Description: On January 24, 1925, for the first time in over a century, a total solar eclipse would be visible across the northern part of the United States. How scientists used a dirigible to observe the phenomenon.
Description: Astrophysicist Dr. Nancy Remage Evans, formerly of the Smithsonian Astrophysical Observatory, was a major contributor to the construction of the Galactic Cepheid Database. She has made observations with the IUE, HST, Chandra, Spitzer, FUSE, WIRE, MOST, and XMM satellites. #Groundbreaker
Description: The Smithsonian National Zoo, Conservation Biology Institute's Chief Veterinarian, Dr. Copper Aitken-Palmer, specializes in giant panda reproduction, health, and conservation. #Groundbreaker
Description: Physicist Dr. Stella S.R. Offner, Smithsonian Astrophysical Observatory, uses computer simulations to understand how stars form. She is also a WorldWide Telescope Ambassador. #Groundbreaker