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Science Section => Science General Discussion => Physics & Cosmology => Topic started by: Munch on June 08, 2017, 08:19:58 PM

Title: Size
Post by: Munch on June 08, 2017, 08:19:58 PM
Since I was a kid, I was always fascinated by things being the biggest of their kind, the biggest gemstone, the biggest man made structure, the biggest planet in our solar system, the biggest insect, so on. Back then there wasn't the wellspring of information we have at ease now, but something about looking into the largest structures in the universe always fills me with a sense of awe just thinking about it.

(http://static5.businessinsider.com/image/54b42ca3eab8ea1d2dc9b87d/crazy-image-shows-how-tiny-earth-is-compared-to-our-sun.jpg)

This is earth as roughly compared to the size of the sun, however, taking that into account, it puts the largest discovered star in comparison, VY canis majoris, at a mass thats just beyond belief.

 (https://www.mbandf.com/medias/parallel-world/2013/Stars/_wysiwyg/canis_majoris2100sol.jpg)

obviously this is based on theory, so not an exact science, but a lot of research goes into determining the quantity of mass times distance when observing stars, so I can believe there are stars to this size out their in the universe.

And then we have examples of the largest recorded galaxy, IC 1101.

(https://pbs.twimg.com/media/B03-Ci_CIAI2MGd.jpg)

theres something so majestic about a galaxy that size when compared to ours, but one to massive it no longer produces new stars, like an aging creature floating along in its twilight years.

 
Title: Re: Size
Post by: aitm on June 08, 2017, 08:23:57 PM
I thought I read somewhere that nearly our entire galaxy can fit inside of that sun.
Title: Re: Size
Post by: PopeyesPappy on June 08, 2017, 10:02:12 PM
I thought I read somewhere that nearly our entire galaxy can fit inside of that sun.

Only out to Jupiter.
Title: Re: Size
Post by: SGOS on June 09, 2017, 09:32:38 AM
It's hard to comprehend that kind of size.
Title: Re: Size
Post by: Baruch on June 09, 2017, 12:36:22 PM
It's hard to comprehend that kind of size.

Hitchhiker's Guide to the Galaxy ... "It is big, really big"
Title: Re: Size
Post by: trdsf on June 09, 2017, 01:09:56 PM
https://www.youtube.com/watch?v=HEheh1BH34Q
Title: Re: Size
Post by: Unbeliever on June 09, 2017, 05:08:22 PM
And then there's Laniakea, our home supercluster - the largest coherent structure in the known universe:


https://www.youtube.com/watch?v=rENyyRwxpHo
Title: Re: Size
Post by: Unbeliever on June 09, 2017, 05:14:45 PM
Also, I heard today on science Friday about a new technique for measuring the mass of single stars - using Einstein's general theory of relativity:

http://www.sciencemag.org/news/2017/06/astronomers-measure-mass-star-thanks-old-tip-einstein
Title: Re: Size
Post by: Cavebear on July 18, 2017, 04:21:21 AM
I thought I read somewhere that nearly our entire galaxy can fit inside of that sun.

A star that size is almost so vague at the surface it almost doesn't have one.