During yesterday’s launch, the space shuttle suffered some damage. Some foam tiles, which protect the shuttle from burning up when it enters Earth’s atmosphere, have fallen off or were scuffed. So far, as this news report says, NASA doesn’t know how much damage there is. There are also different options for fixing the damage if it turns out to be a big problem.
Try rubbing your hands together very fast – you can feel the heat building up. This is what happens when a flying object like a spaceship lands on a planet or moon with an atmosphere. The ship rubs against the air in the atmosphere and a LOT of heat is built up. This is because of a force called friction. It’s super-important to have a heat shield so that the ship won’t burn up. A few years ago, the space shuttle Columbia was destroyed because of damage to its heat shield.
This is a very important question because Venus’s atmosphere is full of carbon dioxide, which caused global warming. Could the same thing happen to Earth if we keep putting so much carbon dioxide into OUR atmosphere?
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