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How Black Holes Work
science.howstuffworks.com/dictionary/astronomy-terms/black-hole.htm
A black hole occurs when a massive star dies -- its enormous mass implodes and becomes so heavy that it bends space. So how do astronomers detect something that they can't see?
How Solar Sails Work
science.howstuffworks.com/solar-sail.htm
What is a solar sail? How can you use sunlight to move a spacecraft in outer space? In this article, HowStuffWorks will show you how solar sail technology works, take an in-depth look at the Cosmos-1 mission and find out what solar-sails mean for future space travel.
How Weightlessness Works
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As the International Space Station astronauts return to Earth after a three-month stay, learn about the effects of weightlessness on the body.
How Zero-gravity Flights Work
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Zero gravity flights are used to simulate a zero gravity environment for astronauts in training. Find out how zero gravity flights simulate weightlessness.
10 Surprising Facts About Astronaut Training
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NASA astronauts have to undergo serious training before becoming approved for a trip to space. But some of that training is certainly not what you'd expect.
What If an Asteroid Hit Earth?
science.howstuffworks.com/nature/natural-disasters/asteroid-hits-earth.htm
There are obvious craters on Earth (and the moon) that are evidence of a long history of massive objects hitting planet Earth. But what would happen if an asteroid hit Earth today?
How Astronauts Work
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Astronauts are adventurers and scientists who work in space. Learn who astronauts are and what they do in space and on Earth.
How Telescopes Work
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For centuries, curious observers have probed the heavens with the aid of telescopes. Today, both amateur and professional scopes magnify images in a variety of ways.
How Solar Sail Technology Works
science.howstuffworks.com/solarsail.htm
What is a solar sail? How can you use sunlight to move a spacecraft in outer space? In this article, HowStuffWorks will show you how solar sail technology works, take an in-depth look at the Cosmos-1 mission and find out what solar-sails mean for future space travel.
Ploonets: When Moons Become Planets
science.howstuffworks.com/ploonets.htm
Moons of giant planets outside the solar system may be pushed out of their orbits and begin to circle their stars separately. HowStuffWorks takes a look.