Invisibility Through Metamaterials (Cloaking)

Essentially, cloaked objects (ideally) appear invisible. This is possible by redirecting the incident light so that it curves half-way around the masked object before escaping and continuing on it's path. So, no light would be scattered, reflected, or absorbed by the cloak.

The science behind this is very real - which is not to say that anyone is anywhere near producing a full-scale prototype. There is still lots of work to do and lots of progress to be made. The predominant method of solving this problem is done with Metamaterials, which are

This is only one way of achieving cloaking. Another method involves the Ewald-Oseen Extinction Theorem.