A massive coronal mass ejection (CME) is hurtling from the Sun's far side, setting a collision course for the unusual ...

Anomalous” heat flow, which at first appears to violate the second law of thermodynamics, gives physicists a way to detect quantum entanglement without destroying it.

Tailcatcher predicts that Hera and Europa Clipper will pass close to 3I/ATLAS' tail from October to November 2025.

A new analysis of our solar system’s interstellar interloper, 3I/ATLAS, reveals that it’s spewing huge amounts of water — and astronomers can’t immediately explain why. The object, which is widely ...

"It tells us that the ingredients for life's chemistry are not unique to our own." A rocky visitor from beyond our solar system is leaking water like a "fire hose running at full blast," a new study ...

An intriguing interstellar object known as 3I/ATLAS is, as of now, on the opposite side of the sun from Earth – making it impossible to observe from the ground. As 3I/ATLAS warps and grows the closer ...

For millions of years, a frozen traveler drifted in silence through the stars, carrying secrets from another world. This summer, that interstellar visitor—now known as 3I/ATLAS—passed through our ...

The mystery behind the famous 1977 “Wow!” signal has gained renewed attention after a Harvard astronomer proposed that the newly observed interstellar object 3I/ATLAS may be linked to the event. The ...

Analyses of its emissions using NASA’s Neil Gehrels Swift Observatory indicate that the interstellar comet probably has a very different structure than comets in the solar system. Hydroxyl compounds ...

A rare interstellar comet — only the third ever confirmed to enter our solar system — was photographed last week, closely approaching Mars, the European Space Agency said Tuesday. The images taken on ...

ESA’s Mars orbiters have observed comet 3I/ATLAS, only the third interstellar comet ever discovered. The faint, distant object revealed a glowing coma as it was heated by the Sun. Researchers are ...

For millions of years, a fragment of ice and dust drifted between the stars—like a sealed bottle cast into the cosmic ocean. This summer, that bottle finally washed ashore in our solar system and was ...