The cosmos is typically a predictable dance of gravity and orbits, but occasionally, a visitor crashes the party with such erratic behaviour that it forces astronomers to question everything they know about the solar neighbourhood. In July, the silence of deep space was punctuated by an anomaly detected by a survey telescope in Chile.
Astronomers call it 3I/ATLAS, and it is only the third time we've ever caught a visitor like this cruising through our cosmic backyard. Naturally, its arrival generated a heated debate. Most scientists are betting it's just a natural comet with an icy core and a dusty tail, but no one is quite ready to rule out the idea that it might be artificial completely.
