The greenhouse effect is the phenomenon of planets or moons trapping heat in the atmosphere. Just like an actual greenhouse, thermal energy from the sun gets absorbed by certain gases in the atmosphere and the heat gets trapped. Carbon dioxide, water vapor, and methane are the primary gases that trap this heat. This trapped heat is extremely useful and allows our planet to keep the mild temperatures that we enjoy. Useful, for us, perhaps, but deadly for other places (see your BlogWork).
Research: Describe the atmosphere on Venus and explain why it is the way it is.