Life outside of Earth can be hard to find. It was thought that life could not survive in our solar system outside of Earth. It would be too harsh for any living creature to survive. It is; except for extremophiles.
Lichens showed promising results under Martian conditions. Escherichia coli and Paracoccus denitrificans not only survived, but also grew under high gravity (403,627 times the gravity of Earth) such as those found on large stars.
Life outside of Earth in our solar system may not exist as 4 feet tall, green creatures from movies, but they may exist in places outside of our vision.