Study: Interstellar Comet 3I/ATLAS Formed in Cold, Nitrogen-Rich Environment
Astronomers have found new evidence that 3I/ATLAS, only the third confirmed interstellar object ever detected entering the Solar…
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 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…
Interstellar Comet 3I/ATLAS Formed in Ultra-Cold Planetary System, ALMA Reveals
Water is made of two hydrogen atoms and one oxygen atom, hence its H2O formula. In typical water…
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,…
3I/ATLAS is Unusually Rich in Methanol, ALMA Observations Show
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have detected hydrogen cyanide (nitrogen-bearing organic molecule commonly seen in…
Juice Spies Interstellar Comet 3I/ATLAS
The JANUS science camera aboard ESA’s Jupiter Icy Moons Explorer (Juice) has captured new images of the interstellar…
Rare Cosmic Lineup Gives Hubble Close Look at 3I/ATLAS
On January 22, 2026, the NASA/ESA Hubble Space Telescope observed the interstellar comet 3I/ATLAS nearly perfectly aligned with…
3I/ATLAS Shows Signs of Full Cometary Awakening after Perihelion
According to new observations by NASA’s SPHEREx mission, the interstellar object 3I/ATLAS has dramatically changed its behavior, developing…
Scientists Announce Results After Scanning 3I/ATLAS for Alien Signals
In July, researchers using the NASA-funded Asteroid Terrestrial-impact Last Alert System survey telescope in Chile made an exceedingly…
VLT Reveals Detailed Spectral Portrait of 3I/ATLAS
An international team of astronomers from Chile, Europe, the United States, Canada and New Zealand has captured the…
NASA’s Parker Solar Probe Captures 3I/ATLAS
Using the WISPR (Wide-Field Imager for Solar Probe) instrument aboard NASA’s Parker Solar Probe, scientists observed the interstellar…