As interstellar comet 3I/ATLAS rounds the Sun, rumors claim a 1420 MHz Fibonacci beacon. Spacecraft data instead show natural comet activity, including the first-ever water detection from an interstellar visitor and close imaging from Mars orbit.
Quick Take: Two different “ATLAS comets” are trending. One is C/2024 G3 (ATLAS), a sun-skirting comet that peaked in early 2025 and put on a show for the Southern
