What made the pulses puzzling to the astronomers was that they came in the form of both radio waves and X-rays. The discovery marks the first time that such objects, called long-period transients, ...

Astronomers have discovered a strange new object in our Milky Way. An international team reported Wednesday that this celestial object — perhaps a star, pair of stars or something else entirely — is ...

Astronomers from the International Center for Radio Astronomy Research (ICRAR), in collaboration with international teams, have made a startling discovery about a new type of cosmic phenomenon. The ...

Astronomers have obtained new images of the mysterious interstellar object 3I/ATLAS that reveal a new feature: the fastest comet ever observed has now grown a tail.

A mystery 12-mile wide object hurtling through space at 135,000mph could be a ‘possibly hostile’ alien craft that may be ‘dire for humanity’, boffins say. Scientists spotted 3I/Atlas on July 1 and ...

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 ...

The Hubble Space Telescope has captured the best picture yet of a high-speed comet visiting our solar system from another star. NASA and the European Space Agency released the latest photos Thursday.