Every week, Space.com delivers the latest discoveries, launches, and cosmic curiosities from across the universe. From ...

The space agency got a close look at the interstellar visitor over the past few months as it zipped by Mars and the sun ...

The object is the third interstellar visitor to our solar system ever confirmed. It will reach its closest point to Earth ...

With the government reopened, the space agency at last released pictures captured by a fleet of government spacecraft of an ...

"It's going to look different because it didn't come from our solar system and that's what makes it so magical." ...

NASA released fresh images on Wednesday of the interstellar object called 3I/ATLAS that astronomers have determined is a ...

As far as physical features, NASA says 3I/ATLAS has speed, color, and direction that are, “consistent with what we’d expect ...

The unusual comet—which is to pass Earth again in the coming weeks—is only the third known object to visit us from outside ...

NASA is unveiling close-up pictures of the interstellar comet that's making a quick one-and-done tour of our solar system.

The mystery of the alien comet probe sent to steal all our solar system’s secrets (possibly…) just intensified, as a Harvard ...

NASA's highly anticipated comet 3I/ATLAS images have been released, with a space agency official shooting down alien rumors ...

On Wednesday, Nov. 19, NASA will unveil more 3I/ATLAS images captured by the space agency's fleet of instruments both on the ...