If you've seen illustrations or models of the solar system, maybe you noticed that all the planets orbit the sun in more or less the same plane, traveling in the same direction. Earth's gravity has a ...

There are 8 planets in our solar system. The planets orbit the Sun in elliptical trajectories, and they are all different in size, composition, temperature, and characteristics. The planets can be ...

The Sun is an incandescent but benevolent dictator. For billions of years, it's kept our star system well organized through the influence of its powerful gravity. All the planets revolve around it on ...

Professor of Earth, Environmental, and Planetary Sciences, University of Tennessee If you’ve seen illustrations or models of the solar system, maybe you noticed that all the planets orbit the Sun in ...