Pluto is no longer classified as a planet, it’s a dwarf planet, however, it still has five moons. Now astronomers say they ...

Astronomers are investigating a potential hidden planet, dubbed Planet Y, far beyond Neptune. Its gravitational pull is ...

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

Three billion years ago, a sun -like star reached the end of its life, throwing off its outer layers following its red giant ...

Our solar system now, once again, officially consists of only eight planets. Although largely debunked, speculation continued ...

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...

Related: Scientists Discover New Dwarf Planet in Solar System, Far Beyond Pluto It's actually incredibly difficult to see ...

In approximately 5 billion years, the sun will deplete its hydrogen fuel and collapse under its own gravity, becoming a white ...

Astronomers confirmed a new "quasi moon" known as 2025 PN7 will be around until at least 2083, giving plenty of time for ...