A peculiar interstellar visitor, 3I/ATLAS, is challenging comet theories with its sunward tail and unusual composition. While ...

The mysterious interstellar object 3I/Atlas will pass by Earth on October 29, and scientists explain what it means and whether it’s safe.

Jupiter would need 80 times its current mass to ignite as a star, with gravity that could fling Earth out of the solar system ...

Time is running short for scientists hoping to collect data from 3I/Atlas, a massive interstellar object hurtling away from the Sun.

What's special about Chiron's rings is that they're still forming; this marks the first time astronomers have ever seen a ...

Space weather isn’t referring to rain clouds that float through the galaxy. Instead, it’s caused by massive explosions of ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

Solar electricity is growing rapidly, but can it really dominate the global energy system? Here is what it will take for us ...