Bowie was right; there really is a "spider" from Mars.
Learn more about these fascinating arthropods as scientists continue to make amazing discoveries about spiders.
Like the white-armored and -helmeted Stormtroopers from "Star Wars," these spiders are tough to tell apart.
What's the largest spider? The fastest? The weirdest? This list has all of your arachnid records covered.
There's a whole range of reasons you don't want to be bitten by a black widow spider, but you probably wouldn't think that losing the ability to pee is one of them.