It is no secret that Earth has the ability to sustain life. We have the best technology when it comes to figuring out if any other planet has the proper conditions to sustain life as well. Sadly, no other planets have proven to be able to do so. This is why it is so incredibly important for us to take care of the planet that we all call home. The absolute furthest that humans have been able to travel is the moon, and no other planet can sustain us should Earth ever be destroyed.