263,579 subscribers and counting ...
The ecliptic – sun and moon’s path, marked in green on our chart – cuts through the Winter Circle. So, every month the Circle is visible, the moon sweeps through these stars.
To astronomers, the word “luminous” refers to a star’s intrinsic brightness. Sirius is our sky’s brightest star, but only because it’s relatively nearby at 8.6 light-years away.
As Earth makes its grand tour around the sun each year, the constellations all shift westward in our sky. Orion is a good one to notice.
Epsilon Aurigae’s light dims for a period of about 2 years, in a 27-year cycle. The star’s last dimming was from 2009 to 2011.
The Big Dipper is easy to recognize, but the Little Dipper … not so much. Here’s a tip that can help.
The 2 outer stars in the Big Dipper’s bowl point to the North Star, aka Polaris.
The moon is waning again, leaving the sky dark in early evening. Watch for the mysterious zodiacal light in the west after true darkness falls. Southern Hemisphere? Look east before dawn.
The most important key is to think of the moon as a world in space, with a day and night side.
How to find to find the constellation Taurus in your night sky. Plus the names of some of its bright stars and star clusters and its mythology.
Tonight and tomorrow night, let the moon show you the constellation Taurus the Bull on the great dome of sky. How to recognize the Bull’s 2 most prominent features, here.
Antarctic Milky Way selfie