Latest about Solar System
How many moons are in the solar system?
The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many more are waiting to be discovered?
Uranus has a new, hidden moon, James Webb Space Telescope reveals
Uranus' 29th moon was hidden inside the planet's dark inner rings, new observations from the James Webb Space Telescope reveal.
NASA's Hubble telescope reveals most detailed photos of interstellar visitor 3I/ATLAS to date
New images from the Hubble telescope show an extrasolar entity as it hurtles through our solar system at speeds of more than 130,000 mph (210,000 km/h).
Earth, Mars, Venus — and a long-lost planet — may have once 'waltzed' in perfect harmony around the sun
New simulations suggest that up to four of the solar system's rocky planets, including Earth and a long-lost world, once orbited in mathematical harmony around the infant sun.
The hunt for 'Planet Nine': Why there could still be something massive at the edge of the solar system
The debate about an undiscovered Planet X or Planet Nine has been going on for more than 100 years.
New dwarf planet 'Ammonite' could upend the existence of Planet Nine
A newly discovered dwarf planet called 'Ammonite' (2023 KQ14) has been spotted in the outer solar system, and it could be another nail in the coffin for the Planet Nine hypothesis.
When will the solar system die out?
After the sun goes out, what will happen to the solar system — and how long will it last?
'Interstellar visitor' 3I/ATLAS could be the oldest comet ever seen — and could grow a spectacular tail later this year
New simulations have narrowed down where the newly discovered interstellar comet 3I/ATLAS likely came from, revealing it could be more than 3 billion years older than the solar system.
