If you were one of the many who diligently tuned in to watch NASA's fancy cloud-building canisters deploy from its rocket and create a bunch of colorful wisps in the atmosphere, you were undoubtedly disappointed to learn that nature's own clouds had ruined the party. NASA was forced to postpone the experiment, which is a bummer, but the good news is that it's back on track for tonight, and you can still watch it live.