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Grades 9-12

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Article

Article: One in a Million

Have you ever stumbled upon a discovery while looking for something completely different? See what surprises astronomers found as part of the Sloan Digital Sky Survey.

Interactive

Interactive: How Far is Far?

This interactive explains how astronomers measure the properties of light from faraway space objects to calculate their distance from Earth. Users click through a series of pages that explain the concepts step-by-step with illustrations and animations.

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Article

Article: The Big Questions

What is the Universe’s arrangement today? What did it look like at its birth? And how did we get from then to now? These are just some of the “Big Questions” astronomers are making headway answering.

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Essay: Stars in Exquisite Accuracy

There’s only one star that astronomers have a firm grasp on: the Sun. Fundamental facts about other stars remain elusive. Find out how a powerful interferometer atop Mount Wilson in Southern California hopes to change that.

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Article: GRACE Watches Earth's Water

Earth's water is in constant motion. It cycles through the planet's atmosphere, surface, and depths. This water cycle is fundamental to Earth’s climate — and is being dramatically affected by global warming.

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Article

Shaping a Continent: Version 1.0

Discover how scientists are now marrying traditional fieldwork with cutting-edge computer modeling to produce the first animated, theoretical picture of the Basin and Range Province's geological evolution.

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Article

In a Future Ocean, It Takes a Thick Skin

The next time you pry a clamshell or crack a lobster claw for dinner, pay a small homage. For many ocean creatures with hard shells, growing that armor is taking more effort than ever. Find out why.

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Article

Article: Carbon Sinks and Carbon Bombs

Scott Goetz has studied the boreal forest of Alaska for more than two decades, but year by year, the landscape is becoming less familiar to him. See how climate change is affecting the forest — and how the forest, in turn, may be influencing climate.

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Article

Article: Follow the Magma

In 1669, the fastest and largest lava flow documented for Mount Etna on the island of Sicily killed most of Catania's 20,000 residents and destroyed much of the city. Why are scientists now watching Etna more than any other volcano in Europe? Find out.

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Article

The Ice Plant Cometh

During a July 2004 project to drill an ice core from the top of Peru's Andes Mountain, the lead researcher took a detour… and made a discovery with profound implications. Learn more.

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