Even the most ambitious scientific theories can be humbled by the vast, silent emptiness of deep space. For months, astronomers have been trying to figure out what 3I/ATLAS is, an interstellar wanderer that is so strange that it started a worldwide debate about whether we were finally being visited by something — or someone — else.
A lot of scientists still don't believe it, saying that 3I/ATLAS is just a big comet with strange properties. The man who was so sure that the mysterious visitor came from another planet seems to be changing his mind now that it is slowly leaving our solar system and heading back into the darkness.
