Fun!! Who knew? Buzz Aldrin, 79, says he only has two passions, space exploration and hip-hop. From USA Today:

He's walked on the moon and shot down Russian fighter jets over Korea. And now, to make his career complete, astronaut Buzz Aldrin has become.... a rapper. The Apollo 11 space hero, the second man to set foot on the moon 40 years ago, has recorded a hip-hop video called "Rocket Experience" produced by rap superstars Snoop Dogg and Talib Kweli, and featuring Snoop Dogg, Soulja Boy and Quincy Jones.

"I'm not too good at carrying a tune, but I do have rhythm," says Aldrin, who got the idea from a family member who felt the genre would have a broad reach. Aldrin's ShareSpace Foundation, which promotes science and exploration, is one of three beneficiaries of the song's iTunes sales. "I want kids interested in space. It's their future."

The track takes listeners back to the first lunar landing 40 years ago in July. Aldrin's autobiography (with Ken Abraham) is also being released today and is called Magnificent Desolation: The Long Journey Home From the Moon (Harmony, $27. The book plumbs Aldrin's alcoholism battles after following in Neil Armstrong's big bootsteps.

Buzz Aldrin's birthchart (click to enlarge)