Time-Lapse Video Captures Partial Solar Eclipse

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Maybe your mother told you it's not polite to stare.

It wasn't safe either, NASA said, for those who looked at Thursday's partial solar eclipse.

"Don't stare," NASA said. "Even at maximum eclipse, a sliver of sun peeking out from behind the Moon can still cause pain and eye damage. Direct viewing should only be attempted with the aid of a safe solar filter."

The show in the sky reached its height at 5:45 p.m. ET, NASA said, meaning the eastern half of the country should have gotten a view before the backdrop of golden twilight hues.

The moon clipped the sun and should have made it look like a fingernail as it set in the west for most of the country and Canada.

People living in the Central Time Zone had the best view, NASA said. New England and Hawaii will miss out on this one.

The eclipse was expected to last for over two hours.

Protect your eyes

NASA urged people viewing the eclipse to protect their eyes.

NASA suggested some old tricks for viewing indirectly, like punching a hole in cardboard and projecting the light seeping through it onto a surface away from the sun.

Or letting a tree do the work for you: "Overlapping leaves create a myriad of natural little pinhole cameras, each one casting an image of the crescent-sun onto the ground beneath the canopy," NASA said.

If you missed this one, the next solar eclipse over North America will occur in about three years -- and it will be a more dramatic and rare total eclipse.

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