In our thinking, our solar system had finally joined the larger universe, and diagrams like these showed us as just one system in a larger galactic neighborhood.

For a larger version of the diagram, click here. “It’s just awe-inspiring to see so many worlds in our solar system – including our own planet – in the same portrait," Raouafi said. "We often think of ...

Astronomers have spotted 3I/ATLAS, just the third interstellar object ever seen in our solar system. Bigger, faster, and possibly far older than ‘Oumuamua or Borisov, this icy traveler could help ...

Learn about and revise the Solar System, moons, comets and orbital motion with GCSE Bitesize Physics.

To receive the same amount of starlight as Mars receives from our sun, a planet orbiting an M-type red dwarf would have to be positioned much closer to its star than Mercury is to the sun.

Learn about and revise the Solar System, moons, comets and orbital motion with GCSE Bitesize Physics.

NASA's Voyager 1 launched 48 years ago in September 1977 on a decades-spanning journey to study the cosmos and search for ...

“Planet Nine” is considered unlikely to exist because it would be difficult for the solar system to collect enough material at such a distance from the Sun to form a super-Earth-sized planet.