Search Results | astronomical unit
Your search for "astronomical unit" returned 171 results
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?
The Basic Astronomy quiz
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The night sky has fascinated humans throughout history. Even if you're not a science buff in general, we're willing to bet you know a thing or two about astronomy yourself. Find out just how much with our quiz!
How Asteroid Belts Work
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Asteroid belts may tell us how our very solar system came into existence. Learn all about asteroid belts, from their characteristics to what they can teach us.
Explaining the Kilometer (km) and Converting to Miles
science.howstuffworks.com/dictionary/km.htm
The kilometer (km) is a standard unit of measurement used in the metric system. Derived from the French "kilomètre," the unit is used to measure length and distance along a straight path.
How Electromagnetic Propulsion Will Work
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Get a sneak peek (even before NASA scientists) at a new type of spacecraft that could be jolted through space by electromagnets.
How Solar Sails Work
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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.
10 Space Landmarks We'd Like to Visit
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Fling away your Fodor's! Toss your TripAdvisor! We have the only guided tour of outer space you'll need -- a foray into the final frontier so ambitious it will make the Voyager probes' Grand Tours look like daytrips.
Cecilia Helena Payne-Gaposchkin
Payne-Gaposchkin, Cecilia Helena (1900-1979) was a British-born astronomer who became an authority on variable stars (stars that change in brightness) and the structure of the Milky Way Galaxy.
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.
The Great Planetary Conjunction of 2020
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In 2020, Jupiter and Saturn aligned so closely that, from Earth, they looked like they were practically touching. The last time we saw this was in 1226.