Comet

There’s a comet in the pre-dawn sky right now that most people will never hear about, because it isn’t the kind that makes the news. Comet 220P/McNaught is a small periodic visitor that has done something unusual twice this summer: it blew up. Two separate outbursts, in late May and again on August 5, dragged a 17th-magnitude speck up into binocular range. In mid-August it was sitting around 6th to 7th magnitude, low in the constellation Cetus before sunrise: a binocular object under a dark sky, and already fading. If you want it, this is the week to try. ...

Comet C/2025 R3 (PanSTARRS) passed perihelion on April 19, 2026 at 0.499 AU from the Sun, then made its closest pass of Earth on April 26 at 0.489 AU (about 73 million km). For a few days around peak it pulled to roughly magnitude +3 to +5, depending on whose visual estimate you trust on the COBS database. Bright enough to spot in dark-sky binoculars, faint enough that nobody from the Northern Mediterranean was going to call it a naked-eye showpiece. ...