Chief among these is distance; at 1.5 million kilometers, simply getting to L 1 is a much more expensive proposition than any geocentric orbit. The distance also makes radio communications much ...

During the event, the asteroid's geocentric energy will become negative and remain that way for 56.6 days. In Dunn's simulation, the orbit is shown as the red line, and it only circles about 25% ...

Earth's gravity will pull it into its orbit and the asteroid will have negative geocentric energy, meaning it can't escape ...

This geocentric model seemed to explain the movements ... motion happens because Earth is constantly moving in its orbit. As our planet catches up with and passes others, like Mars, they ...