text: Other interests Carson, an amateur astronomer, was a close friend of astronomer Carl Sagan, who often appeared on The Tonight Show. The unique way Sagan had of saying certain words, like "billions" of stars, would lead Carson to ribbing his friend, saying "BILL-ions and BILL-ions". Carson was the first person to contact Sagan's wife Ann Druyan with condolences when the scientist died in 1996. He owned several telescopes, including a top-of-the-line unit. In 1981, the minor planet 1981 EM4 was named in his honor, 3252 Johnny. That year, a star was also nicknamed after Carson.
  Carson was an amateur drummer and was shown on a 1979 segment of 60 Minutes practicing at home on a drum set given to him by his close friend Buddy Rich, who was the jazz musician with the most appearances on The Tonight Show. Gore Vidal, another frequent Tonight Show guest and friend, wrote about Carson's personality in his 2006 memoir.
  Carson was an avid tennis player. When he sold a Malibu house to John McEnroe and Tatum O'Neal, the escrow terms required McEnroe to give Johnny six tennis lessons. Carson's primary tennis teacher was Bob Trapenberg, who taught him for some time, and traveled with him to Wimbledon.
  Carson regularly traveled to Tanzania during his retirement and learned Swahili.
  Carson was also a private pilot; his flight logbook and jacket were donated after his death to the Experimental Aircraft Association in Oshkosh, Wisconsin.
  Final years, death and tributes