Cubesats are miniature satellites that have been used exclusively in low Earth orbit for 15 years. Now, these tiny satellites are growing in mainstream popularity and are being used for interplanetary missions as well. They have even been sent to Mars with the Insight Mission, in hopes of better understanding the red planet, our solar system, and beyond.

We're looking hard, but the numbers aren't stacking up. Is life on other planets really that hard to find? Does it even exist? We have not discovered so much as a signal, so maybe we really are alone in our neck of the galaxy!