How big is the Earth?!

I really have never been that interested in astronomy but this video was actually really really good. +rep :)

That was a brilliant video - thanks for posting David. +Rep

Space is probably the most incredible and interesting thing to think about.

Looks like a video that was posted here a few months ago. Absolutely brilliant and we just don't realise how small we are in the "world".. :)

http://www.youtube.com/watch?v=17jymDn0W6U

Wow. that last one was absolutely gigantic compared to Earth :o

but if the last start is so big how come we cannot see it? it can't be that far away or else we wouldn't have found it in the first place

great vid nevertheless

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Originally Posted by Moh

How do they even measure the size of them when they're light years away?

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I = AM

image size = actual size X magnification. basically the same principle, though i bet they use a slightly more complicated version. So they would rearrange to get A = I/M


anyway, it does put things into perspective, and makes it very hard to believe we are the only ones

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Originally Posted by kk.

I = AM

image size = actual size X magnification. basically the same principle, though i bet they use a slightly more complicated version. So they would rearrange to get A = I/M


anyway, it does put things into perspective, and makes it very hard to believe we are the only ones

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Yes it does! I think it's next to impossible that we're the only ones.

Very interesting video. +Rep

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Originally Posted by Special

but if the last start is so big how come we cannot see it? it can't be that far away or else we wouldn't have found it in the first place

great vid nevertheless

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I suppose the same reason we can't see any of the rest of the planets (except the odd event when you can see Mars or another planet). That star is just far to far away for us to see it. Just looked it up, this giant star is 4,900 LIGHT YEARS away from earth!

Crikey that's very interesting indeed, the scale is quite good, but how could they forget Uranus! :L

And I thought our Sun was big...

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Originally Posted by Rixion

Crikey that's very interesting indeed, the scale is quite good, but how could they forget Uranus! :L

And I thought our Sun was big...

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Ikr, I found this picture of it compared to our sun. http://upload.wikimedia.org/wikipedi...is-majoris.jpg