Why is a Comet’s Head Green and Not a Tail?

The head of a comet often glows green; The queue is mostly absent. This includes Comet LeonardIt made its closest transit to the sun on Monday and is moving away again. A team of scientists has now found a detailed explanation for this multicolored behavior. The molecule responsible for the emerald color is broken down […]

Carolyn Shoemaker, Hunter of Comets and Asteroids, dies at 92

He earned a master’s degree in history and political science from Chico State University (now known as California State University, Chico). Eugene Shoemaker and his brother’s former college roommate, Dr. He met her at her older brother’s wedding, where Shoemaker served as best man. They got married a year later, in 1951. Ms. Shoemaker taught […]