A photo of two huge satellite dishes aimed into space that are used for research in the field of space and astronomy.

The complex sequence of events in a supernova explosion are explained and illustrated.

Jacqueline L. Schroedter, a scientist at Lockheed Missiles and Space Company when this photograph was taken, had earned a B.S. in astronomy from University of Arizona. The company-supplied caption said: "She is active in the...