Moon Question of the Day
How old is the Moon?
Moon Folklore of the Day
A ring around the moon is a prediction of rain or snow to come.
Featured Astronomy Articles
When does spring begin? Astronomically speaking, the March equinox occurs when the Sun crosses the celestial equator on its way north along the ecliptic. In the Northern Hemisphere, the March equinox is known as the vernal, or spring, equinox, and...
See which eclipses will be visible across North America. See 2015 and 2016 Eclipse Dates.
Each month, we highlight what's happening in the skies—including bright planets, conjunctions, and meteor showers. Read Sky Watch.
Sky Maps (Star Chart)
Get free, printable Sky Maps (Star Charts) to find your way around the night sky.
View Sky Maps for MARCH.
Catch a star! See meteor showers dates for 2015 —plus viewing tips.
With the Tide Predictions Calculator, find high and low beach tides for any location in the U.S. and Canada for any date.
Find like-minded people and friendly discussion. Click on the links below to read recent topics and to post comments.
See more posts in the: Astronomy Forum
Lunar crescents following new Moon
Thank you for making Bob Berman's excellent article available from the 2011 Old Farmer's Almanac. To find Bob Berman's article. First, under the Astronomy option: Go to Moon...
Angle of the Sun
Hello! I was wondering why the angle of the sun is different in Autumn than in Spring. The Azimuths are the same, but in Autumn the shadows are longer and the light seems...
does anyone know what happened to her thread for best surgery dates? i can no longer put off knee replacement and have run out of time so i must get it done next month. i have no...
Colors around Moon
I remember reading in the almanac what it means when you seen blue or other colored auras around the moon, but I can't remember what it said. Can anyone bring me up to date with...