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3I/ATLAS Is Now Headed Toward Mars, as Mystery Surrounding Interstellar Visitor Grows
ESA and NASA will use Mars orbiters to observe comet 3I/ATLAS during its close 30 million km flyby of Mars, aiming to capture images and spectral data of this interstellar visitor.
7 Articles
7 Articles
3I/ATLAS is Now Headed Toward Mars, as Mystery Surrounding Interstellar Visitor Grows
A composite image showing the movement of 3I/ATLAS, as seen by the ESO’s Very Large Telescope (Credit: ESO/O. Hainaut) Welcome to this edition of The Intelligence Brief… This week, astronomers are preparing for the close approach of the interstellar comet 3I/ATLAS, which will pass near Mars on October 3, 2025, offering scientists their best chance yet to study this mysterious cosmic visitor. In our analysis, we’ll be looking at 1) how NASA’s HiR…
4 Powerful Telescopes Agree: Interstellar Comet 3I/ATLAS Really Is Bizarre
We already knew that interstellar comet 3I/ATLAS was different from the other two interstellar objects known to have traversed the Solar System, but a slew of new observations suggest it may be even weirder than the weirder that it was.
Mysterious Object Headed Toward Mars
Earlier this year, astronomers spotted a mysterious interstellar visitor, widely believed to be a comet, screaming into our solar system. With the help of NASA's James Webb Space Telescope, astronomers recently got a closer look at the object, dubbed 3I/ATLAS, that revealed an unexpectedly high ratio of carbon dioxide to water for a comet, as well as a highly irradiated ice core. Ever since astronomers spotted the object, Harvard astronomer Avi …
Interstellar comet 3I/ATLAS will fly by Mars 1 month from now — and Europe's Red Planet orbiters will be ready
The interstellar comet 3I/ATLAS will zoom past Mars in October 2025, and ESA's Mars orbiters will attempt to image and analyze the object during the encounter.
Hubble Spots Interstellar Comet 3I/ATLAS as It H\eads for Mars
On October 3, 2025, interstellar comet 3I/ATLAS will pass just 30 million km from Mars — nine times closer than from Earth. ESA’s Mars Express and TGO, along with NASA and China’s orbiters, will attempt to image its coma, analyze gases, and study this rare visitor from beyond the solar system.
What initially appears to be just another distant comet turns out to be an extraordinary object: 3I/ATLAS is only the third object ever identified as interstellar to be observed crossing our solar system – meaning it was not born in our solar system but came from the depths of the galaxy. It is moving at a dizzying speed of more than 200,000 km/h, and its age is estimated at about 7 billion years – much older than our solar system. These unusua…
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