This story appears in the August 2017 issue of National Geographic magazine. Carl Sagan spent his childhood immersed in Mars. The future scientist, an avid reader of Edgar Rice Burroughs’s ...

SAGAN: I personally have been captured by the notion of extraterrestrial life, and especially extraterrestrial intelligence from childhood. It swept me up, and I've been involved in sending space ...

Carl Sagan, the astronomer ... wormhole—with flair and a refreshing dash of humor. Sagan was David Duncan Professor of Astronomy and Space Sciences and director of the Laboratory for Planetary ...

Dr. Sagan, a planetary scientist who was recognized for both his ingenious scientific ideas as well as his enormous influence in popularizing space science, was a new member of the SETI Institute’s ...

The Carl Sagan Center for Research (CSC ... set of disciplines ranging from observing and modeling the precursors of life in the depths of outer space to studies of Earth and its rich biological ...