Carl Sagan Writes a Letter to 17-Year-Old Neil deGrasse Tyson (1975)

Carl Sagan, the turtle­neck-sport­ing astro­physi­cist from Cor­nell, was the great­est com­mu­ni­ca­tor of sci­ence of his gen­er­a­tion. Not only did he pub­lish hun­dreds of sci­en­tif­ic papers and was instru­men­tal in putting togeth­er that gold­en record on the Voy­ager space­crafts but he also wrote twen­ty crit­i­cal­ly praised best sell­ers on sci­ence, appeared reg­u­lar­ly on the Tonight Show, and even had a catch phrase — “bil­lions and bil­lions.” But Sagan is per­haps best known for his land­mark 1980 series Cos­mos: A Per­son­al Voy­age (watch it here). He took view­ers through a tour of the uni­verse, show­ing them things from the mind-bog­gling big to the infin­i­tes­i­mal­ly small and every­thing in between. The show proved to be a huge hit; close to a half-bil­lion peo­ple tuned in world­wide.

Even before the reboot of Cos­mos pre­miered on FOX in March, Neil deGrasse Tyson — who hosts the show — was already seen as Sagan’s suc­ces­sor. Not only does he serve as the direc­tor of the Hay­den Plan­e­tar­i­um in New York City and was instru­men­tal in kick­ing Plu­to out of the broth­er­hood of plan­ets, but he also authored numer­ous books, appears reg­u­lar­ly on The Dai­ly Show, and fre­quent­ly hosts AMAs on Red­dit. He’s also one of Amer­i­ca’s most vocal defend­ers of sci­ence at a time, unlike Sagan’s hey­day, when Cre­ation­ism, cli­mate change denial, and anti-vac­ci­na­tion hys­te­ria seem to be mak­ing inroads in our cul­ture.

Any­one who saw Tyson’s heart felt trib­ute to Sagan at the begin­ning of the first episode of Cos­mos knows that Sagan’s influ­ence on his younger coun­ter­part extend­ed much fur­ther than his media appear­ances. It was per­son­al. In 1975, Sagan, who was already famous at that time, was so impressed by Tyson’s col­lege appli­ca­tion that he per­son­al­ly reached out to him, hop­ing to con­vince the high school stu­dent to attend Cor­nell. He even offered to per­son­al­ly show Tyson around his lab.

You can read Sagan’s let­ter, dat­ed Novem­ber 12, 1975, below.

Dear Neil:

Thanks for your let­ter and most inter­est­ing resume. I was espe­cial­ly glad to see that, for a career in astron­o­my, you intend to do your under­grad­u­ate work in physics. In this way, you will acquire the essen­tial tools for a wide range of sub­se­quent astro­nom­i­cal endeav­ors.

I would guess from your resume that your inter­ests in astron­o­my are suf­fi­cient­ly deep and your math­e­mat­i­cal and phys­i­cal back­ground suf­fi­cient­ly strong that we could prob­a­bly engage you in real astro­nom­i­cal research dur­ing your under­grad­u­ate career here, if the pos­si­bil­i­ty inter­ests you. For exam­ple, we hope to be bring­ing back to Itha­ca in late cal­en­dar year 1976 an enor­mous array of Viking data on Mars both from the orbiters and from the lan­ders.

I would be delight­ed to meet with you when you vis­it Itha­ca. Please try and give as much advance notice of the date as you can because my trav­el sched­ule is quite hec­tic right now and I real­ly would like to be in Itha­ca when you drop by.

With all good wish­es,

Carl Sagan

Tyson was deeply moved by Sagan’s kind­ness and sin­cer­i­ty. He did ven­ture out to Itha­ca from the Bronx on a snowy after­noon. As Tyson recalled years lat­er, “I thought to myself, who am I? I’m just some high school kid.” In the end, Sagan’s per­son­al plea wasn’t quite enough to con­vince young Tyson to attend his school. As you can read in his response below, dat­ed April 30, 1976, Tyson decid­ed to go to Har­vard.

Dear Prof. Sagan

Thank you for your offer con­cern­ing the Viking Mis­sions. After long thought and deci­sion mak­ing I have cho­sen to attend Har­vard Uni­ver­si­ty this Sep­tem­ber. I chose it not sim­ply because of its “valu­able” name but because they have a larg­er astron­o­my depart­ment in addi­tion to the Smith­son­ian Astro­phys­i­cal Obser­va­to­ry, so while I am major­ing in physics I will have more sur­round­ing me in the way of on-going research in astron­o­my.

I want to say that I did enjoy meet­ing you and I am very grate­ful for your hos­pi­tal­i­ty and the time you spent with me while at Cor­nell. I will through­out my under­grad­u­ate years keep you informed on any note­wor­thy news con­cern­ing astron­o­my-relat­ed work that I’m involved in. I do plan to apply again for the Viking Intern­ship next sum­mer.

Thanks again

Neil D. Tyson

You can see Tyson talk about his after­noon with Sagan. 40 years lat­er, he still seems incred­u­lous that it hap­pened.

Relat­ed Con­tent:

Carl Sagan Presents Six Lec­tures on Earth, Mars & Our Solar Sys­tem … For Kids (1977)

Carl Sagan Explains Evo­lu­tion in an Eight-Minute Ani­ma­tion

Carl Sagan’s Under­grad Read­ing List: 40 Essen­tial Texts for a Well-Round­ed Thinker

Carl Sagan, Stephen Hawk­ing & Arthur C. Clarke Dis­cuss God, the Uni­verse, and Every­thing Else

Jonathan Crow is a Los Ange­les-based writer and film­mak­er whose work has appeared in Yahoo!, The Hol­ly­wood Reporter, and oth­er pub­li­ca­tions. You can fol­low him at @jonccrow.