Learn how a possible ninth planet, the theoretical Planet X, could have acquired its wide orbit in the outer Solar System - a ...

Dubbed Teleios, the unusually symmetrical space object is puzzling astronomers with its near-perfect shape and mysterious ...

Languages: English. You can get in touch with Alyce by emailing a.collins@newsweek.com A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of ...

However, in 2023, astronomers discovered an unusual white dwarf that had a surface made of hydrogen on one side and helium on the other. Since then, a handful of other white dwarfs with differing ...