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The most commonly discussed "retrograde" motion is the apparent backward motion of a planet caused by its being lapped by another planet, or vice-versa. Both planets move in a direct (eastward) motion around the Sun, but the planet with the inside (smaller) orbit moves faster than the planet on the outside (larger) orbit, and when it passes the slower-moving planet, each sees the other one as apparently moving backwards relative to its usual motion around the sky. In this "retrograde" motion, neither planet is actually moving backwards; it only appears that way, during the time that one laps the other.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoThis is because the sun orbits around the earth, along with the rest of the universe
( I am the center of your universe )
Wiki User
∙ 13y agoBecause we on the planet earth are traveling around the sun; to ourselves we appear stationary, and the sun appears to move. Because the earth also is rotating on its axis.
Wiki User
∙ 12y agoas your kindegarten teacher would've told you, its the earth that moves not the sun
This happens because the Earth rotates towards the east.
Wiki User
∙ 12y agobecause the sun likes how the earth smells
Wiki User
∙ 12y agoThe earth's rotation.
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What causes the stars to move slowly across the sky in a zig zag path?
To a stationary observer they go across the sky slowly and steadily in nice curves, which are technically small circles on the celestial sphere.
Can planets of the solar system be found in the Big Dipper?
No, the big dipper (or Ursa Major) is not in the area of the sky that the planets move through. All of the planets, sun and moon are more or less on the same plane, so they all move in the same east/west line across the sky. Ursa Major is more to the north.
Why do planets move across the night sky but stars don't?
The planets are closer. (They all move - and differently.)
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.
When was Across the Concrete Sky created?
Across the Concrete Sky was created in 2003.
What is the planets' backwards motion in the sky called?
retrogade motion
What causes the apparent movement of objects across the sky during day or night on earth?
The rotation of the earth is what gives motion to the heavens.
Purpose of using epicycles and deferents to explain the motion of the planets in the night sky was to account?
retrograde motion
What is the motion of birds flying across the sky?
Powered flight.
The study of position of stars and their motion across the sky?
astronomy
Why do planets appear to move across the sky's star patterns?
Because it does
What do the planets do to incur retrograde motion?
The planets don't have to "do anything" to "go into" retrograde motion. The retrograde motion, the "moving backward" that planets do as we watch them cross the night sky over the weeks, is due to the nature of the orbit of a planet and to our view of that orbit from earth.
Can i Move planets across states?
Planets naturally move in our sky over time and therefore are over different states.
What can you observe day and night that shows motion?
The moon/sun moving across the sky shows motion/rotation.
Does the sun spin as it moves across the sky?
The sun doesn't move across the night sky but the earth and all planets of the sky do.when we circle around the sun it just looks like it movesI.F
What is the line that the sun traces across the celestial sphere?
The "ecliptic". In truth, the Sun doesn't move; the apparent motion of the Sun across the sky is caused by the Earth spinning, and the apparent motion of the Sun across the "celestial sphere" is caused by the Earth orbiting the Sun. But the plane of the Earth's orbit around the Sun is what causes the apparent motion of the Sun across the celestial sphere, so the "ecliptic" is actually the plane of the Earth's orbit.
You see a flock of birds flying across the sky The motion of the birds was begun by?
yes
