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Community Zone => Chatter => Topic started by: Disciple of Sagan on May 17, 2014, 11:36:26 PM

Title: A neat video comparing star sizes
Post by: Disciple of Sagan on May 17, 2014, 11:36:26 PM
http://youtu.be/aCmJmTYS7Zw (http://youtu.be/aCmJmTYS7Zw)

I love the music played, too.
Title: Re: A neat video comparing star sizes
Post by: One Above All on May 18, 2014, 01:18:07 AM
My sun's bigger than yo- Oh... Wait... No it's not...
Why don't they say "Jupiter (Without rings)" like they did with Saturn? It's an insult to those of us who know Jupiter has rings! Just very dark ones...

Seriously though, that last star is huge. Still nothing compared to a quasar, though, which, according to what I've read, can be the size of a galaxy. Also, I recall reading that there were ~300 billion galaxies in the known Universe, rather than "just" 100 billion. What's up with that?
Title: Re: A neat video comparing star sizes
Post by: Disciple of Sagan on May 18, 2014, 10:23:42 AM
I think the video is about 5 years outdated, which might be the reason for lowballing the number of galaxies.
Title: Re: A neat video comparing star sizes
Post by: Graybeard on May 19, 2014, 05:45:31 AM
When my sons were small, I made the planets of the solar system out of polystyrene/styrofoam balls and hung them on the ceiling of their rooms from the bulb outwards. The size of the balls was on one scale and the distances between them on another, otherwise Pluto (which was a planet then) would have been in another county.

At one stage I thought that I might make the sun to the same scale as the planets, but worked out that the model would have taken over most of the house.