How Many Stars Are There?

ERROR IN VIDEO – There are up to 200 BILLION stars in our galaxy…not 200 million.

How many stars are there in the universe? This question leads Hank to a couple other questions – How many stars can we see from Earth? How many stars are there in our galaxy? – but the answer to the original question proves elusive.

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References:
http://www.universetoday.com/22380/how-many-stars-are-in-the-milky-way/
http://en.wikipedia.org/wiki/Messier_81
http://apod.nasa.gov/apod/image/0709/milkywayband_gleason.jpg
http://www.universetoday.com/24328/how-many-stars/