sunshine

catefrances

just had a thought whilst reading about this new movie, sunshine

if the sun dies, does that mean our solar system will collapse in on itself?

korby

well. it certainly wont b very warm anymore ...?

catefrances

korby wrote:

well. it certainly wont b very warm anymore ...?

thats for sure. i'll have to buy me some mittens. but i was thinking if the sun ceases to exist as a source of energy then won't that mess with the orbit and gravity in some way?

korby

well. we may lose our light too. although we can still admire the stars

catefrances

korby wrote:

well. we may lose our light too. although we can still admire the stars

somehow i don't think light will matter if the solar system has collapsed.

somebodyelsessky2020

if the sun ever dies everything on earth will too..pretty simple.

korby

well that just sucks.

catefrances

somebodyelse'ssky wrote:

if the sun ever dies everything on earth will too..pretty simple.

that was not my question.
i am aware of the implications for life on earth. i was just curious as to what people would think would happen to the universe.

somebodyelsessky2020

catefrances wrote:

that was not my question.
i am aware of the implications for life on earth. i was just curious as to what people would think would happen to the universe.

ohh ok..i don't know. geez that's a thoughy.. after all i'm no scientist or anything

catefrances

somebodyelse'ssky wrote:

ohh ok..i don't know. geez that's a thoughy.. after all i'm no scientist or anything

i'm no scientist either, just curious.

hippiemom

I'm no scientist either, but I really like the pictures at the Hubble Telescope website, so I look there often, and I think that we've observed both the birth and death of stars, it happens all the time ... and our sun is a very small star, so my guess is that the implications for the universe wouldn't amount to much. Our solar system would obviously be done though, our planets would go hurtling through space without the sun's gravity to keep them in orbit.

catefrances

hippiemom wrote:

I'm no scientist either, but I really like the pictures at the Hubble Telescope website, so I look there often, and I think that we've observed both the birth and death of stars, it happens all the time ... and our sun is a very small star, so my guess is that the implications for the universe wouldn't amount to much. Our solar system would obviously be done though, our planets would go hurtling through space without the sun's gravity to keep them in orbit.

yes, by universe i meant solar system cause when i say universe i actually do mean solar system, rightly or wrongly.
i never thought of it that way mom. it never occurred to me that the planets would just float off into space until they got pulled into another sun's orbit or whatever.

hippiemom

catefrances wrote:

yes, by universe i meant solar system cause when i say universe i actually do mean solar system, rightly or wrongly.
i never thought of it that way mom. it never occurred to me that the planets would just float off into space until they got pulled into another sun's orbit or whatever.

That much I know for sure because I saw it on Nova (that's a PBS science show) They explained the whole thing with Newton's and Einstein's theories, and I forget all of that, but I remember the pictures of the planets sailing away.

catefrances

hippiemom wrote:

That much I know for sure because I saw it on Nova (that's a PBS science show) They explained the whole thing with Newton's and Einstein's theories, and I forget all of that, but I remember the pictures of the planets sailing away.

cool.

i think i saw too many disaster films in the 70s, so i always go for the more dramatic.

somebodyelsessky2020

I was all in a good mood..and now this thread! dammit why does life have to be so complicated? Heaven better be a stress free environment that's all i can say!!

norm

catefrances wrote:

cool.

i think i saw too many disaster films in the 70s, so i always go for the more dramatic.

http://www.stevemcqueen.nl/img/dvd/the_towering_inferno.jpg

korby

do people really care ?

the powers that be want to use it to control or for weapons

and other avoid it. afraid of exposure or being burned.

me, im a sunworshipper. im gonna bask in it this summer

Marie Curie

catefrances wrote:

that was not my question.
i am aware of the implications for life on earth. i was just curious as to what people would think would happen to the universe.

The sun will eventually die and nothing is going to happen to the universe

Ahnimus

I don't invest much belief in cosmology.

Supernovas happen all the time and the universe hasn't collapsed.

We would be dead though.

rigneyclan

catefrances wrote:

just had a thought whilst reading about this new movie, sunshine

if the sun dies, does that mean our universe will collapse in on itself?

Nothing will happen to the Universe. Stars die all the time, Supernovas are proof of this.

As for the life span of the sun,.. In 5 billion years, the Sun will become a red giant, its outter surface will expand to about where Mars' orbit is now. Then, sometime later, the Sun will become a White Dwarf and eventually die out.

korby

i just hope I m long gone before that shit happens. I dont want to see the sun consume the world and destroy it.

ill try not think about it when i am on the beach this summer

harmless_little_f***

Great movie!

Binaural

I think the deal is that once the sun dies out and expands to become a red giant everything on Earth will be burnt to a cinder, hen like someone says, it becomes a white dwarf.
Ive only got a rough explanation from a book I read a few months ago, anyone know how to actually explain this?

catefrances

rigneyclan wrote:

Nothing will happen to the Universe. Stars die all the time, Supernovas are proof of this.

As for the life span of the sun,.. In 5 billion years, the Sun will become a red giant, its outter surface will expand to about where Mars' orbit is now. Then, sometime later, the Sun will become a White Dwarf and eventually die out.

perhaps. but i'm talking about OUR solar system. what impact will that have on OUR solar system. i know stars die all the time but they are not OUR sun. so what happened to the sytems surrounding those extinct stars?

i already clarified back in post # 12 that when i said universe i meant solar system.

Jeanwah

From watching scientific shows, I figured that the sun would eventually collapse within itself like a black hole and swallow the planets in our solor system with it. Or it could die out, I guess. I'm wondering if a star dying out and collapsing is the same thing?

decides2dream

Jeanwah wrote:

From watching scientific shows, I figured that the sun would eventually collapse within itself like a black hole and swallow the planets in our solor system with it. Or it could die out, I guess. I'm wondering if a star dying out and collapsing is the same thing?

i'm no scientist...but i don't think so? if the sun dies, i ythink it simply releases the planet' from it's gravitational pull whereas if it becomes a black hole it's gravitational force gets stronger and thus would pull in and consume the planets, so definitely different scenarios. all interesting nonetheless...and most definitely, n the scheme of things...helps put into perspective my utter insignifacance in the whole scheme of things. in fact, i am unworthy of even a mention in the scheme of things. i take comfort in that, and it scares me some too....depending on my mood.

korby

what if the sun turned blue ?

catefrances

korby wrote:

what if the sun turned blue ?

that would be pretty. and hopefully it would be easier on the eyes than the white light is at the moment.

scw156

from what I remember learning in college:

if the sun were to just disappear (just poof, gone.) mysteriously, then the planets would just go flying off into space because there is no suns gravity holding them in orbit.

in reality, the sun will eventually expand to become a red giant and burn the shit out of the inner 4 planets or so then eventually become a while dwarf.

I'm pretty sure it wont ever become a supernova or possibly a black hole because our sun is a type G star and I don't believe they have enough mass to become supernova... (and then no blackhole after the BOOM)

also, here are some really good pictures I found on wikipedia when i searched "supernova"

http://upload.wikimedia.org/wikipedia/commons/d/d4/Keplers_supernova.jpg
http://upload.wikimedia.org/wikipedia/commons/0/00/Crab_Nebula.jpg
http://upload.wikimedia.org/wikipedia/commons/7/76/STScl-2005-15.png

ClimberInOz

Our sun is currently converting its supplies of hydrogen to helium. When the hydrogen supply within the core is extinguished the core begins to shrink as a result of the lack of reactions occurring. This shrinkage, however, generates heat that eventually causes the hydrogen in the outer layers of the star to convert to helium. This helium moves to the core, increasing the gravitational shrinkage of the core, which in turn increases the heat at the core up to 100 million K. This is sufficient to cause an entirely new set of reactions that convert helium to the next stable element, carbon. When the helium supply is extinguished within the core, it once again begins to shrink. The temperature begins to rise once again, but is insufficient to cause the next thermonuclear reaction, (carbon to oxygen). Instead the heat causes one final massive thermonuclear reaction in the outer layers and the surface is literally exploded off.

The outer layers that have been blown off form a ring like planetary nebula, while the core becomes a white dwarf. White dwarfs are small, (about the same size as the earth), although their mass is about 10 000 times heavier. One cubic centimeter of a white dwarf would weigh a tonne. The surface temperature is about 10 million K, although the core temperature is much cooler at about 1 million K. This temperature is insufficient to cause any fusion reactions to take place, so the star slowly radiates away its energy over billions of years eventually becoming merely a black cinder of degenerative matter, (crushed matter where the electrons have been forced closer to the atomic nuclei, and therefore greatly resist further compression).

harmless_little_f***

scw156 wrote:

from what I remember learning in college:

if the sun were to just disappear (just poof, gone.) mysteriously, then the planets would just go flying off into space because there is no suns gravity holding them in orbit.

in reality, the sun will eventually expand to become a red giant and burn the shit out of the inner 4 planets or so then eventually become a while dwarf.

I'm pretty sure it wont ever become a supernova or possibly a black hole because our sun is a type G star and I don't believe they have enough mass to become supernova... (and then no blackhole after the BOOM)

also, here are some really good pictures I found on wikipedia when i searched "supernova"

http://upload.wikimedia.org/wikipedia/commons/d/d4/Keplers_supernova.jpg
http://upload.wikimedia.org/wikipedia/commons/0/00/Crab_Nebula.jpg
http://upload.wikimedia.org/wikipedia/commons/7/76/STScl-2005-15.png

Those are great pictures, but my computer told me I had to set my monitor to no more than 2.9% brightness to view them, or I'd kill myself.