Coming Tonight to North America: A Total Lunar Eclipse

By Andrew Moseman | December 20, 2010 9:51 am

lunareclipseA week ago, sky-watchers were bundling up to take in the Geminid meteor shower. But tonight, there’s an even more powerful show coming to the sky. In North America, a total eclipse of the moon begins at about 1:30 a.m. Eastern (Tuesday morning).

From Phil Plait:

Lunar eclipses are cool, but slow. They’re not like solar eclipses which last a few minutes at most; the shadow of the Earth is quite large, and it takes the Moon a while to move through it (also unlike a solar eclipse, lunar eclipses are perfectly safe to watch with your eyes, with binoculars, or through a telescope without protection). Not only that, there are two parts to the shadow: the outer penumbra, which is very difficult to see when it falls on the Moon, and the much darker umbra, which is what really casts the Moon into the dark. In other words, things really gets started when the Moon moves into the umbra.

If it’s cloudy where you are, or you’re on the wrong side of the planet, never fear: you can still get a look because NASA is hosting a live chat and video feed of the eclipse! JPL has set up a Flickr page for people to post their pictures of the eclipse, too. If you Americans miss this eclipse, you’ll have to wait over three years before the next one, which occurs on April 14, 2014.

For more details, check out the rest of Phil’s post at Bad Astronomy.

Related Content:
80beats: Astronomers Display the Eclipse of a Star With Amazing Thermal Images
Bad Astronomy: Solar Eclipse, From Space!
Bad Astronomy: The July eclipse, from 12,000 meters up

Image: Anthony Ayiomamitis

MORE ABOUT: astronomy, eclipse, moon
  • Tiffani Brissette

    Seasons Greetings!

    It was a beautiful sight and I always wonder what the Earth looks like from the moon when this happens! Also I wonder, since the moon always moves away from the “cone” of the Earth’s shadow so we don’t have regular eclipses like this and so you’d miss seeing what the Earth looks like from the moon if you were there then, would it be possible to build a satellite that would fly in such a way that it will stay in the “cone” where the Earth eclipses the sun so you can always see by TV the same eclipse as you would when the moon is in the “cone” of the Earth’s shadow? Hope I asked this right!

    Merry Christmas all!


Discover's Newsletter

Sign up to get the latest science news delivered weekly right to your inbox!


80beats is DISCOVER's news aggregator, weaving together the choicest tidbits from the best articles covering the day's most compelling topics.

See More

Collapse bottom bar