Space exploration is one of our most ambitious yet most expensive endeavors. This should go without saying, but it costs a lot to send something into space. That is why every payload carried aboard shuttles is monitored carefully. However, some of these payloads have contained a lot more than the bare essentials. As you are about to see, we have sent a lot of wacky stuff into space.
Out of all the animals that have been to space, tardigrades are definitely the coolest. These teeny-tiny microscopic critters are the Toyota Hilux of the animal world – they can withstand just about anything. This places them in a category known as extremophiles – organisms that can thrive in harsh environments.