They are moving in an elliptical orbit
Planets and comets move faster when they are closer to the sun.
Planets and comets move faster when they are closer to the sun.
centripetal force.
Terrestrial planets are closer to the sun than gas giants, which means they have shorter orbital periods. This leads to terrestrial planets moving more rapidly in their orbits compared to gas giants. It is a result of the gravitational pull from the sun being stronger on planets closer to it, causing them to move faster.
The Sun and orbiting planets are MUCH closer to the Earth than other stars.
The planets closer to the Sun than Jupiter are: Mercury, Venus, Earth, and Mars. So, four planets are closer than Jupiter.
Mercury and Venus are the planets that are closer to the Sun than Earth.
No force is needed, which is lucky because there isn't any. A planet's speed in the direction of its orbit prevents it from falling in closer.
Their orbit is a smaller circle than the ones further out, and as long as they are moving at relatively the same speed they will complete each orbit faster. Check out the planetary orbits link, it gives a really cool description and moving diagram
Planets Mercury and Venus are closer to the Sun than Earth.
The inner planets are closer to the sun than the outer planets because of the way the solar system formed. When the solar system was still a swirling disk of gas and dust, the inner planets formed closer to the center where it was hotter, while the outer planets formed in the colder regions farther away. This distribution of planets based on temperature led to the inner planets being closer to the sun than the outer planets.
"The Inner Planets" is the common term for the four planets closest to our sun.