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 ...

Carl Sagan, the astronomer ... What for you is time? Sagan: Ever since St. Augustine, people have wrestled with this, and there are all sorts of things it isn't. It isn't a flow of something ...

Carl Sagan had a bone-chilling prediction about America in 1995. A passage from his book, The Demon-Haunted World, is now trending online a day after Donald Trump’s presidential inauguration.

The Carl Sagan Center for Research (CSC) brings together all the scientific research at the SETI Institute. Home to more than 75 scientists, the CSC conducts grant-funded research across nearly all ...

The famed astrophysicist Carl Sagan and former President Jimmy Carter ... every “superstar,” every “supreme leader,” every saint and sinner in the history of our species lived there ...

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 ...

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 ...