As this interstellar object approached its closest point to Earth, a massive radio telescope attempted to sniff out a technosignature. Reading time 3 minutes From the moment astronomers discovered ...

3I/ATLAS is only the third interstellar object ever observed traveling through the solar system, following 1I/'Oumuamua in 2017 and 2I/Borisov in 2019. Each encounter has sparked fascination—and ...

This has never been observed before. For the first time in history, scientists are watching an alien comet fall apart. The object comes from beyond our Solar System and has traveled for billions of ...

I don’t think anyone declared it, but 2025 was a big year for comets. There was comet Lemmon, which was discovered in January and stayed in the news for a good nine months. The images of Lemmon’s long ...

As the comet heads toward its closest pass by Earth, a team led by NASA astrochemist Martin Cordiner used the Atacama Large Millimeter Array (ALMA) in Chile to study the gases streaming off its ...

The coronagraph for NASA’s Roman Space Telescope will allow the observatory to take snapshots of giant exoplanets. Astronomers have found what could become the first target for a crucial test of ...

Astronomers have found what could become the first target for a crucial test of NASA’s upcoming Nancy Grace Roman Space Telescope, a soon-to-launch observatory that serves as a pathfinder mission for ...

An interstellar object named 3I/ATLAS, confirmed to be a comet, is passing through Earth's solar system. The comet poses no threat to Earth and will make its closest approach to our planet on Dec. 19.

Laura Nicole Driessen is an ambassador for the Orbit Centre of Imagination at the Rise and Shine Kindergarten, in Sydney's Inner West. On October 29, Comet 3I/ATLAS reached its closest point to the ...

An interstellar object roughly the size of Manhattan has captured scientists’ attention — and one prominent Harvard astrophysicist believes it could be something far beyond natural. According to the ...

The Manhattan-size interstellar object 3I/ATLAS exhibited signs of non-gravitational acceleration and appeared “bluer than the sun” as it passed our local star — which could be signs of an alien craft ...