What is the difference between a planet and a star? It is easy, but pleas write me a full explanation?
356177
In lay man's terms:\n\nA star: a huge ball of fire, emitting heat and light, mostly composed of gasses and the source of the heat is the nuclear reactions happening isnide it due to the massive pressure in its core. An example is the sun, the temperture of its surface if more than 5000 degress centigrade, while the temperature of its core is several million degrees. A star is 'usualy' much larger than planets(thouthands to millions of times larger) . Some stars have planets orbiting around them (e,g, our sun)\n\nPlanets: Intert masses that do not emit light or radiate heat. Planets revolve around stars and are far much smaller than stars(e.g. earth, mars, saturn, jupiter,etc). Some planets have moons(much smaller planets) revolving around them.Mostly planets are solid masses, but sometimes they are made of gases. The temperature of planets is far cooler than stars.
612427
Nice question....stars shine because it is millions of light year away from us...in the case of planets its nearer than stars...not sure though..but i think so...
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.
220183
Simple way to look at this perinnial question. One solar system. One planet like earth froms. Sustains life. Universe is filled with billions of stars. Some the size of our Sun. Some have planets revolving round them. Like earth too. Take a wild guess and u wont be wrong. \n;-)
1046132
A star produces it's own light, a planet does not, it merely reflects the light of the star. Because a star producing it's own light, it will glow brightly, dim, then glow again........this is the twinkling effect, much like the flame from a match, or any burning fire. :)
232112
planets, stars, and quasars
1171177
We have already found planets orbiting other stars in our solar system. They detect them by the "wobble" of the star. The wobble tells them something is orbiting the star. Knowing the stars aproximate mass, they can tell roughly how big the planet is. We have found almost one hundred planets outside of our solar system.
1057689
It is not a star but a planet which you can tell since it is not twinkling. Stars are so far away they appear as a point, while planets have a observable disk. Wind in the upper atmosphere then causes the light to bend which causes star light to twinkle but planets do not. \n\nOnce you determine it is a planet because it is not twinkling. You can rule out it being venus since it is too far from the sun. Venus is also usually a bit brighter.\n\nNow it is too bright to be Saturn or certainly any further planet. That leaves Jupiter or Mars. These you can distinguish by color. Mars has a reddish tinge to it. What you are observing does not.\n\n It is Jupiter. If you have a good pair of binoculars you should even be able to make out a couple moons.
795342
Planets like Mars, Jupiter.  The stars that are so far away that it takes light hundreds of years to reach Earth from there.\nGalaxies that contain billions of stars. We are in a Galaxy called the Milky Way.  The Ocean.
37735
Stars are like our Sun. Not comets at all. Comets are dirty, big snowballs that have no light at all. The twinkling comes from heat radiating from earth which makes the light spectrum shift in different colours. Symbols that represent something doesn't often look like the original. Take the symbol for a heart for example. But it's easy! :) Try to draw a immensly huge boiling, burning piece of gas that throws tons of particles out from it in lightning speed and see if anyone understands what you drew. Now try to make it into a character that you can type on a keyboard :)
403997
Astronomy:The life of Stars. You can get some awesome pictures for that and there is plenty to write about, like (i am not completely sure about this number)did u know that light takes almost 250,000 years to travel from the center of our sun to the surface.\n\nhttp://en.wikipedia.org/wiki/Star
480373
stars, planets, comets, meteors
312576
Stars are big fiery balls of gas. Essentially the gases cluster together and become stars through gravity and fusion. It's a rather complicated process; check the link below for a more detailed explanation.\n\nStars appear to be in our sky because they are in space. Most stars appear to be small points of light, although many of these stars are smaller than our sun. The sun simply appears larger because it is much nearer to the Earth.
330346
As of right now, scientists believe that planets are by-products of the formation of stars. A star is formed when particles in a swirling cloud of dust and gas (a nebula) get closer and closer together and begin to combine hydrogen atoms to form helium atoms. This produces lots of energy (which is why stars, like the Sun, shine). Planets are the leftover "clumps" of dust and gas that do not produce their own energy.
683582
There are about a couple hundred billion stars in our galaxy. The stars close to the center are not likely to have planets because of dynamical considerations (other stars pass by too frequently to have stable orbits).\n\nThe BIG question is how many planets there are per star on average. Our sun has ten planets and assorted other objects. We have found many other planets orbiting other stars, but most of those stars have only one planet (that we have detected). One has three planets that we know about. HOWEVER, the way we detect these planets favors detecting large planets that are very close to their star. Once you start to ask about planets as small as Saturn, or that are farther away than Mercury is from our sun, the methods don't work so well.\n\nThe upshot is that we really just don't know how many planets a typical star has. Some probably have none. How many have none? We don't know. How many have ten smallish planets? We don't know. At best we can guess, say 4-5 on average. This would give close to a trillion planets in our galaxy. The number could easily be a tenth of this, though.
121936
Is the sun a planet?  Is the moon a star?  Is the earth yellow and full and made of cheese?
806566
Oops. There is a problem with the question. You used the words smaller and larger. These may usually be the appearance of planets and moons, but in fact, these are the wrong words when you ask about objects in orbit.\n\nThe variables that determine orbital paths are mass, relative vectors and speeds. \n\nSize (smaller or larger) is not one of the variables. It may be true that a larger object - of the same material - has more mass than a smaller one, but not always. A large steel bucket has less mass than a cannon ball that can fit inside it.\n\nA dwarf star could be very small. Smaller than the Earth. A planet the like the Earth would orbit the star, even if the star was smaller. \n\nPlanets and moons are in orbit around each other. An orbit is a kind of ellipse. An ellipse is a kind of like a circle, but it has two centers rather than one. The objects travel around one of the centers. If the two objects are exactly the same mass and speed and in orbit, the two centers could be exactly between them and the orbits would be circular. Their size would not matter. \n\nHowever, in the real universe, most objects are made of plasma, iron, silicates, and other materials that cause them to form stars, planets, asteroids, planetoids, comets, and gas and dust clouds. In most cases, the larger ones - the most massive ones - are orbited by smaller ones - the less massive ones. But is some cases the larger ones are very tenuous and although larger, they still orbit the more massive object. \n\n;-D The huge Oort cloud is about 6 light years in diameter. It is in orbit around our little Sun!