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Old 04-17-2008, 10:02 PM   #1
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Largest known star in the universe

http://www.techdo.com/images/largest-know-star.htm

Give this a few seconds...it goes on for about a minute. Pretty cool though.
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Old 04-17-2008, 10:44 PM   #2
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I've been fascinated by astronomy for a very long time. Hypergiant stars are quite an amazing feat of science.
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Old 04-17-2008, 10:52 PM   #3
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I had no idea stars were THAT big!!!
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Old 04-17-2008, 11:05 PM   #4
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I'm also fascinated by neutron stars, which can pack more matter than the entire Sun (or two or three...) into a sphere with a 20 mile radius or so.

If only the singularity of the black hole was visible, I'm sure I'd be fascinated by that too.
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Old 04-18-2008, 06:06 AM   #5
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Doesn't have to be visible to understand it.
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Old 04-18-2008, 06:37 AM   #6
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Have you read any of the ways in which people hypothesise the universe will die melon?? how do you think? It's pretty scary yet fascinatiing stuff.
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Old 04-18-2008, 07:32 AM   #7
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I'll field that one

Infinite expansion tending to heat death, a pointless end to a pointless universe

Luckily I will have long ceased to exist so it is of little consequence to me at the moment, that view may change if that future yields benefits today.
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Old 04-18-2008, 07:56 AM   #8
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I'd read about Heat Death, there's a few others however.

How do we know that heat death won't happen tomorrow however? Will it get to a point where it can expand no longer and start contract to the point where it returns to the instance before the big bang (big crunch)?

So interesting....

Do you believe in a parallel universe? and what is purgatory?
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Old 04-18-2008, 08:06 AM   #9
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The universe is expanding, we detect that the radiation from stars in other galaxies has been stretched out during their transit through space and that stretching is proportional to distance, from that redshift (and the cosmic background microwave radiation) the big bang theory is supported. Given that the evidence points to an accelerating rate of expansion and that the ammount of matter is too little to overcome this and recollapse the universe it follows that eventually it will be spread thin, matter will break down to energy and black holes will evaporate (over massively long time scales). This state of absolute entropy is not going to happen tomorrow.

I think that parallel universes are an interesting proposition, they are introduced as one interpretation of quantum mechanics and also seem to factor into physics hypothesis such as string "theory"; I would not believe in them until a good many qualified people agree on the basis of strong evidence, at the moment it seems a consequence of some of the models and the existence is both untested and apparently untestable.

My understanding is that purgatory is some sort of state ones eternal soul must exist in without any stimulation for crimes against God until you can be let into heaven. I don't have to worry about it because I deny the holy spirit and am going straight to hell without chance of reprieve.
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Old 04-18-2008, 08:25 AM   #10
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Quote:
Originally posted by A_Wanderer
Doesn't have to be visible to understand it.
Oh I understand. I just want to see it!
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Old 04-18-2008, 12:02 PM   #11
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Sadly, VY Canis Majoris won't be around much longer (well, relatively, in astronomical terms), stars that big are completely unstable because they lose mass at such a high rate.

Hopefully it will explode (although it will more likely collapse into a neutron star or a black hole), now that would be cool. Hypernova
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