Here at Ask An Astronomer, you will get customized answers to your space and astronomy questions. Our astronomer has over 25 years of experience and so the answer to your question is just a few clicks away!

Ask An Astronomer makes it easy to get answers to questions like these:

     Amateur Astronomy
  • What's a barlow lens?
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  • Why can't I find Pluto with my telescope?
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  • When will the next Transit of Venus occur?
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  • I've split Mizar A and Mizar B, but I can't split Sirius A and Sirius B. Why?
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     Backyard Astronomy
  • Is the North Star the brightest star in the night sky?
  • Why does the Moon always show the same face to the Earth?
  • I can find the Big Dipper, but I can't find the Little Dipper. Why?
  • What's the name of that bright star in the western sky after sunset?
     College Astronomy
  • What is the Chandrasekhar limit?
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  • Can you help me with the Stefan-Boltzmann Law?
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  • Can you describe four methods for discovering extrasolar planets?
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  • What is the lowest mass that a star can have on the main sequence?
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Asking your question is FREE, but Ask An Astronomer is a paid service and there is a fee associated with getting your answer. However, you get to set the price that you're willing to pay for an acceptable answer. You can even ask a follow-up question so that you will be fully satisfied that your question has been answered completely.
 
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