3I/Atlas isn't deep space aliens and didn't 'change color'

Don't believe the comet conspiracy theories. Breakthroughs, discoveries, and DIY tips sent every weekday. It's only the third known object to visit our solar system from deep space, and at around 130,000 mph, it's also the fastest comet ever clocked. Early examinations noted the comet's gas coma-the cloud of sublimated debris formed as it passes near a star-experienced a " rapid brightening " compared to previously observed comets at similar distances from the sun. While earlier observations indicated 3I/ATLAS appeared red in color, additional analysis has led astronomers to note in a preprint study it's actually "distinctly bluer than the sun."