Astronomy Articles

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.
Huge arcs and pillars of color dance and float through the dark.

Mark these solar eclipse dates on your calendar so you don't miss any of this century's spectacles!

The Old Farmer's Almanac uses sunspot activity to help in making its weather predictions. What exactly are sunspots?

The Sun is Hotter Than Hot!

The Sun's temperature varies over time and throughout these seven layers . . .

The Sun Has a Lot of Pull!

The Sun Moves Ver-r-r-y Slowly

The Sun is the center of our solar system, but it doesn't stay in one place.

The Sun Is a Huge Ball of Energy

The Sun is about 865,000 miles in diameter. That's as wide as 109 Earths placed side by side! About 1 million Earths would fit inside the Sun.

The Sun Is Really Far Away

The Sun is about 93 million miles away from Earth. The actual distance varies during Earth's orbit, which is elliptical, or oval, not round.

What's the Sun made of? It's not solid. The Sun is composed of plasma, a material made from electrically charged gas atoms.