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Pluto Is Just One of Millions of Objects in the Kuiper Belt
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The Kuiper Belt is a ring around the sun that's home to millions of comets, moons, dwarf planets and other celestial objects. How did they get there?
Saturn Has Giant Rings and a Moon Full of Space Lakes
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Saturn is the sixth planet from the sun and the second-largest planet in the solar system. This gas giant has more rings and moons than any other planet.
How Space Stations Work
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Space stations allow astronauts to live and work in Earth orbit. Learn about space stations and how space stations work in this article.
How Spacewalks Work
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When astronauts talk moonwalking, they don't mean the Michael Jackson dance move. Spacewalks take an entire day of preparation -- and a 240-pound space suit.
Which Planets Are Considered 'Earth-like' and Why?
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Exoplanets are planets that orbit stars other than our sun. Read about exoplanets and find out how scientists are searching for exoplanets with life.
How Solar Aircraft Work
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Solar aircraft could drastically cut down on fuel consumption. Visit HowStuffWorks to learn about solar aircraft.
Famous Black Engineers Throughout History
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These African American men and women were trailblazers, and in some cases, business leaders in the field of engineering.
What's an Accretion Disk?
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Accretion disks are one way that we can spot stars and even black holes. Learn more about accretion disks at HowStuffWorks.
Jupiter: Anatomy of a Gas Giant
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Jupiter is the largest planet in the solar system. Big as this gas giant is though, next to the sun, it's still small.
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.