
2025-08-07 19:04:16
Hubble Space Telescope Observations of the Interstellar Interloper 3I/ATLAS: #Interstellar Comet, Hubble Makes Size Estimate: https://science.nasa.gov/missions/hubble/as-nasa-missions-study-interstellar-comet-hubble-makes-size-estimate/ and https://www.esa.int/ESA_Multimedia/Images/2025/08/Hubble_sizes_up_rare_interstellar_comet (which is 5.6 km > nucleus diameter > 320 m, so we still don't know much here).