Astronomers are tracking a newly spotted comet hailing from parts unknown, only the third time such an interstellar object ...

NASA has discovered a new interstellar comet that's currently located about 420 million miles away from Earth. The space ...

Astronomers are scrambling to gather data on a mysterious object that’s currently hurtling through the solar system.

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed.

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

The Milky Way's core will be visible this month and through August. Here's what Tennessee stargazers should know.

Using gravitational microlensing, scientists have discovered a rare, large planet at the edge of the Milky Way. The planet is ...

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

A new interstellar object, A11pl3Z, has been discovered in our solar system, marking the third such object to be observed. It was first discovered zipping near the sun this fall.

The comet should be visible by telescope through September, before it gets too close to the sun, and reappear in December on ...