Long ago, some people doubted a rocket could function in space. A New York Times editor ridiculed the first famous rocket scientist for suggesting a trip to the moon. After reporting for many years on "further investigation and experimentation", the newspaper admitted it was wrong. Continue reading →
¡SkyCaramba! Weekly astronomy blog for the week ending July 19, 2014
It’s hard to believe there was a time when some people doubted any object could maneuver in space. Only science fiction characters traveled to other planets. Even sending a machine above the atmosphere to do any work seemed imaginative. Some people thought that if humans ever succeeded in putting objects in space, those objects would travel along paths determined by external forces and the laws of physics. They were sure there was no way to steer a spacecraft in the vacuum of space.
Isaac Newton understood that for every action there is an equal and opposite reaction. Push away the water with your palms in a swimming pool or bath tub. Even though you move the water, it feels like the water is trying to push back. Indeed, it is! That makes it possible to swim in deep enough water.