The folks at TV Guide are working up a list of the 60 greatest sci-fi shows in history — and their rankings might surprise you.

The full list of all 60 shows will be unveiled in an upcoming issue, though Ain’t It Cool News has gone ahead and spilled the Top 10. On the top of the heap? Star Trek/Star Trek: The Next Generation, which rode its cutting-edge sci-fi morality tales into history.

The classic, original version of The Twilight Zone was a close second, with Ron Moore’s Battlestar Galactica reboot, The X-Files and Lost rounding out the top five. It’s hard to argue that any of these shows don’t deserve a spot on the list, but the order is sure to spur some lively debate.

Check out the full Top 10 below:

Star Trek/Star Trek: The Next Generation The Twilight Zone (1959-1964) Battlestar Galactica (2004-2009) The X-Files Lost Doctor Who Buffy The Vampire Slayer The Walking Dead The Prisoner Game of Thrones

You’d think Doctor Who might be higher, but it's hard to argue with what’s above it. Plus, newcomers like The Walking Dead and Game of Thrones earned a spot pretty quickly — it’ll be interesting to see if these shows have the same staying power as their older counterparts.

So what would rank as your Top 10? What order would you put these in?

(Ain’t It Cool News via TV Guide)