Are we alone in the universe?  It seems absurd to think so.  The universe is so very large and so very old.  Surely, in all that time and in all that space, Earth cannot be the only planet to have developed life.  So where is everybody?

For the 2019 A to Z Challenge, my theme was the ongoing search for alien life.  To be absolutely clear, this was not a series on conspiracy theories, U.F.O. sightings, or other pseudoscientific nonsense.  No, this was a series about legitimate scientists doing legitimate scientific research in the field of astrobiology.

So without further ado, here are my posts from the 2019 A to Z Challenge!