Here’s an image of the new Comet SWAN25B. Michael Matiazzo captured this image on September 14, 2025. It shows an impressive, 2.5-degree-long tail, which translates to about 5 full-moon diameters long! The bright star in the upper left of the image is Spica. The comet will pass close to that star around September 15-16. New Comet SWAN25B soars into the …
Read More »New comet SWAN25B already bright, but near sunset’s glow
