You might think you're dealing with a human, but hold its gaze for just a few extra seconds. You see? Those flat, black orbs reveal everything you need to know.
The first Thor movie gave us a dazzling view of Asgard as well as Jotunheim, home of the frost giants — but there was supposed to be a third realm in there: the home of the Rock Trolls. Check out some Rock Troll concept art by artist Wil Rees.
We're in the middle of remake fever, with classic films getting remade at a blinding rate. But sometimes, creators try to hard to put their own stamp on a property — and completely miss what it was actually about. Which movie (or comic, or TV) remake or reboot loses a key point of the original?
Forget UFOs — there are a lot of objects and events in space that are identified, but still completely incomprehensible. From planets in our solar system, to inexplicable energy bursts from across the universe, here are some of the enduring mysteries of the space and time we call home.