Supernovas are powerful explosions marking the death of massive stars. They spread elements like carbon, calcium, and iron ...

Carl Sagan, the astronomer ... Suppose point B was in orbit around some bright star. The moment you were in the wormhole, near your point of origin A, you would see that star.

Carl Sagan told us that there are more stars in the universe than there are grains of sand on all of the Earth's beaches. At the same time, there are more H 2 O molecules in just 10 drops of water ...

This dispersal seeds new generations of stars and planets. This is what astronomer Carl Sagan meant when he said we're made of "star stuff." The same substances composing our bodies were literally ...

With the occasional nod to his greatest achievements, his exploration of the cosmos is at times a challenging, daunting ...

But looking at our own Sun, a G-type star on its main sequence fusing hydrogen ... 5 aeons ago global temperatures were about 2,63OK," Carl Sagan and George Mullen wrote, turning their attention ...

Astronomer and astrophysicist Frank Drake designed the map, working with fellow astronomer Carl Sagan and artist and ... rapidly spinning remains of dying stars—the leftover cores of supernova ...