Interstellar objects move too fast and arrive too rarely for astronomy to rely on a single instrument or a single kind of light. When comet 3I/ATLAS was first reported on July 1, 2025, observatories ...

Scientists are scrambling to explain why interstellar visitor 3I/ATLAS is carrying life's chemical building blocks at ...

Some planets do not orbit stars at all. These rogue worlds drift through interstellar space after being ejected from their ...

The interstellar comet 3I/ATLAS is unusually rich in alcohol — a chemical clue that could reveal how planets and icy bodies form around other stars.

I/ATLAS, the unusual interstellar comet that continues to fascinate astronomers, appears to be keeping an intoxicating cosmic ...

War Machine imagines a machine arriving from space. Real astronomy has detected interstellar visitors like ʻOumuamua, 2I/Borisov and 3I/ATLAS.

Analysis reveals what appears to be a channel of hot, low-density plasma stretching out from our solar system toward distant ...

Anson D'Aloisio is an associate professor of physics and astronomy at UC Riverside. research team including a UC Riverside astrophysicist and his former graduate student has received the 2025 ...

Over 4 billion years ago, as planets were coalescing around the newborn Sun, our star may have gone on an epic road trip across the Milky Way along with thousands of stellar "twins." And we may owe ...

Donald G. York, an astronomer with the University of Chicago who helped revolutionize the field as a co-founder of the Sloan Digital Sky Survey and made pioneering contributions to the study of the ...

Astronomers have found that both the core of our Milky Way and the earliest proto-galaxies in the universe share a surprising trait: They are unusually calm and quiet in terms of harsh radiation. This ...