High in the Andes Mountains of northern Chile, something extraordinary is happening. Perched on the peak of Cerro Pachón at ...

NASA has discovered a mysterious interstellar comet entering our solar system. Learn what this strange visitor is and how scientists are tracking it now.

NASA’s ATLAS survey telescope found an interstellar comet, which could be the largest yet, in the direction of the ...

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

Astronomers confirm third interstellar object, 3I/Atlas, a fast-moving comet from deep space, giving rare insight into ...

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth ...

Dr. Caitlin Casey, an observational astronomer, has recently joined the physics department at UC Santa Barbara. She co-leads the C.O.S.M.O.S. collaboration — a project distinguished by its deep ...

The newly discovered interstellar visitor is just the third of its kind and fascinates astronomers who hope to learn from it ...

Solar systems mostly keep to themselves. What’s ours is ours and what’s not is not. Stars are simply too far from each ...

An ichthyosaur preserved beneath a Chilean glacier is helping scientists understand the extinct animals and the world around them as a supercontinent broke up.

ScientiFix, our weekly feature, offers you a summary of the top global science stories of the week, with links to their ...

Astronomers discovered 3I/ATLAS, a 10–20 km-wide interstellar comet racing into the solar system. It will reach perihelion in ...