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Why stars seem to move faster than planets in the sky as viewed from earth?
Wiki User
∙ 10y ago
It's because we are going round the Sun and so are all the planets. For that reason the time it takes for a planet to go round the ecliptic and arrive back at the same apparent position - called its synodic period - is longer than a year.
Venus and Mars have the longest synodic period because their times to go round once are the closest to 365 days. They take 225 and 687 days to go round but the synodic periods are 584 and 780 days.
On the other hand the far-out planets do not move much in a year. Neptune takes 165 years to go round so its synodic period is only a little over 365 days and is 367½ days.
Wiki User
∙ 10y ago
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What moves faster planets or stars?
Relative to the Earth, almost all stars are moving faster than any planet is.
Are Earth and Mars Stars or Planets?
planets.
What is visible at night from the earth?
the stars and some of our planets
What does astronemers do?
an astronemer studys the earth, planets and stars
What objects in space above earth take pictures of stars and planets?
its called a satellite, a large object floats in space above earth to take pictures of stars and planets
Why do you see stars twinkling but planets do not?
the stars emitt its own light. But the planets do not have any own light. It absorbs the light from the stars like a sun. It just reflects the light. And also the stars are far away from the earth than the planets. So we can found the twinkling of stars but not the planets.
Who moves the planets sun or stars?
How far is the earth to the sun?
What is the family of stars and planets that the earth belongs to?
Solar System
Why do planets change their position with respect to stars?
Because the Earth and all the planets move in orbits round the Sun, while the stars appear to be fixed if we disregard the Earth's daily rotation.
Which planets have morning and evening stars?
Any planets further in would tend to appear as morning or evening "stars." So from Mars the planets Earth, Venus, and Mercury would all be morning and evening "stars." Venus, of course, would be much brighter than Earth, even though Earth would generally be closer. Earth has a lower albedo.
What do planets revolve around?
Planets orbit stars. Our planet (earth) orbits a star we call the sun.
How can differentiate a star from a planet by looking at it?
If we watch the night sky daily, we will notice that the sky is studded with bluish silver twinkling dots. They are Stars, several light years away. The star look static, hardly moving across the sky. But you can see planets moving across the sky. Planets move on complicated path with respect to the background stars, faster than the speed of the Earth, and sometimes, they even reverse their directions. Every planets moves with different speed on its orbit around the Sun. Thus, the planets position from the Earth changes with time. A stark difference between the stars and the planets is the stars twinkle and planets do not. We all know that the Sun is a star. The reason why it does not twinkle, and appears larger than other stars, is because of its close proximity to Earth.
