A Galaxy Infected with Life?
Can life hop from planet to planet like a virus in an epidemic? Can we even detect whether this has happened?
Creating a Cosmic Inventory of Rocky Planets
Combining cosmology, galaxy formation, and exoplanet science together, can we calculate the number of rocky planets in the entire universe?
Effects on Habitability from Nearby Neighboring Planets
Planets can live very close to one another, but are planetary neighbors destructive to life, or might they help it get started in the first place?