The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Does our Solar System have 9 planets or only 8? Astronomers have gone back and forth on that a lot, with Pluto now being classified as a dwarf planet. However, out beyond Neptune there could be ...

Canadian astronomers have taken an extraordinary step in understanding how planets are born, using the James Webb Space ...

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may not be the full picture.

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

THE search for alien life across our Solar System and beyond has so far kicked up nothing intelligent – let alone microbial.

Each planet in our solar system is given a unique, humorous catchphrase that reflects its personality and role. From ...

New research shows that star activity can distort exoplanet measurements, affecting size, temperature, and atmosphere ...

February will be an awe-inspiring month for astronomy enthusiasts who will be able to the see the solar system's planets ...

An event called a "ring plane crossing" will occur between Saturn and Earth on March 23, 2025, when Saturn's rings will ...

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...