The planet that moves through the background of stars most slowly is:?
494078
Of the 4 you present, Saturn, the furthest from the sun, appears to move slowest ON AVERAGE.  This ignores the fact that Mercury appears to stop entirely twice in its orbit since we're looking at it from outside its entire orbit.\n\nPluto would take honors of all the planets even though it is closer  than Neptune for part of its orbit.....
209097
Pluto is the fartherest planet, there is some discussion about it being a planet or not but for this answer we'll let it be one, from the sun during most of it's orbit. It's 5,913,520,000Km from the Sun.\nThe Main asteriod belt lies between Mars and Jupiter, roughly 374,172,480Km from the sun, the planets run Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune & Pluto.\nThe Kuiper Belt, made up of comets instead of asteriods, lies outside of the orbit of Pluto and some think Pluto is just a comet from this belt. Then going way on out past the Kuiper Belt you run into the Oort Cloud roughly 22,450,348,800,000Km from the Sun and made up of trillions of cometary bodies.
990630
Maybe a geosynchronously orbiting satellite. Those are satellites that rotate with the Earth so it appears that they don't move from our perspective.\n\nObviously, anything else (including stars) would move as the night progressed.\n\nHope that helps.
440880
Well I am not sure if it is proper to apply the term to the sun, but the sun's apparent motion against the background of fixed stars is always in the same direction as that of planets that are moving in the prograde direction.
217292
Mercury is the closest planet to the Sun. the asteroid belt is located between the 5th planet (Mars) and the planet Jupiter
19708
An inner planet is any one of the Solar system's rocky planets that lie inside the asteroid belt: Mercury (planet), Venus (planet), Earth (planet) and Mars (planet). The remaining planets are deemed the outer planets.\n\nThis classification should not be confused with the term inferior planet which designates those planets which lie inside the Earth's orbit (thus Mercury and Venus only).
57986
if it is extemely bright, then it is most likely the planet Jupiter. The moon moves a lot each day, so you need to say exactly what day and time you saw it.
141087
mainly :\nstars generate light, planets only reflect\nplanets move through an orbit (around stars), stars don't
480373
stars, planets, comets, meteors
735634
Scientists using NASA's Spitzer Space Telescope have discovered and directly imaged a small brown dwarf star, 50 times the mass of Jupiter, orbiting with a planet around a Sun-like star. Such an arrangement has never before been seen but might be common, the scientists say, leading to solar systems with distorted planetary orbits.\n\nKevin Luhman of Penn State University is the lead author on a report describing this discovery, which will be published in The Astrophysical Journal. The discovery concerns a class of the coldest brown dwarfs, called T dwarfs.\n\n\nThe detailed research paper on T dwarf - Ref\nhttp://www.science.psu.edu/alert/Luhman9-2006-2.htm
905784
what is the coldest planet
354564
yes there is. Solaris is the North Star.  As you may realise by the name if you can spot it it will point you towards the north direction so long as you are in the northern hemisphere.  It is the only star in the sky that does not appear to move as observed from planet earth.
91699
Stars are burning like our sun. Planets aren't burning like our earth. Planets usually orbit around suns.
75988
A planet is a mass that orbits a central star, is massive enough to 'press' itself into a spherical shape but is not massive enough for nuclear fusion to take place.  In simpler terms, a planet is a large, usually rocky, rock that rotates around a star, like the sun.  Sometimes planets can be giant balls of gas (like Jupiter), but they still rotate none the less.
11810
The 10th planet.\nhttp://science.nasa.gov/headlines/y2005/29jul_planetx.htm
1160107
Since we can't actually see a planet orbiting a distant star, the way we can look for planets is by their influence on the star they orbit. This influence is due to the force of gravity. Even though a planet may be small in comparison to its star, it will nonetheless exert a gravitational force, gently "tugging" at its star. As the planet(s) orbit the star, they will tug at it from different sides. The net effect then, if we carefully watch this star for many years, is that we will see this star "wobble" back and forth! \n\nThere are two basic methods of detecting a planet's gravitational influence on its star: \n\n\n  a. Astrometric Detection \n  b. Radial Velocity Detection \n\n\nThe first method - Astrometry - was hinted at in the previous paragraph. We observe a star and measure its position relative to distant background stars (hence the word "metric" in the name). As an orbiting body tugs at its companion star, we observe a change in position of the star. Measurements of a periodic change in position, back and forth, can indicate that something is possibly orbiting the star. Careful analysis of these measurements can tell us about the orbiting object. \n\nThe second method - Radial Velocity - is a completely different kind of measurement, but relies upon the same principle. That is, gravity. As an orbiting body tugs on its companion star, the light from the star will experience a Doppler shift. If the planet pulls the star slightly away from us on Earth, the starlight will be shifted towards longer wavelengths and appear more red; pulled slightly towards Earth, the starlight is shifted towards shorter wavelengths to appear more blue. To accurately measure this Doppler shift, we chose a known spectral line and observe its shift from red to blue and back. \n\n\n\n\ncheck in here.....I think you'll have your questions answered.\nTo my knowledge,  have been discovered 197 planets out of our solar system until now (update 16 june 2006)\n\nhttp://exoplanet.eu/catalog.php\n\nhttp://isi9.mtwilson.edu/~david/planets.html
703081
mercury\n\nhttp://movies.yahoo.com/movie/1800020664/photo/151554