By early December, 3I/ATLAS will move away from the Sun’s vicinity, and its glare, and will be visible again in the Northern ...

Comet 3I/ATLAS will be closest to the Sun on October 29 and will be observable through telescopes. Here is how you can track ...

The James Webb Telescope captures the beginning of planetary formation around the young star HOPS-315 for the first time.

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

What's special about Chiron's rings is that they're still forming; this marks the first time astronomers have ever seen a ...

There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

Somewhere at the edge of the solar system a new Earth-sized world might be lurking, dubbed Planet Y. Astronomers have long proposed that there might be hidden planets beyond the Kuiper belt, a region ...

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...

New observations suggest that the dwarf planet Makemake is surrounded by faintly glowing methane gas. Scientists are unsure if the gas is contained within a wispy atmosphere or being ejected into ...