The interstellar comet 3I/ATLAS, only the third such object detected, is spewing water in the form of hydroxyl emissions. Researchers using NASA's Neil Gehrels Swift Observatory have confirmed water on its surface. This suggests a structure differing from solar system comets.
Comet 3I/ATLAS continues to reveal surprises as astronomers study this rare interstellar visitor. Detected as only the third interstellar object ever observed, it is now producing hydroxyl (OH) emissions, which indicate the presence of water on its surface. These emissions mimic a cosmic fire hydrant, according to analyses.
A team of researchers at Auburn University in Alabama made the discovery using NASA's Neil Gehrels Swift Observatory. Their findings, detailed in a study published in The Astrophysical Journal Letters, highlight that the comet's structure likely differs significantly from those originating in our solar system. This difference could provide insights into the composition of objects from other star systems.
The observations underscore the comet's unique nature, building on its initial detection and ongoing monitoring.