The following is an excerpt from The Glass Universe: How the Ladies of the Harvard Observatory Took the Measure of the Stars, by Dava Sobel. The monumental work of stellar classification known as the ...

So much is happening in astronomy these days that it’s hard to keep track of the cosmic zoo, much less how each object fits into the overall celestial landscape. Scientists typically organize their ...

DOVER, DE- The legacy of Annie Jump Cannon, a pioneering Dover native who revolutionized stellar classification, is being remembered today. Cannon, born 161 years ago on this day in 1863, made ...