Galaxy Quote by Neil deGrasse Tyson

“For the first billion years, the universe continued to expand and cool as matter gravitated into the massive concentrations we call galaxies. Nearly a…

— Neil deGrasse Tyson

“The Sun contains about a thousand times more mass than Jupiter. If it were cold, gravity would squeeze it a million times denser than…

— Martin Rees

“The sun is a mass of incandescent gas: its core is a gigantic nuclear furnace where hydrogen is built into helium at a temperature…

— Robert H. Baker

“It can be said that we are all “star dust,” the product of heavy element generation within previous generations of stars.”

— Dale A. Ostlie

We are made of star stuff. For the most part, atoms heavier than hydrogen were created in the interiors of stars and then expelled…

— Carl Sagan

“Our Sun is a second- or third-generation star. All of the rocky and metallic material we stand on, the iron in our blood, the…

— Carl Sagan

“Using the standard model of elementary particles, we know how to follow the course of nuclear reactions in the standard "big bang" theory of…

— Steven Weinberg

Let me mention that not all sun-like stars host planets - perhaps about 30% of them are planet-builders. It's not so easy to form…

— Garik Israelian

In this single galaxy of ours there are eighty-seven thousand million suns. [...] In challenging it, you would be like ants attempting to label…

— Arthur C. Clarke

“Stars form durable structures because they are the result of a negotiated compromise between gravity, which crushes matter together, and the explosive force of…

— David Christian

“The core of a neutron star is so dense that a single spoonful of matter from it would weigh more than 500 billion kilograms.”

— Bill Bryson

55 Cancri is extraordinarily rich in heavy elements and extraordinarily efficient at making planets - much more so than our sun - and those…

— Debra Fischer