View Full Version : when the sun burns out


stephen1992
08-10-07, 04:11 PM
when the sun burns out we wont see for millions of light years i think but iss there a way to tell apart from the obvious observation

Read-Only
08-10-07, 04:21 PM
when the sun burns out we wont see for millions of light years i think but iss there a way to tell apart from the obvious observation

I'm not sure what you are trying to say. LONG before the Sun "burns out", it will turn into a red dwarf and totally scorch all life off the Earth. There won't be anyone here after that to see anything.

So what ARE you trying to say?

stephen1992
08-10-07, 04:25 PM
oh ok sorry i didnt know it would do that

Communist Hamster
08-10-07, 04:30 PM
Plus, the Sun is only 8 light-minutes away from Earth (light takes 8 minutes to travel from the Sun to Earth) so if the Sun stopped shining 'now', we'd have 8 minutes before we realised it.

This is where the concept of 'no uniform simultaneity' comes from, btw.

Oli
08-10-07, 04:30 PM
when the sun burns out we wont see for millions of light years i think
We won't see what for millions of "light years"?
A light year is a measure of distance.
If you mean something along the lines of "we won't see that the sun has burnt out for X years", the light from the sun takes about 8 1/2 minutes to reach us.

stephen1992
08-10-07, 04:40 PM
yh but could u tell it had happen before your 8 minutes were up is wat i meant

Oli
08-10-07, 05:00 PM
yh but could u tell it had happen before your 8 minutes were up is wat i meant

The only information we get from the sun travels at light speed: so the 8 1/2 (or 8 :D) minutes after is the soonest we'd know.
And the soonest we could know.

Klitwo
08-10-07, 06:30 PM
when the sun burns out we wont see for millions of light years i think but iss there a way to tell apart from the obvious observation


In about million years from now, it will start getting pretty hot around here. I wouldn't be planning any vacations in Acapulco at that time. It's hot enough down there already.

http://www.valdosta.edu/phy/astro/pl_shows/bh_2001/bh/page10.html

Orleander
08-10-07, 06:32 PM
The only information we get from the sun travels at light speed: so the 8 1/2 (or 8 :D) minutes after is the soonest we'd know.
And the soonest we could know.

How long could we survive after the sun goes out (if it just happened like a light bulb)
Would we last a week?

cosmictraveler
08-10-07, 07:07 PM
We are going to be fried by the expansion of our sun as it goes into its death throws. We won't ever see the final extinguishment of our sun from this planet or any planets in this solar system.

Klitwo
08-10-07, 07:09 PM
How long could we survive after the sun goes out (if it just happened like a light bulb)
Would we last a week?

Depends. If that event ever happened, it could take weeks, months or even years depending how cold it gets. With the sun out of business, it's going to get very cold, very dark, very fast. However, with a few billion years left before it turns into a White Dwarf, I'm not going to 'sweat' it for now.

Orleander
08-10-07, 07:09 PM
Cosmic, You missed the light bulb part. What if aliens killed it in a split second. How long would we live without our sun.

Klitwo
08-10-07, 07:22 PM
Cosmic, You missed the light bulb part. What if aliens killed it in a split second. How long would we live without our sun.

If aliens killed it (the sun) in a 'split second', then forget about TGIF. However, as long as you have electrical power plants still running, you would last a while. How long for sure? Maybe not as long as a crew on board nuclear subs that are crusing under the ocean.

Janus58
08-10-07, 07:57 PM
LONG before the Sun "burns out", it will turn into a red dwarf and totally scorch all life off the Earth.

I'm sure that this was just a typo on your part, but for the record, the Sun will become a red giant not a red dwarf.

cosmictraveler
08-10-07, 08:06 PM
Cosmic, You missed the light bulb part. What if aliens killed it in a split second. How long would we live without our sun.


It would take a few years befor ALL life was extingushied. there could be some micoscopic organisms that could linger and perhaps some deep water things but as far as the surface, it is done.

Orleander
08-10-07, 08:07 PM
but what if I lived by a volcano?

pencil
08-10-07, 08:16 PM
Genetic modification could modify all sorts of crops to grow in harsh desert-like temperatures or even underground. As for people, we could build deep underground lairs where the temperatures would be suitable.

Perhaps even build deep ocean marinas and bases. I'm sure panic would get the best of everyone though.

Read-Only
08-11-07, 01:58 AM
I'm sure that this was just a typo on your part, but for the record, the Sun will become a red giant not a red dwarf.

Indeed it was, Janus. As I was typing along I suppose the British sci-fi program was in the back of my mind.

Klitwo
08-11-07, 05:41 AM
but what if I lived by a volcano?

Your property value wouldn't be very high, especially if it were an active volcano. However, if you wanted to live by a volcano, might I suggest Yellowstone. The world's largest supervolcano. When it erupts every 600,000 plus years, the world population should decrease a little. Did I say a little? I should have said a lot. Or better yet, try living near TOBA in Sumatra. When it erupted last time (Circa: 73,000B.C.), it really thinned out the world's Neanderthal population big time.

http://tobavolcano.googlepages.com/home