Astronomers have discovered asteroid 2025 SC79, a skyscraper-sized space rock orbiting the sun in just 128 days. the ...

A scientist spotted an asteroid hiding in the sun's glare that orbits the sun in just 128 days, making it the second fastest ...

Material around Chiron, a small icy world in the far reaches of the solar system, may be taking shape into a ring system of ...

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

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

Harvard researcher Avi Loeb says comet 3I/ATLAS weighs 33 billion tons and spans 3.1 miles, making it far larger than ...

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

From lava worlds to gas giants, NASA says the variety of these worlds is staggering—and that signs of a further 8,000 distant ...