[youtube]http://www.youtube.com/watch?v=PtdcdxvNI1o[/youtube] [twitter]https://twitter.com/neiltyson/status/239474562662793217[/twitter] [twitter]https://twitter.com/edyong209/status/239464563584684032[/twitter] [twitter]https://twitter.com/ProfBrianCox/status/239475859726139393[/twitter]