Why are stars so bright on winter nights?

Why are the winter stars so bright? It’s winter in the Northern Hemisphere (summer in the Southern Hemisphere), and if you look outside in the evening you’ll see many bright stars. Beginning around now, the evening sky as seen from around the world will look clearer and sharper than it did 6 months ago, assuming no … Read more

The Sky This Week from December 20 to 27: Welcome the winter solstice

Friday, December 20Now that the evening sky is Moon-free, it’s time to aim for fainter targets, including 12th-magnitude Comet 333P/LINEAR. Located in far northern Cygnus, close to where that constellation’s border meets those of Cepheus and Draco, LINEAR sits some 8.4° northeast of magnitude 3.8 Kappa (κ) Cygni tonight. The comet is roughly halfway along … Read more