Sunday, October 19, 2025

Twin Comets, Visible With Binocs -- In The Night Skies -- Tomorrow Night, Through Tuesday Night... Excellent.


They will be easiest to view about 90 minutes after sunset -- but before the moon rises -- and near the horizon, just below the Big Dipper.

Last year saw no comets visible to the naked eye -- but now we have two, in the same week, in 2025. Here's the latest, from LiveScience.com:

. . .If you want to see two comets, your best chance will be early this week. After a year without any comets bright enough to be seen without specialist equipment, two — Comet C/2025 A6 (Lemmon) and Comet C/2025 R2 (SWAN) -- have come along at once.

Comet Lemmon may look more like a lime than its name suggests, but on Tuesday (Oct. 21), the dusty snowball from the outer solar system will reach its closest point to Earth and most likely shine at its brightest. It's. . . about the same brightness as spring's Beehive Cluster (M44) and only a little dimmer than the Andromeda galaxy (M31).

While Comet Lemmon is technically visible to the naked eye in very dark skies, you'll need binoculars to glimpse another, fainter icy visitor, Comet C/2025 R2 (SWAN). Remarkably, Comet SWAN will get closest to Earth Monday (Oct. 20), the day before Comet Lemmon, but it'll be about three times dimmer, at magnitude 5.9. (In astronomy, the higher the magnitude, the dimmer the object). . . .

Follow the [handle, toward the horizon, while looking at] the Big Dipper -- to "arc to Arcturus"; the comet will be about two-thirds of the way there. On Tuesday, it will be a little higher.

For Comet SWAN, look for the Summer Triangle of bright stars — Vega, Deneb and Altair — in the southwest. You'll find Comet SWAN about halfway between Altair and the horizon. . . .


Excellent -- and I am eternally grateful that so, so many natural wonders depend, in no manner. . . on the whims of any earthly dotard. Onward.

नमस्ते

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