Interstellar Comet 3I/ATLAS Likely Originated in Outskirts of Ancient Planetary System
Astronomers using ESO’s Very Large Telescope (VLT) have measured carbon and nitrogen isotope ratios in 3I/ATLAS, the third…
Interstellar comet 3I/ATLAS may be a fragment of a 12-billion-year-old planetary system
As interstellar comet 3I/ATLAS moved away from the Sun in December 2025, an international team led by Martin…
Interstellar Comet 3I/ATLAS Is 12 Billion Years Old, Almost Three Times Older Than the Solar System
Credit: ESA. One year ago, on July 1 2025, astronomers discovered a fascinating new object moving through the…
Interstellar Comet 3I/ATLAS Formed Up To 12 Billion Years Ago, New Observations Suggest
The interstellar comet 3I/ATLAS carries a chemical fingerprint unlike anything in our Solar System, and it may have…
Webb Detects Methane on Interstellar Comet 3I/ATLAS
Using the spectral data from the Mid-Infrared Instrument (MIRI) onboard the NASA/ESA/CSA James Webb Space Telescope, astronomers have…
Interstellar Comet Gave Scientists Their First Taste of Alien Water
The Hubble Space Telescope imaged 3I/ATLAS on 30 November 2025 when it was 286 million kilometers from Earth.…
Comet 3I/ATLAS Formed in an Ultra-Cold Alien Star System
Water in the Solar System has a unique chemical signature: it is deuterated, that is, enriched in deuterium,…
How Interstellar Comet 3I/ATLAS Met Unlikely Observer
On its way to Jupiter, ESA’s Juice spacecraft briefly turned its gaze toward a rare interstellar visitor, 3I/ATLAS,…
How Juice Came To Observe Interstellar Comet 3I/ATLAS
First glimpse of comet 3I/ATLAS from Juice science camera – ESA larger image No matter how much planning…
Narrowband Radio Technosignature Search Toward 3I/ATLAS With FAST
Scatter plots of potential candidate in frequency, drift rate and signal-to-noise ratio for each polarization channel. The color…
How Open NASA Data on Comet 3I/ATLAS Will Power Tomorrow’s Discoveries
The interstellar comet 3I/ATLAS will soon leave our solar system, never to return, but the observations of the…
Interstellar comet 3I/ATLAS packed with alcohol stuns astronomers: Here’s what its alien chemistry could reveal about planet formation |
Astronomers have spotted something unusual in a comet passing through our Solar System. 3I/ATLAS, only the third confirmed…