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What evidence do you have that the planets move in elliptical orbits around the sun and not in circular orbits?
Elliptical orbits of the planets around the sun actually match what we observe. Newton's Theory of Universal Gravitation states that planets will move around the sun in elliptical orbits.
What is the difference between a planet and a natural satellite?
A planet is an object that orbits a star, has enough gravity to make itself mostly round, and has cleared other objects out of its orbit. A satellite is an object that orbits another object that is itself orbiting a star. The object may be a planet, dwarf planet, asteroid, or comet.
What planet orbits the other way then earth?
All the planets in the solar system orbit in the same direction, counter-clockwise.
Why does the earth revolve and the moon doesn't?
Moon also revolve. Earth revolve round the sun and moon revolve round the earth.
Which is determined by the force of gravity?
-- Your weight is, as long as you're standing on the Earth or some other planet, but it's different in different places. -- Also, the speed of the moons, comets, asteroids and planets in their orbits, and also the length of time it takes them to revolve in their orbits.
Orbits of planets are not round but are?
ither elliptical, heliocentric, or position!!!
Do the inner planets have direct or in direct orbit?
All the planets have direct orbits round the Sun.
How does the orbits effect the way planets move?
Orbits help a planet move because of gravitational pull which makes the planet orbit round and round. The planets orbit around the son and the moon orbits around earth. Hope this helps!
What makes the motion of planets revolutionary?
They revolve. They all have individual orbits round the Sun. The orbits closely approximate ellipses.
What are the orbits of the gas giant planets?
They are the path taken by the gas giant planets (that is Jupiter and Saturn) as they go round the Sun.
Why do you think planets do not have same orbits?
It's because each planets is a collection of all the debris that was going round in a similar orbit before the planets were formed. So the planets only survived to the present day by having different orbits.
What astronomer discovered that the orbits of the planets are elliptical rather than round?
Johannes Kepler.
What do planets do when they orbit the earth?
There are no planets orbiting the Earth because all eight of them orbit the Sun. But the Moon orbits the Earth, and all it does is go round and round in a rather complicated orbit which is disturbed by the Sun's gravity.
What would happen to the orbits of the planets if the amount of gravity produced by the sun reduced to almost 0?
The orbits of the planets would all be much larger if the sun had less gravity. They might even just fly off free.
What is the main difference between the orbits of the inner and outer planets?
The planets revolve in elliptical orbits. The inner planets have orbits 230 million km or less from the Sun. The outer planets have orbits 775 million km or greater.
Do the outer planets circle the inner planets?
All planets circle the CEntral Star. So in a way outer planets almost circle inner planets but the Star is at one focus of the planets' orbits so it is more proper to say that planets orbit stars.
What is the shape of the orbits of most members of the solar system?
round but some rounder than others. Every object is in an orbit which is an ellipse. The planets are in orbits which look almost exactly like circles with an offset centre, but some comets and dwarf planets have orbits with a high eccentricity.
