Neil deGrasse Tyson

“As the cosmos continues to cool—dropping below a hundred million degrees—protons fuse with protons as well as with neutrons, forming atomic nuclei and hatching a universe in which ninety percent of these nuclei are hydrogen and ten percent are helium, along with trace amounts of deuterium (“heavy” hydrogen), tritium (even heavier hydrogen), and lithium.”


Neil deGrasse Tyson, Astrophysics for People in a Hurry
tags: astro
Read more quotes from Neil deGrasse Tyson


Share this quote:
Twitter icon

Friends Who Liked This Quote


To see what your friends thought of this quote, please sign up!

0 likes
All Members Who Liked This Quote

None yet!


This Quote Is From

Astrophysics for People in a Hurry Astrophysics for People in a Hurry by Neil deGrasse Tyson
50,727 ratings, average rating, 6,574 reviews
Open Preview

Browse By Tag