Astronomy Articles

See the Almanac’s Meteor Showers Guide for 2015 for the dates of all the principal meteor showers... read more
Comets are quite the celestial spectacle.  Would you believe that they are simply pieces of dusty ... read more
It's the Wolf Moon! Find January Full Moon phases for 2016—plus, best days by the Moon, full Moon... read more
Thousands of years ago, people spent hours gazing at the night sky. They found that by connecting... read more
Have you ever noticed that on an overcast day the sun will often break through the clouds close to... read more
Named after the Roman god of war, the planet Mars was probably associated with the deity Mars... read more
Sister planet. Nearest neighbor. Goddess of love. How appealing the planet Venus sounds!  But the... read more
In 2015, the autumnal equinox falls on September 23 at 4:21 A.M. (ET). Enjoy our page of fall... read more
When does spring 2015 begin? On this page, get informed about the vernal equinox, spring weather—... read more
Find the December Cold Moon phases for 2015—plus, best days by the Moon, full Moon names, and more... read more
Here are highlights of the November 2015 Moon! The Almanac's monthly Moon guide keeps you informed... read more
Long ago, people could find their way in the outdoors without a compass—at night or during the day... read more
You may have heard that Pluto is no longer a planet. Here's the skinny on what was once known as... read more
In 2015, the Full Moon rises on Saturday, August 29—and it's a “Supermoon.” Learn more below—plus... read more
We see meteor showers, or shooting stars, when the Earth travels though clouds of particles left... read more
Find the June Strawberry Moon phases for 2016—plus, best days by the Moon, full Moon names, and ... read more
Find out the Full Moon dates for May 2016, traditionally called the Full Flower Moon. Full Moon ... read more
In the latter half of 2010 Jupiter will be making it’s brightest, closest appearance in over 45... read more
Here’s a little something deliciously arcane for those who long for the “simplicity” of life... read more
Find the 2016 April Pink Moon phases—plus, best days by the Moon, full Moon names, and more.... read more
Whether you're  a beginner sky watcher or a serious astronomer, here are astronomy resources that... read more
It's the Snow Moon! Find February Full Moon phases for 2016—plus, best days by the Moon, full Moon... read more
The following is a explanation of spring and neap tides in relation to lunar and solar cycles.... read more
What are some of Earth's greatest sky events? Here's the Almanac's take on the most spectacular,... read more
Saturn, the sixth planet from the Sun, is named for the Roman god of agriculture. In Greek... read more
Here at the Almanac, we believe that solar science, the study of sunspots and other solar activity... read more
The aurora borealis or northern lights is one of nature's most dazzling events. Shimmering... read more
Mark these solar eclipse dates on your calendar so you don't miss any of this century's spectacles... read more
The Old Farmer's Almanac uses sunspot activity to help in making its weather predictions. What... read more
The Sun is Hotter Than Hot! The Sun's temperature varies over time and throughout these seven... read more
The Sun Has a Lot of Pull! The Sun makes up more than 99 percent of the total mass of the solar... read more
The Sun Moves Ver-r-r-y Slowly The Sun is the center of our solar system, but it doesn't stay in... read more
The Sun Is a Huge Ball of Energy The Sun is about 865,000 miles in diameter. That's as wide as... read more
The Sun Is Really Far Away The Sun is about 93 million miles away from Earth. The actual... read more
What's the Sun made of? It's not solid. The Sun is composed of plasma, a material made from... read more
The Sun is one of 100 billion stars in our Milky Way galaxy. Scientists estimate that the Sun is... read more
Our full Moon March 2016 guide gives you at-a-glance information: Moon phase dates, Best Days by... read more
Farmers, sailors, and other sky watchers have long used the Moon to predict the weather. The next... read more
What is the influence of solar activity on the weather? Dr. Richard Head, who was the weather... read more