The odd nature of 3I/ATLAS led astrophysicist Avi Loeb to apply a thought experiment to it, highlighting everything that ...

An interstellar object called 3I/ATLAS is passing through our solar system this year, NASA announced yesterday. Today at 6 p.m. ET, you can see it for yourself, thanks to a livestream from the ...

There’s a giant ball of ice barreling through the solar system right now, and it’s bigger than any we’ve seen before. It poses no threat to Earth, but this comet, called C/2014 UN271 ...

The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this week, and confirmed it was a comet from another star system.

More than 1 million "interstellar objects" the size of the Statue of Liberty could be drifting unseen in the outer solar system right now, new simulations suggest. The hefty cosmic interlopers ...

There was so much dynamic activity in our solar system in the beginning. Our solar system right now looks nothing like what it originally looked like," said Pitts.

This Collection welcomes original research on our solar system, including planetary science studies, solar physics, and advances in astronomy instrumentation.

The most distant Solar System object, Farout, has lost its crown after just two years. As Inverse reports, astronomers have confirmed that the planetoid Farfarout is now the farthest known Solar ...

Only some 90 light years away lurks a graveyard of destroyed planets orbitting a white dwarf. And it may be one of the oldest solar systems in the universe.

An artist's illustration imagines the newly discovered Farfarout (lower right), now confirmed to be the most distant object ever observed in our solar system. Farfarout is 132 times the distance ...