“The Sun contains most of the mass of the solar system (99.9 percent) in a ball whose diameter is about 100 times that of the Earth. It is about 150 million kilometers away, and light from it takes eight seconds to reach us.” — Joanne Baker Copy Share Image
“Falling into a black hole would not be pleasant, having your limbs torn asunder and all the while appearing to your friends to be… — Joanne Baker Copy Share Image
“The Sun contains most of the mass of the solar system (99.9 percent) in a ball whose diameter is about 100 times that of… — Joanne Baker Copy Share Image
