Library of Past Questions
General Astronomy & Astrophysics |
- We no longer answer questions on this topic,
to concentrate our limited resources on questions on space based
astrophysics and closely related areas (see this
page for more explanation).
- Check out the resource links. These are the sites we used to
point to in answering your questions.
- Browse through the library of questions below.
We may have already answered your questions.
- Also try our Ask an Astrophysicist
Search Engine!.
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Are you sure your question is not covered in another,
more specific, page? If you're not sure what our subject
categories are, check our list of
categories with explanations. The answer to your question
may already be on our site, if you only knew where to look!
Library of Past Questions and Answers
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What is interferometry?
- How cold is it in space?
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What units are used to measure distance in astronomy?
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What is a light year?
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What are the ways that distances are measured in astronomy?
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Why do most celestial bodies rotate?
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Do the Laws of Motion apply in space?
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When a star (or light source) is moving away from you, does it emit blue
or red light?
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Can you explain the gravitational potential well?
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What is a plasma?
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What are the four forces of nature?
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How many chemical elements are known to exist?
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How do our eyes see light? Is light a particle or wave?
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Which method is used for actually detecting neutrinos?
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How do you receive email about the latest Astronomical events?
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Are there any astronomy search engines?
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Where can I find children's Astronomy videos and other resources?
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How do I find specific astronomy information on the Internet?
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Can you recommend any good astronomy-related science fair
projects?
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Can you give me a science fair idea that has
to do with gravity or inertia?
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What are the scientific principles behind hot air balloons?
History of Astronomy & Astrophysics
- Why did ancient civilizations
consider astronomy to be important?
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What is the history of astronomy?
What tools did ancient astronomers use?
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Who discovered that the Earth orbits the Sun?
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Who was the first person to prove that the Earth rotates?
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How did they measure planetary and stellar distances in antiquity?
Astronomy, Society & Religion
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Is technology advancing too rapidly to be safe?
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What is the Big Bang? What do you believe?
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What should I tell my daughter about the creation of the Universe?
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Can you interpret an astronomical reference for me?
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