Astrobiologists aren’t necessarily looking for ET – yet. Biology is about everything living, from bacteria to mammals. But if there’s cellular life, it could lead to the evolution of sentient beings. It’s a big if. The presence of single cell eukaryotes doesn’t guarantee development to – more scientists.

https://dtkrippene.com/2016/04/30/astrobiology-a-universe-wired-for-life/