Like a snowplow in overdrive, a supernova shockwave might sweep away any gas clouds in its path.
Neil deGrasse TysonMy popularity does not derive from me pandering to people. People came to me. I don't tell anyone to follow me on Twitter. I don't tell people to like my Facebook page. I don't tell people to fill the venue. I'm offered to people, and then people come.
Neil deGrasse TysonEvidence my 14yr old daughter is geek-literate: In lieu of OK, one might type K while texting. She instead typed "Potassium".
Neil deGrasse TysonThe chunks of comet Shoemaker-Levy 9 were so large, and were moving so fast, that each hit Jupiter with at least the equivalent energy of the dinosaur-killing collision between Earth and an asteroid 65 million years ago. Whatever damage Jupiter sustained, one thing is for sure: it's got no dinosaurs left.
Neil deGrasse Tyson