Figure: Carl Sagan (1934--1996) with Viking lander model

Caption: Carl Sagan (1934--1996) on Mars with a Viking lander---OK, he's in a desert with a model of a Viking lander.

Features:

1. Carl Sagan in his heyday was America's most famous astronomer and planetologist---maybe most famous scientist---and the inspirer of a generation of young astronomers---not yours truly actually---but some of yours truly's friends.

2. Sagan had distinct speaking voice, and so he was easily recognized and easily imitated at least in a few supposed pet phrases.

   Note, Sagan denied that he ever said "billions and billions", but he finally gave in and called his last book Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium (1997).

   He certainly said "We are star stuff."---at least approximately---it's on Youtube---see Carl Sagan - We Are Made Of Star Stuff.

   Sagan also popularized the aphorism "Extraordinary claims require extraordinary evidence." though this is just a variation on an earlier famous quote by Marcello Truzzi (1935--2003) which itself is similar to quotes from Pierre-Simon Laplace (1749--1827) and David Hume (1711--1776).

3. When confronted with any problem, you should ask yourself this one question "What would Carl do?" It works for astronomers.

4. Carl Sagan videos (i.e., Carl Sagan (1934--1996) videos):

   1. NASA: Webb Telescope Mission Trailer - Carl Sagan Released Wednesday, February 23, 2022 | 1:25: You need to explicitly click on captioning and the video may NOT load. Short enough for the classroom, only a few seconds are needed to hear the voice of Carl Sagan (1934--1996).