Something incredibly strange is unfolding in our cosmic neighborhood, a powerful and unexplained gravitational force is ...

If an antimatter meteor came into our solar system, we’d definitely know about it, says one reader, especially if it hit the ...

The object, estimated to be the size of a city block, is only the third known interstellar visitor to our solar system since ...

New strategies may soon allow scientists to test dark energy theories within our own solar system, linking cosmic-scale physics to local observation. Science advances through a cycle of proposing ...

A powerful geomagnetic solar storm is helping to unveil northern lights across the United States. Here's how auroras become ...

The rare comet 3I/Atlas has been spotted again after several weeks, this time missing its glowing tail — here’s what ...