Making Informed Decisions. With so many options available, selecting the healthiest fast food kidsâ. meal can be difficult. Based on our research findings, listed below are the. most nutritious options available at each restaurant and how substitutions. in the meal affect calories. Use this as a reference guide to make informed.
Size, Mass, and Orbit: With a mean radius of 6371 km and a mass of 5.97Ã1024 kg, Earth is the fifth largest and fifth most-massive planet in the Solar System. In essence, it is the largest terrestrial planet, but is smaller and less massive than any of the gas/ice giants of the Outer Solar System.
The Hill sphere (gravitational sphere of influence) of the Earth is about 1.5 Gm (or 1,500,000 kilometers) in radius. This is the maximum distance at which the Earth's gravitational influence is stronger than the more distant Sun, Moon and planets.