As NASA continues to study the interstellar comet 3I/ATLAS, two space telescopes have made new observations, together providing more information about its size, physical properties, and chemical makeup. NASA's James Webb Space Telescope observed the object with its Near-Infrared Spectrograph instrument go.nasa.gov/4n3RDS7 and the new SPHEREx telescope contributed new data as well go.nasa.gov/47IVWO3 All about this comet, the third such interstellar visitor that NASA has observed: science.nasa.go