Another How Big Is The Universe Video

[joggerjayne]

Quite a good one.

http://www.guardian.co.uk/science/video/2013/feb/11/how-big-universe-sand-video1

[Noth43]

Em, whilst I agree, I'd rather not dwell to long on the futility and pointlessness of it all, I'm depressed enough.

[emmie]

not so much futile, after all we are still here, but when you look out at the night sky it just seems so vast, unreachable, quite magnificent too

[Old_Geezer]

Ooh, it is so big, so absolutely huge, we're all really impressed down here, I can tell you.

[joggerjayne]

OG gets best answer for reminding me of that really funny sketch.

[LazyGun]

bit more than 40 million years, noodle - more like approx. 5 billion years, at which time it is predicted that Sol we become a red dwarf.

Some of the numbers associated with the Sun are staggering;
"The Sun is about halfway through its main-sequence stage, during which nuclear fusion reactions in its core fuse hydrogen into helium. Each second, more than four million tonnes of matter are converted into energy within the Sun's core, producing neutrinos and solar radiation. At this rate, the Sun has so far converted around 100 Earth-masses of matter into energy. The Sun will spend a total of approximately 10 billion years as a main-sequence star"

4 million tonnes of matter per second converted to energy, and it has been burning at that rate for around 4.5 billion years, and will be burning mass at that same rate for another 5 billion!! Gives you a real sense of the sheer immensity of the Sun :)

[LazyGun]

Oh. and nice link jayne :)

[joggerjayne]

:0)

[emmie]

i couldn't get the link to work for some reason, so googled it on youtube.

[naomi24]

Good one Jayne.