astronomers are bracing for discoveries that could reveal hidden planets, strange structures, and clues to the solar system’s chaotic youth.

Their observations of a faint, cool M-dwarf star called LHS 1903 revealed a system with a rocky world at its outer edge. LHS ...

What is space debris, and can we reduce or eliminate it? H.B., Troy, NY. Space debris, also known as space junk, consists of ...

The UK insurance market could propel the British space industry to the fore. Will we fire up those boosters, or let others take the prize while we merely insure them?

A crew member of the Shenzhou-20 and -21 manned space flight mission enjoys the first-ever space barbecue that took place recently aboard China's orbiting Tiangong Space Station.