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What Is a Van Allen Radiation Belt?

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Van Allen Radiation Belts, two zones encircling the earth in which there are relatively large numbers of high-energy (fast-moving) charged particles.

NASA's 10 Greatest Achievements

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NASA's 10 greatest achievements range from technical feats to displays of human ingenuity. Learn about NASA's 10 greatest achievements.

How are the Voyager spacecraft able to transmit radio messages so far?

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The Voyager spacecraft use 23-watt radios. This is higher than the 3 watts a typical cell phone uses, but in the grand scheme of things it is still a low-power transmitter. The key to receiving the signals is therefore not the power of the radio, but a combination of three other things.

Why do all FM radio stations end in an odd number?

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The band that radio stations use is completely arbitrary. Learn how that relates to the specific frequency that FM stations use, and why all the FM radio stations in the United States end in an odd number?

For the Benefit of All: The NASA Quiz

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The National Aeronautics and Space Administration has been exploring space for more than 50 years. How much do you know about the scientists, engineers, pilots and machines that carried America into space?

How to Use Golf GPS

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Do you want to know how to use golf GPS when you're on the range? Learn how to use golf GPS in this article.

How Spies Work

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Spying is a tense and often deadly way for governments to gather secret information from their enemies. Learn how spies are recruited and how they obtain information.

What Does a Total Solar Eclipse on Earth Look Like From Space?

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What does a total solar eclipse look like from space? Learn more in this HowStuffWorks article.

Mars Has an Actual Lake

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Italian scientists have discovered a lake filled with liquid water under the ice cap at the south pole of Mars.

Why Are There Dozens of Dead Animals Floating in Space?

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Neil Armstrong may have been the first man on the moon, but he wouldn't have gotten there without fruit flies, rhesus monkeys or a dog.

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