Imagine standing on the edge of a cliff, ready to jump. If you jump with just enough speed, you'll fall straight down to the ground. But if you jump with more speed, you'll start to curve away from the Earth, as if you were being pulled back by a giant invisible force. This is exactly what happens to objects in orbit. They are constantly falling towards the Earth, but they … [Read more...] about Orbiting: A perpetual fall that never reaches the ground