This past weekend, Nickelodeon aired its annual Kids’ Choice Awards, famous over the years for “sliming” its many celebrity guests and award winners. If you know anything about Nickelodeon and its long history of gameshow television programs, you know that they love slime! However, if you were one of the millions of viewers that watched the Kids’ Choice Awards on Saturday night, you may have noticed that slime went somewhere it had never gone before—to the International Space Station (ISS)! In a collaboration with the ISS U.S. National Laboratory and Nickelodeon, multiple packages of iconic green slime launched to the orbiting laboratory last year…but why? Slime is a non-Newtonian fluid, which is more viscous (resistant to flow) than other fluids like water, making it very interesting to study in…