Solar Eclipse 101

A total solar eclipse happens somewhere on Earth once every year or two. What is an eclipse? Learn more about how solar eclipses happen, the four types of eclipses, and how to view the sun safely if you're within the path of totality. Eclipse map adapted with permission: https://www.exploratorium.edu/eclipse

Lucky skywatchers in Southeast Asia get a rare front-row seat to a total eclipse on March 8 and 9, and Pacific islanders will see a still-dazzling partial eclipse. But the rest of the world doesn’t have to miss out: If you can’t hop a plane to the middle of the Pacific Ocean, you can watch it live online.

(Just come back to this page and scroll down to see our handy video feed, below.)

The moon passes between Earth and the sun every month, but a total solar eclipse happens only when the three celestial bodies are perfectly aligned. And this particular eclipse is even more special: It’s happening while the moon is at its closest point to Earth—called perigee—making the

DON'T MISS THE REST OF THIS STORY!
Create a free account to continue and get unlimited access to hundreds of Nat Geo articles, plus newsletters.

Create your free account to continue reading

No credit card required. Unlimited access to free content.
Or get a Premium Subscription to access the best of Nat Geo - just $19
SUBSCRIBE

Read This Next

SeaWorld violated the Animal Welfare Act. Why is it still open?
'World’s worst shipwreck' was bloodier than we thought
World’s first ultrasounds of wild manta rays reveal a troubling truth

Go Further

Subscriber Exclusive Content

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet