Astronomers have discovered that 3I/ATLAS is carrying methanol and other chemicals that were probably important in the origin ...

Later in December, the 3I/ATLAS interstellar comet will get as close to Earth as it ever will. Here's what to know.

A small, icy traveler from deep space has just threaded its way through the inner Solar System, offering a fleeting but profound reminder that our planetary neighborhood is not isolated. As ...

Eight planets, hundreds of moons, hundreds of thousands of asteroids, and billions of comets orbiting our Sun make up our ...

New measurements of radio galaxies reveal that the solar system is racing through the universe at over three times the speed ...

Analysis of the second confirmed interstellar comet to visit our solar system suggests that the alien body could be covered ...

Scientists studying samples from the Bennu asteroid located not too far from Earth continue to find clues as to how life ...

BRITS are clueless about our solar system – with four in 10 unable to identify the biggest planet and a quarter uncertain ...

Nearly 4.5 million years ago, two large, hot stars brushed tantalizingly close to Earth's sun. They left behind a trace in ...

About 4.5 million years ago, a great cosmic dog kicked past our Solar System – and its effects may still be seen today.

After decades of searching, astronomers may have finally stumbled upon the first moon known to exist beyond our solar ...

Learn more about two of the earliest reports of a total solar eclipse and corona, which were recorded in China, and solve ...