These icy bodies contain organic molecules — and don’t fall into any known category of celestial object we’ve seen before.

A new model has been developed to simulate interstellar activity within our solar system and the nearby Alpha Centauri system ...

Researchers named it 'Oumuamua, Hawaiian for "scout". 'Oumuamua was later confirmed to be the first object from another star ...

How can astronomers pierce through the interstellar fog of the Milky Way—not to study distant objects, but to understand the ...

"We're trying to encounter an astronomical object that streaks through our solar system just once and we don’t want to miss ...

Oumuamua was later confirmed to be the first object from another star known to have visited our solar system. While these interstellar objects (ISOs) originate around a star, they end up as cosmic ...

A group of comets with unexplained movements presents a quandary D avide Farnocchia hunts down and tracks asteroids, and ...