With hundreds of satellites launched each year and tens of thousands more planned, scientists are increasingly concerned ...

NASA’s IXPE identifies the source of X-rays in the black hole jet of galaxy 3C 84, confirming inverse Compton scattering and ...

In the Bible, the Star of Bethlehem rises in the southern sky and then comes to a standstill, which is abnormal for a ...

The NG-18 Cygnus spacecraft departed the International Space Station and burned up in Earth's atmosphere the following day.

Spend 8 minutes with an image that has changed astronomy forever - the first-ever deep field view of galaxy cluster SMACS ...

Satellites have come a long way in the last couple years, and what you learned about them in school is likely far different ...

Among the more puzzling cosmic phenomena discovered over the past few decades are brief and very bright flashes of blue and ...

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will in a matter of days come as close to our planet ...

The interstellar comet 3I/ATLAS will make its closest approach to Earth on December 19, and will be visible with binoculars ...

The interstellar comet 3I/ATLAS will reach its closest point to our world Dec. 19. According to NASA, people will be able to ...

Astronomers have found evidence for a possible first-of-its-kind "superkilonova," or a kilonova spurred by a supernova. Such ...

This NASA/ESA Hubble Space Telescope image features a glittering blue dwarf galaxy called Markarian 178 (Mrk 178). The galaxy ...