Search Results | astronomical unit
Your search for "astronomical unit" returned 192 results
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
science.howstuffworks.com/asteroid-belt.htm
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 are astronomers able to measure how far away a star is?
science.howstuffworks.com/question224.htm
It turns out that measuring the distance to a star is an interesting problem! Astronomers have come up with two different techniques to estimate how far away any given star is.
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.
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.
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.
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.