For my Ph.D. dissertation, I worked with Vikki Meadows, the principal investigator of the NASA Astrobiology Institute's Virtual Planetary Laboratory. The first project I worked on was about Venus, one of the least habitable planets you could imagine. We observed Venus with the Apache Point Telescope in New Mexico. You can actually see below the cloud deck to the surface of Venus from Earth at certain wavelengths. Most people don’t know this. I made maps of the abundances of different trace gases in the lower atmosphere of Venus for this project. Even though Venus is a hostile environment today, there’s evidence it may once have had oceans of liquid water, so it’s really interesting to think about what happened to Venus and why.