very pretty

 

Now that 3I/ATLAS is in our solar system, sunlight is warming that crust and causing it to shed relatively large, heavy grains of dust. These grains are too massive to be quickly pushed around by radiation pressure or the solar wind. Instead they linger, creating a sunward-pointing jet that does not bend backward like a normal tail. Interstellar Comet 3I/ATLAS photographed in color by Michael Jäger and Gerald Rhemann