Carl Sagan with the famous message sent on ... Phosphine is also found in the vast, churning gas giants of Jupiter and Saturn. But to explain why it would be present on a rocky planet as small ...

The famed astrophysicist Carl Sagan and former President Jimmy Carter ... in the launch of the Voyager 1 probe, which surveyed Jupiter and Saturn before heading into interstellar space.

Blue Dot, named after Carl Sagan's famous speech about our place ... look at the search for life in the oceans of alien worlds like Jupiter's moon Europa and the Saturnian satellite Enceladus.