the news The next What If? video, "What if a glass of water were LITERALLY half empty?" is up on YouTube now! Interplanetary Cessna What would happen if you tried to fly a normal Earth airplane above different Solar System bodies? —Glen Chiacchieri Here’s our aircraft: The Cessna 172 Skyhawk, probably the most common plane in the world. Here’s our pilot: Here’s what happens when the aircraft is la