Carl Sagan

Ted Koppel hosts an 80-minute panel discussion airing immediately after the ABC TV-movie The Day After — Sagan's first major TV deployment of the 'nuclear winter' framing, alongside Kissinger, McNamara, Buckley, Wiesel, and Scowcroft.

Sagan announcing the correction to the initially-released blue-sky Mars images — the day after Viking 1 landed, revealing the Martian sky was actually pink.

Sagan's Tonight Show appearance with Johnny Carson — critiquing Star Wars' 'human chauvinism' and discussing SETI.

CBC Newsmagazine interview segment — Sagan argues that the processes that produced intelligent life on Earth could occur elsewhere in the universe.

Excerpt from the BBC science documentary on SETI — the earliest extant TV footage of Sagan, then a young astronomer at the Smithsonian Astrophysical Observatory and Harvard.