The solar system is composed of the sun, eight major planets, five dwarf planets, over a hundred moons, and countless comets ...

Could a lonely planet wander aimlessly through the restless galaxy change the subtle dance of gravity within our solar system ...

Tiny crystals in Earth’s crust may have recorded meteorite and comet impacts as our planet traveled through the spiral arms ...

The Milky Way contains a modest amount of alien civilizations, a new paper proposes — and there's a reason we aren't seeing them.

Using supercomputer simulations, a team of researchers investigated a mysterious source of gamma light coming from the Milky ...

Late October offers a meteor shower generated by Haley's Comet plus a once in a lifetime comet that streaks by Earth every ...

Since the 1970s, Voyager 1 has been making groundbreaking discoveries. But its journey is far from over, and it's still ...

Interstellar comet 3I/ATLAS, a 7.5-billion-year-old visitor from the early galaxy, is offering scientists a rare glimpse into ...

What can the gamma ray light emitted by the Milky Way Galaxy teach scientists about the existence of dark matter? This is ...

An alien comet passing through our solar system made its closest approach to Mars recently, and two European robotic spacecraft orbiting the red planet turned to take a look.

NASA's Voyager 2 spacecraft captured dark streaks produced by geysers visible on the icy surface of Triton's south polar ...

Is interstellar object 3I/ATLAS an alien probe or a natural comet? Explore the compelling scientific evidence, from its tail ...