SUNSET: 
How Did the Ancients Predict Eclipses? The Saros Cycle
Before the advent of computers or even a working theory of the solar system, the ancients predicted solar eclipses. How did they do it?
The History of Baily’s Brilliant Beads
Discover the observations of astronomer Francis Baily as he watched sunlight bead along the lunar limb during an 1836 annular eclipse.
El Niño and the 2024 Total Solar Eclipse
What will the ongoing El Niño event do to the chance of cloud cover along the 2024 total solar eclipse track?
How Rare Is a Solar Eclipse?
There are two solar eclipses every year — so why are they so rare?
Eclipse Apps, Books, Videos: Resources for the 2024 Total Solar Eclipse
Find some of our favorite resources for the April 8, 2024, solar eclipse, including apps, video explainers, children's activities, and books.
Where to See the Two Great North American Eclipses
The October 2023 and April 2024 solar eclipses will thrill millions of North Americans. These maps will enlighten and inspire viewers for the events to come.
Eclipse Photographer’s Checklist
For those preparing to photograph a total solar eclipse, Fred Espenak shares his eclipse photography checklist.
The "Great American" Solar Eclipse Is Just a Year Away
A long totality passing through Mexico, the U.S., and Canada beckons — and planning ahead will be crucial.
What to Look For & When During a Total Solar Eclipse
Look for these astronomical and Earthbound phenomena during the total solar eclipse on April 8, 2024.
The Hows & Whys of Solar Eclipses
Take a few minutes to become an eclipse expert for family and friends.
How to Watch a Solar Eclipse Safely
Our star is an amazing object to observe, whether by eye or with optical aid. These time-tested tips will let you see the solar disk worry-free.
Eclipse Photography: Framing the Eclipse
Here are several ideas photographers can use when shooting their next total solar eclipse.
Two Years to the 2024 Total Solar Eclipse!
It’s never too early to start getting excited — and begin planning — for an event as spectacular as a total solar eclipse.
How to Photograph a Solar Eclipse
Learn how to photograph a solar eclipse: capturing a solar eclipse on film, plus learn how to do wide-angle sequencing.
Solar Eclipse Planning Workshop, April 8-9, 2022, Virtually Anywhere
Help us get ready for the 2023 and 2024 North American solar eclipses! If you’re a solar eclipse enthusiast with an organizational bent, you'll want to join us at a virtual planning workshop to be held on April 8–9, 2022.
T–3 Years Until the 2024 Total Solar Eclipse
The countdown has begun to a special total solar eclipse that will cross Mexico, the U.S. and Canada on April 8, 2024.
Join Us in Planning for the Next "Great American Eclipse"
Are you a solar eclipse enthusiast with an organizational bent? An upcoming virtual workshop geared toward planning for the 2023 and 2024 events could be just the thing for you.
Solar Eclipse Activities for Kids and Families
Enrich the eclipse experience — especially the long, partial phases — with solar eclipse activities for the young and young at heart.
DIY: Astronomy Projects & Guidance
A Compact, Lightweight Solar Projection Viewer
Learn how to make a travel-friendly solar projection viewer for your telescope for the next total solar eclipse!
Low-Tech Eclipse Viewing
What to do if you're caught without optics on eclipse day. Low-tech eclipse viewing options from pinhole to binocular projection.
