Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, speeding through our celestial neighborhood.

On Christmas Eve, the Parker Solar Probe became the nearest spacecraft to the sun, flying within a few million miles of the solar surface.

The finding, published last week in The Astrophysical Journal, will help scientists more accurately understand stars and planets beyond our solar system formed and evolved across billions of years.

News New research says our universe only has a quinvigintillion years left, so make ‘em good ones Published: May. 16, 2025, 11:56 a.m.

A pair of planetary scientists simulated how our solar system might have evolved if it had a super-Earth orbiting where the asteroid belt is today. The results are enough to make you grateful that ...