New data from NASA's SPHEREx and the Hubble Space Telescope show that the object known as 3I/ATLAS has changed in ways that contradict scientists' expectations. The mysterious visitor from the far reaches of space was discovered on July 1, 2025.
It is the third interstellar object ever found in the solar system, following 1I/'Oumuamua and 2I/Borisov. The celestial body recently approached the sun as closely as possible and has developed a number of unusual features, including an 'anti-tail' that points toward the sun and three evenly spaced 'mini-jets' that appear to wobble with clockwork precision.
