They Say it Gets Colder
Channel: vlogbrothers
Date: 2020-09-18

The thing to remember here is that finding life on another planet tells us one of very two things...and we will be able to figure out which thing pretty quickly. Either:

1. The life will contain clear signals that it is related to life on Earth, which will tell us that life can and does travel between planets. This would be huge, and it we could even potentially track how long it has been since the two lineages diverged.

2. The life will contain clear signals that it is not related to life on Earth, which would tell us that life can arise relatively easily, and mean that the Universe is filled with living systems. It would also allow us to study a living system that is not our's which is one of the most exciting things I can imagine. 

But again, it's entirely possible that life is rare, and that it only arose once in our solar system. Only one way to find out! GOTTA KEEP LOOKING!!!

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