Astronomers have “cracked” a very cold case with the dissection of light from the coldest known brown dwarf. In fact, the brown dwarf, named WISE 0855, is billed as the most frigid discrete world yet ...

As was forewarned in the entirely scientifically accurate 1996 documentary "Independence Day," this July 2 astronomers have detected an unknown object headed for Earth(ish) from beyond our solar ...

Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical savvy and wide-ranging interest in the technological arts and sciences, Ars is ...

In a groundbreaking observation, astronomers have detected the first ever radio signal from the interstellar comet 3I/ATLAS, an object originating from outside our solar system. This unusual signal ...

In that vein, the comet was spotted by a system intended to find things that will hit Earth. That'll include a lot of eventual non-threatening objects, once their orbits are calculated. This one being ...