Scientists have traced interstellar comet 3I/ATLAS to an extremely cold, isolated region of the galaxy, possibly dating back 10–12 billion years. Its unusually high deuterium content suggests it ...

CAPE CANAVERAL, Fla. (AP) — The comet that rambled past us from another star last year likely originated in a cold, isolated corner of the galaxy that had yet to gel into its own solar system, ...

3I/ATLAS is now sailing away from Earth and our solar system itself, but astronomers have already learned a wealth of information. The fastest comet ever recorded is covered in ice volcanoes, and ...

The interplanetary comet 3I/ATLAS is remarkably rich in a specific type of water that contains deuterium, meaning it came ...

Using the Atacama Large Millimeter/submillimeter Array (ALMA), scientists have discovered that the interstellar invader comet ...

New observations of the interstellar comet 3I/ATLAS include the first measurement of the abundance of deuterated water ...

Light travels at a whopping 299,792 kilometers per second. It zips from Earth to the Moon in a heartbeat, clears the orbit of ...

An unexpected guest has made its way into our Solar System. It’s an interstellar object, an ISO. And it’s tumbling through ...

A comet named 3I/ATLAS was first discovered on July 1, 2025, and is located about 420 million miles away from Earth, ...

An interstellar comet changed its chemistry after passing the Sun, revealing hidden layers and a surprising mix of carbon ...

A scientific instrument on the Voyager 1 has been shut off to conserve power as the probe continues its interstellar exploration.