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

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously ...

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

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

A recent study by Princeton University astronomers suggests the possible existence of a previously undetected planet in our ...

Viewed from orbit, Jackass Flats — situated in southern Nevada about 65 miles northwest of Las Vegas — could easily be ...

Astronomers have made an unexpected and groundbreaking discovery in our solar system—a ring system forming around Chiron, a ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

While Saturn 's magnificent rings, spanning 175,000 miles (280,000 kilometres), are a familiar celestial marvel, scientists ...

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

The European Space Agency also hoped to observe the interstellar object during its close approach to Mars using two ...

Learn when and where to see Comet Lemmon and Comet SWAN this October as they light up the night sky in a rare double comet ...