There are several ways, the most popular are: 1) Just like a star affects the motion of a planet so does the planet affect the motion of the star, but only in small degree. Astronomers look at stars and see if they have a periodic shift in their movement and conclude that a planet is causing it. 2) If the orbit of a planet is "edge on", then it will eclipse the star and cause a periodic reduction of its light by up to 2%.
neptune is the coldest planet as is the most far planent. pluto is not a planet.
Jupiter
Saturn has the most complicated ring system.
Saturn, with 62 moons.
Most stars are bigger than any planet.
No, there are not moons or stars ON planet earth, but there are moons and stars around planet earth. == ==
Mercury... ^_^
mars
None. No planet or dwarf planet contains stars.
Planets have no stars in them.
No planet contains any stars because stars are always much larger.
There are no stars ON any planet. The smallest star is MUCH larger than the largest planet.
Planets are not stars, and there's no such thing as "death stars".
Since planets typically orbit their stars in elipses, there is a point in which it is closest, and another point in which it is farthest, from the star. The planet perihelion is when the planet is closest to the star it is orbiting. That is the most basic explanation. =)
To see how many stars and moons are in the planet
no because stars can orbit each other