The depths of interstellar space have thrown another cosmic puzzle into our solar system. The most recent information about the visitor known as 3I/ATLAS has astronomers both confused and interested. The object has started to show secrets about its internal rhythm and a strange, almost haunting alignment that is hard to explain after it got close to the sun on Oct. 29, 2025, a point known as perihelion.
Professor Avi Loeb from Harvard University has been tracking the object's 'heartbeat' with the help of Toni Scarmato. The team was able to figure out how fast this interstellar nomad is spinning by looking at pictures from the Hubble Space Telescope taken between Nov. 20 and Dec. 27, 2025, and data from the 0.25-meter MPC L92 telescope in Calabria, Italy, taken between Dec. 9 and 22, 2025. The results point to a post-perihelion rotation period of about 7.1 hours, but the direction of this spin is what has scientists talking.
