Planet hunters have grown used to strange worlds, but a handful of discoveries now point to something even more radical: ...

A California startup is building a 40-kilometer cannon that could launch satellites into orbit—without rockets. Backed by top ...

Ten days without a lifeboat in orbit that is the unprecedented situation facing the three astronauts aboard China’s Tiangong ...

NASA has discovered CWISE J1249, a mysterious red celestial object moving at over one million miles per hour through the ...

An unusual interstellar visitor known as 3I/ATLAS is accelerating debate within the scientific community, as researchers ...

European astronomers report the discovery of a second alien world in the TOI-1422 planetary system located some 500 light ...

"Hong Kong is a superconnector whose functions go beyond converging funds or brains to problem-solving capacity through a set ...

Avi Loeb identifies a 13th anomaly suggesting interstellar object 3I/ATLAS is targeting Jupiter. Explore the evidence for the ...

Longshot Space wants to build a 6-mile-long (10-km) space cannon to shoot several-ton objects into low Earth orbit (LEO). The ...

The gravitational wave is a prediction of the general theory of relativity that can be detected by measuring the relative ...

ESA's ExoMars orbiter has tracked interstellar comet 3I/ATLAS at unprecedented speed, refining its trajectory and offering ...

A two-decade-old NASA telescope is on an unstable orbit, and there is a 90 percent chance that it might come burning down in ...