Man... that video is awesome, beautiful, amazing, terrifying... unfortunately my english vocabulary ends here... or i could keep praising it over and over...
I dont think the world will exist until 2079... im sure it will ends before it... but if it does not, then i hope to be alive (ill be 97 yrs old), just to witness it all...
I did find a video who shows better the part after the colision of the comet with the earth... its beautiful and awesome too...
[YOUTUBE]BOkC0xh-cUg[/YOUTUBE]