Despite the ongoing work by Breakthrough Listen, NASA's Transiting Exoplanet Survey Satellite (TESS) and research into the detection of promising biosignatures and technosignatures, there's no reason to think 2020 would be the year for discovery, said Steven Dick, a recognized astrobiology scholar and writer of the award-winning book "Astrobiology, Discovery, and Societal Impact" (Cambridge University Press, 2018).