New 3I/ATLAS images from NASA and the ESA suggest the interstellar comet is active as it approaches Earth in December.

I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches Earth in December 2025.

The rare interstellar comet, also known as 3I/ATLAS, was first discovered in July and has been photographed several times.

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

NASA has predicted that a "once-in-a-life-time" star explosion -- or nova -- will be visible to the naked eye sometime this summer. A star is dead? Keep your eyes on the skies, stargazers: NASA has ...

NASA and astronomers worldwide are eagerly awaiting a rare celestial event this summer as a nova explosion in the constellation Corona Borealis is expected to be visible from Earth. This event, which ...

You won't need solar eclipse glasses for this one. An explosion in space so massive you'll be able to look up and see it in the night sky without a telescope could happen "any day now," a NASA expert ...

Cradled in the nose of a high-altitude research airplane, a new NASA sensor has taken to the skies to help geoscientists map rocks hosting lithium and other critical minerals on Earth’s surface some ...

Keep your eyes on the skies, stargazers: NASA has predicted that the much-anticipated “once-in-a-life-time” star explosion — or nova — will be visible to the naked eye sometime this summer, per a ...

An explosion in space so massive you'll be able to look up and see it in the night sky without a telescope could happen "any day now," a NASA expert said Wednesday. The stellar burst, called a nova, ...