Dec 31, 2013 — This New Year, stop to consider the point of it all with this beautiful animation of Carl Sagan's "Pale Blue Dot" meditation on Earth's place in the cosmos.
Nov 27, 2013 — Why, exactly, would aliens who can travel the interstellar void want to physically probe the sex organs of humans, wonders physicist and commentator Marcelo Gleiser as he looks back on the story of Antônio Villas Boas.
Oct 29, 2013 — Carl Sagan, an astronomer with the soul of a poet, liked to remind us that we were all made of "star stuff." It was, without a doubt, one of his most beautiful images. Astrophysicist Adam Frank says it's not just an abstract concept; you can reach out and feel it in the space dirt covering your ride.
Sep 25, 2013 — How far can humans go? Farther than we know. That's one of the lessons we can learn from the Voyager spacecraft, says physicist Marcelo Gleiser. He sees these missions as the embodiment of our hope that we are not alone in the universe, that there may be other beings out there who embrace life and beauty.