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Astronomy Articles

Named after the Roman god of war, the planet Mars was probably associated with the deity Mars because of its reddish tinge. Red was the color of anger, fire, war, and blood.

Sister planet. Nearest neighbor. Goddess of love. How appealing the planet Venus sounds! 

In 2015, the autumnal equinox brings the start of fall on the 23rd at 4:21 A.M. Enjoy a first day of fall facts, folklore, and more!

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...

Find the December Cold Moon phases for 2015—plus, best days by the Moon, full Moon names, and more.

Here are highlights of the November 2015 Moon! The Almanac's monthly Moon guide keeps you informed about full Moon names, Moon phase dates, and Best Days by the Moon.

Long ago, people could find their way in the outdoors without a compass—at night or during the day, using natural directional signs. Here are some pointers for the next time you are camping, hiking, or just outdoors. Don't get lost!

You may have heard that Pluto is no longer a planet. Here's the skinny on what was once known as our Sun's smallest planet.

Find the August Sturgeon Moon phases for 2015—plus, best days by the Moon, traditional Moon names, and more.

Learn about the Full Buck Moon for July—plus, full Moon names, best days by the Moon, and more.


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