Its dense, carbon dioxide dominated atmosphere results in a runaway greenhouse effect.
This planet was mapped by the Magellan probe. This planet had a notable transition of the sun in 2004 and is scheduled to make another in 2012. When it appears, it is this brightest object in the night sky. Its dense, carbon dioxide dominated atmosphere results in a runaway greenhouse effect. For 10 points, name this planet named after the Roman goddess of love, the second planet from the sun.
This planet was mapped by the Magellan probe. This planet had a notable transition of the sun in 2004 and is scheduled to make another in 2012.
Venus