3I/ATLAS is Beginning to Reveal What it Truly Is. The Countdown Begins...(Stefan Burns)

Apparent magnitude (brightness) measurements of 3I/ATLAS reveal a sharp ~20x increase in brightness since around September 7th, a massive unexpected jump from this mysterious interstellar visitor. Is our instrumentation faulty, or has its complex dusty plasma coma really grown that much since reaching 2 astronomical units (AU) of the Sun? Geophysicist Stefan Burns reports....



A conventional and reasonable look at 3I/Atlas. There's still the issue of it having unusual characteristics such as its anti-tail.

[Posted at the SpookyWeather2 blog, September 21, 2025.]