Astronomy Articles

Here’s a little something deliciously arcane for those who long for the “simplicity” of life before computers . . .

Listed in the Astronomical Glossary of The Old Farmer's Almanac is the word Epact, expressed as a number from 1 to 30.

Here are highlights of the April 2013 Moon! The Almanac's monthly Moon guide keeps you informed about full Moon names, Moon phase dates, and Best Days by the Moon.

Whether you're  a beginner sky watcher or a serious astronomer, here are astronomy resources that will help you watch the heavens.

Here are highlights of the February 2014 Moon! The Almanac's monthly Moon guide keeps you informed about full Moon names, Moon phase dates, and Best Days by the Moon.

What are some of Earth's greatest sky events? Here's the Almanac's take on the most spectacular, memorable, and even scary sky phenomena visible to the naked eye since 1792.

Saturn, the sixth planet from the Sun, is named for the Roman god of agriculture. In Greek mythology, Saturn became the ruler of the universe when he led a successful rebellion against his father, Uranus.

Here at the Almanac, we believe that solar science, the study of sunspots and other solar activity, can influence weather here on Earth. In this article, we explain the basics of solar activity, solar cycles, and what's up with the Sun now.

The aurora borealis or northern lights is one of nature's most dazzling events. Shimmering curtains of color waft in the night air.