Comet 3I/ATLAS is already racing back into deep space, but its surprise resurgence in December 2025 has turned a fading curiosity into a case that planetary scientists will be arguing over for years.

Astronomers have spotted a heart in the cosmos — not Cupid's doing, but a dying star shedding its layers — just in time for Valentine's Day.

The international astronomical community is celebrating. The mega-project by AES Andes, a subsidiary of the U.S.-based AES ...

"We were very surprised to see this structure," said astrophysicist Theo Khouri of Sweden’s Chalmers University of Technology.

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