Manmade space crafts have been known to have great dents in them. They are formed by meteors. Meteors are only seen for a second or two. They burn up in Earth's atmosphere. But big ones do not burn up so quickly.
Scientists think that huge meteors caused craters in our moon.
We try to find more about meteors. By Yolanda H. More than 20 years ago, astronaut John Glenn became the first American to orbit the Earth. Glenn and his Mercury spacecraft completed three trips around the world. Among the many tasks Glenn had to perform while in orbit wa to have the first American space experience eating food. His experience will help design a space food system.