With the occasional nod to his greatest achievements, his exploration of the cosmos is at times a challenging, daunting experience – but it’s rewarding ...

Suppose humanity was faced with an extinction-level event. Not just high odds, but certain-sure. A nearby supernova will ...

Once upon a time, science communication was a niche hobby, reserved for the rare few who could translate lab jargon into ...

The multi-faceted band's new tune " Try Not to Die " played a few songs into the set, poetically employing Carl Sagan's famous quote about Voyager 1 's " Pale Blue Dot " portrait of Earth as a tiny ...

The famed astrophysicist Carl Sagan and former President Jimmy Carter shared a fundamental understanding about the fragility of our planet and the futility of our wars in a “vast and awesome ...

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.

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 ...

63OK," Carl Sagan and George Mullen wrote, turning their attention to the topic in 1972. "Had we used 50 percent for ΔL, the freezing point of seawater would have been reached about 1.4 aeons ago ...