The orbit of the planets around the sun is a result of two opposing forces that are held in perfect balance. Planetary inertia serves to carry the planets on a course that would send them out of the solar system were it not for the gravitational attraction of the sun.Know More
The solar system was created from a vast cloud of spinning dust and gas. As this spinning cloud began to collapse under the weight of its own gravity, it began to flatten out, forming a disk. The sun, the most massive object within the solar system, formed at the center of this gas cloud. Particles within the outer portions of this accretion disk began to collide, creating larger and larger objects until eventually they formed into the planets of the solar system.
The inertia of the planets is derived from the spinning motion of the accretion disk which formed the solar system. This sideways momentum serves to counteract the pull of the sun's gravity, and without it there would be nothing to keep the planets from falling inward and being consumed by the sun. Without an outside force to counteract their inertia, the planets continue to orbit the sun uninterrupted.Learn more in Planets
One year on Neptune is equal to around 165 Earth years or 60,190 Earth days, which is the amount of time it takes the planet to complete its orbit around the sun. Days on Neptune last about 16 hours, which is 8 hours less than Earth. This is the amount of time that it takes for Neptune to make a complete rotation on its axis.Full Answer >
The Earth completes a rotation around the sun, known as an orbit, in 365.24 days. Earth is located an average of 92.96 million miles from the sun, varying between the closest distance of 91.40 million miles and the furthest distance of 94.51 million miles.Full Answer >
When the Earth makes an orbit around the sun, NASA refers to it as a revolution. It takes Earth 365.25 days to make a complete revolution around the sun.Full Answer >
In 2006, the International Astronomical Union defined a planet as a body that is in orbit around the sun, has enough mass to establish a round shape, and has cleared other debris from the neighborhood of its orbit. This ruling famously resulted in the demotion of Pluto to dwarf planet status, since Pluto did not have the gravitational influence to clear other bodies from its orbital path.Full Answer >