In 1.2 million years, the orange dwarf Gleisa 710 will pass through the outer reaches of our solar system, becoming a brilliant point in the night sky while nudging the distant Oort Cloud. Though ...

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 ...

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...