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Today in science: Great Alaska earthquake

The earthquake – centered in Prince William Sound off the coast of south-central Alaska – was the most powerful yet recorded in North America at magnitude 9.2.

Find Mizar and Alcor in the Big Dipper

Early stargazers used this pair of stars as a vision test.

What makes a pulsar pulse?

Hear the word “pulsar” and wonder what it is? Take 95 seconds to watch this video from NASA Astrophysics.

How a Venus flytrap knows to snap shut

Cool video, especially if you’ve never seen a Venus flytrap in action.

Use Big Dipper to find Little Dipper

The Big Dipper is easy to recognize, but the Little Dipper … not so much. Here’s a tip that can help.

Use Big Dipper to find North Star

Here’s how to spot Polaris, aka the North Star. The 2 outer stars in the Big Dipper’s bowl point to it.

Today in science: Discovery of Uranus

It was the first planet found since ancient times. William Herschel noticed it in 1781 during a routine survey of the stars.

California sediments pour into the sea

Drought plagued California and much of the American Southwest for nearly 5 years before this year. Now satellites see swollen rivers dumping sediments into the sea.

Astro festivals, star parties, workshops

The season for star parties – where amateur astronomers with telescopes will show you the night sky – is just ahead. Find one near you …

Born in March? Here’s your birthstone

Happy birthday to all you March babies. Your month has 2 birthstones – the aquamarine and the bloodstone.