NBC News' Gadi Schwartz reports on "3I/ATLAS," mysterious outer space object that is thought to be billions of years old, ...

Three symmetrical jets jutting out of interstellar object 3I/ATLAS are showing up in Hubble observations, puzzling astronomer ...

"The discovery of interstellar objects over the past decade offers new opportunities for humanity to send time capsules to ...

Astronomers continue to track the mysterious interstellar visitor Comet 3I/ATLAS as it speeds through the solar system, using ...

When something the size of Manhattan flies through our solar system from deep space, scientists usually watch with a clinical ...

When 3I/ATLAS swept past the sun in late October 2025, it became only the third confirmed visitor from interstellar space ...

Discover why astronomers believe the interstellar comet 3I/ATLAS could be 14 billion years old and what Harvard's Avi Loeb ...

New images of interstellar object 3I/ATLAS reveal geometric structures that defy comet models. Explore why this mysterious ...

In the velvet darkness of our cosmic backyard, a ghost has appeared—and it may be older than the stars we know. Discovered on ...

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's everything to know about it.

Space agencies around the globe have launched an unprecedented wave of planetary defense exercises, all centered on a mysterious interstellar visitor that refuses to behave like anything scientists ...

The year 2025 witnessed a series of mysterious phenomena that amazed the world and sparked widespread debate among scientists ...