When a hunk of ice from another star system hurtles through our cosmic neighborhood, astronomers pay attention. When that ...

Planets orbiting such stars may have a better chance of retaining their atmospheres and developing conditions suitable for ...

Interstellar comet 3I/ATLAS is now on its way out of our solar system, never to return. The comet was only the third-ever ...

Aristotle believed the planets revolved around Earth and God could not have created other worlds. Today, scientists scour the ...

Our sun is a roiling mass of energy, with solar flares exploding on its surface, sending gas, plasma, and light that blasts ...