Because sci-fi movies usually rely so heavily on a compelling core concept or hook - time travel, a dystopian future, apes on horseback, you know, your typical fare - it's easy to understand why they're so often subject to remakes.
A fantastic concept is a fantastic concept, whether its made in the '40s in black and white or in the modern day with an IMAX camera, making sci-fi an incredibly endurable genre, a trait that lends itself well to frequent reimaginings.
And while remakes and reboots are commonly viewed as quick, lazy cash-grabs (and in some cases, they are) they're never a bad idea. If an older film has a great idea it didn't fully explore - like 1990's Flatliners, which will receive a remake later this year - what's wrong with a new team taking that idea and fleshing it out, expanding upon it and refining it?
There are a bunch of sci-fi remakes in various stages of production, whether stuck in development hell or quickly moving along, so let's take a look at a few you may not know are slated to hit the big-screen soon...