This week, just days before Christmas, the interstellar comet 3I/ATLAS will make its closest approach to planet Earth – so close, that anyone with a "powerful amateur" telescope might see it. Here's ...

Interstellar comets are the original cosmic explorers, and by studying their metallic whispers, we are learning the secrets ...

Scientists found new evidence (or lack thereof) disproving the conspiracy theory that interstellar comet 3I/ATLAS is alien ...

A mysterious interstellar visitor traipsing through our solar system known as 3I/ATLAS has captivated the public for months, and it's easy to see why. But as 3I/ATLAS' renown (and infamy) only ...

New infrared observations reveal that the rare interstellar visitor known as comet 3I/ATLAS has dramatically brightened ...

A pair of new studies suggest that key steps toward life’s chemistry may begin long before planets exist. Experiments simulating interstellar space show that simple amino acids can link into peptides, ...

Astronomers are tracking a visitor called 3I/ATLAS, the third confirmed interstellar object ever observed. The two previous instances were 1I/’Oumuamua in 2017 and 2I/Borisov in 2019. 3I/ATLAS is ...

The latest interstellar visitor to sweep through our solar system has already delivered a surprise: in one key image, a scientist noticed a puzzling brightening that does not quite match what ...

A 13-atom molecule containing sulfur has been discovered in interstellar space for the first time, providing insight into the origins of the chemistry of life.