Henrietta Swan Leavitt discovered 2,400 stars.  1,777 stars were in the Magellanic Clouds in Peru.  She discovered four stars and a few asteroids and other space objects.  Her biggest accomplishment was the discovery of the period-luminosity law.   

http://www.twu.edu/dsc/swan_leavittI.htm

Picture Courtesy of the American Association of Variable Star Observers 

TEKS Objective References:

Helpful Web sites:

Space Background Information. This Web site has background information on a variety of space topics. Click here.

Teaching Resources:

Animated Applets of Space Topics. This Web site has a variety of high quality applets that explain space topics visually. Click here.