03/06/2007 at 04:45 PM EST
Former boy-bander and aspiring cosmonaut Lance Bass is adding a new title to his résumé: author.
The onetime 'N Sync heartthrob, 27, plans to reveal "all about his life, his music and his sexuality" in a memoir, Out of Sync
, his publisher, Simon Spotlight Entertainment (an imprint of Simon & Schuster), announced Wednesday.
The book will hit stores in October.
In it, Bass will tell readers about his childhood in small-town Mississippi, his experiences as a member of the hugely popular boy band (which started with a phone call from Justin Timberlake when Bass was 16), and, in 2002, his four months in Russia training to be a cosmonaut on a space mission (though he was forced to drop out because of a lack of funds).
He will also talk about his life as a gay man, including his struggle to keep his sexuality hidden from fans and his decision to come out of the closet
on the cover of PEOPLE in July.