The chances that your tombstone will read 'Killed by Asteroid' are about the same as they'd be for 'Killed in Airplane Crash.'

Do you realize that if you fall into a black hole, you will see the entire future of the Universe unfold in front of you in a matter of moments and you will emerge into another space-time created by the singularity of the black hole you just fell into?

If Mars formed life, then life on Earth could have been seeded by life on Mars, making every life form on Earth descended from Martians.

Neil deGrasse Tyson Quotes