Introductory Astronomy: Parallax, the Parsec, and Distances
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Video lecture that discusses the concept of parallax, the unit of the parsec, and how astronomers can determine the distances to the most nearby stars.
Comments
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Good vid very nice!!!
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Ma se la terra nn si muovesse ? tutti questi calcoli sarebbero senza senso- Provate a pensarci
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Nice try but...
Use "miles" in a scientific video?
Use "pi" for unknown angle? -
what if the star,sun and earth do not for a right angled triangle?.....
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That's truly amazing considering that one arcsecond is 1/3600 of one degree. It really gives further insight to the vastness of the cosmos that such a minute change in apparent position indicates such a huge distance between us and that object.
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I have a question, What if the star is moving ?
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Why would anyone use "pi" as the symbol for an unknown angle???
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Just for fun. . .
Han was wrong!
One cannot make the Kessel Run 'in' 12 parsecs (as a parsec is a unit of distance, not time). It should be: "That's the starship that made the Kessel Run 'of' 12 parsecs, 'in' x amount of time".
No? -
What he failed to tell you was that a parsec is 3.26 light years, meaning that Proxima Centauri is 3.912 light years distant.
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Very helpful! :))
There's one thing I want to know more about.. For example, If I know a star's parallax angle, how can I relate it to a star's RA/Dec change?
at 7:51 he says that the interior angle is the size of the entire shift… so does it mean that, change in RA and parallax angle are directly connected to each other? -
Thank you for this. It is appreciated. I have taken three screen shots of your presentation to use in a class. I am hoping it is okay.
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This is very helpful thank you! ♡
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Very informative video, I would definitely recommend this to anyone that is interested in astronomy, pretty cool.
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nice video!
i`m not a genius, but iget it...
so that`s how you mesure distances whit no measure tape :)) -
Wonderful Thanks! I will definitely share this with my class.
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thank you very much for the explanations and the time you put in for this...it is appreciated. n
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