NASA’s James Webb Space Telescope observed interstellar comet 3I/ATLAS Aug. 6, with its Near-Infrared Spectrograph instrument. Webb is one of NASA’s space telescopes observing this comet, together providing more information about its size, physical properties, and chemical makeup. Webb’s data, and a preprint is available online.
“Unlike nearly any comet in the Solar System”
SPACEWEATHER.COM NEWS: 08/26/2025 UPDATED
IS 3I/ATLAS REALLY A COMET? The most interesting mystery in astronomy right now is the nature of interstellar object 3I/ATLAS. Most astronomers believe it is a comet. However, iconoclast Avi Loeb of Harvard University makes a compelling case that it might not be.
