Eclipse Syllabus
Solar Eclipse Learning Center
Browse the full SolarWatch eclipse curriculum: foundations, totality phenomena, celestial mechanics, history, August 2026 planning, and enthusiast deep dives.
View the syllabusPhotography Guides
Learn how to capture stunning photos using natural light and sun position
Astronomy & Eclipses
Understand moon phases, solar eclipses, and celestial events
How Animals React During a Total Solar Eclipse
Birds quiet down, insects may start evening calls, temperatures drop, and stars appear. Learn how animals and nature can react during totality.
The August 12, 2026 Total Solar Eclipse: Everything You Need to Know
A practical guide to the August 12, 2026 total solar eclipse across Greenland, Iceland, Spain, and the western Mediterranean, with city and timing notes.
How Babylonians Learned to Predict Eclipses
Babylonian eclipse prediction grew from careful sky records, omen traditions, and repeating lunar cycles. Learn what they could and could not predict.
Baily's Beads and the Diamond Ring Effect
Baily's beads and the diamond ring effect happen when sunlight passes through lunar valleys at the edge of totality. Learn what to watch for.
Eclipse Chasers: A Brief History of Totality Tourists
Eclipse chasing has grown from scientific expeditions and Victorian travel into modern totality tourism. Learn why people travel for a few minutes of darkness.
C1, C2, C3, C4: The Four Contact Points of an Eclipse
Learn what eclipse contact times mean, why C1 through C4 are local, and how they guide safety, photography, and totality planning.
The Eclipse That Stopped a War
The Battle of Halys eclipse is one of history's most famous eclipse stories. Learn what happened in 585 BCE and why the Thales prediction is debated.
Helium Was Discovered During an Eclipse
During the 1868 solar eclipse, spectroscopy revealed a mysterious yellow line in the Sun's atmosphere. That line led to the discovery of helium.
How Eclipse Predictions Work
A clear guide to how solar eclipses are predicted using orbital models, Besselian elements, lunar terrain, and local circumstances.
The Moon's Elliptical Orbit and Eclipse Types
The Moon's distance from Earth changes through its elliptical orbit. Learn why perigee and apogee help decide whether an eclipse is total or annular.
Why the Moon Looks the Same Size as the Sun
The Moon is much smaller than the Sun, but it is also much closer. Learn the cosmic coincidence that makes total solar eclipses possible.
The Path of Totality Explained
What the path of totality is, why it is a narrow ribbon, how fast it moves, and why local planning matters.
The Saros Cycle: How Eclipses Repeat Every 18 Years
The Saros cycle is the roughly 18-year rhythm that links related eclipses. Learn why eclipses repeat and why each one still lands somewhere new.
Shadow Bands: The Ripples Before Totality
Shadow bands are faint, wavy lines that can ripple across the ground just before and after totality. Learn what causes them and how to look for them.
The Solar Corona: The Sun's Hidden Crown
The solar corona is the Sun's faint outer atmosphere, visible during totality. Learn why eclipses reveal it and why it is scientifically mysterious.
How a Solar Eclipse Proved Einstein Right
The 1919 total solar eclipse let astronomers measure starlight bent by the Sun, giving famous early evidence for Einstein's general relativity.
Magnitude, Obscuration, and Gamma: Eclipse Numbers Explained
Eclipse magnitude, obscuration, and gamma describe different parts of solar eclipse geometry. Learn what each number means and how to read them.
Ancient Eclipse Myths Around the World
A tour of solar eclipse mythology, from dragons and wolves to ancient sky stories that helped people explain sudden darkness.
How to Safely Watch a Solar Eclipse
Learn the essential solar eclipse safety rules: ISO 12312-2 eclipse glasses, safe indirect viewing, camera filters, and when totality is safe.
The Four Types of Solar Eclipse
Total, annular, partial, and hybrid solar eclipses explained in plain language, with the shadow geometry behind each type.
What Is a Solar Eclipse?
A plain-language guide to solar eclipses: how the Moon covers the Sun, why totality is rare, and what you can see from the path of totality.
Why Doesn't a Solar Eclipse Happen Every Month?
Solar eclipses need a new Moon plus a node crossing. Learn why the Moon's tilted orbit makes eclipses seasonal instead of monthly.
Put These Guides into Practice
Download SolarWatch to get precise golden hour times, sun position, and moon phases for your location.
Download on the App Store