It depends on the planet. Some planets, like Jupiter, are made from gas. While others, like Earth, are rocky planets.
The total mass of all the planets, moons and asteroids, etc. is approximately equal to 0.14% of the mass of the Sun. Of that, more than half is the mass of Jupiter.
The more gravity something has, the more gravity it has. A planet, like Jupiter, can have 30-something moons because of it's large mass. And the solar system exists only because the sun has so much mass it generates gravity for all the planets.
There is no average mass because most planets are not alike. Yes, there's is no "average" planet, but there is still a mathematical average value for their mass. Someone might like to do the math.
Jupiter is the planet in our solar system with greater mass than the combined mass of all the other planets and their moons.
4.87
No. The Jovian planets are much more massive than the terrestrial planets.
Jupiter contains about 70% of the total mass of all the planets in our solar system. It is by far the most massive planet, with a mass that is more than twice the combined mass of all the other planets.
All planets have mass.
It is more difficult for gases to escape from Jovian planets because they have much stronger gravitational forces due to their larger mass, which means gases are held more tightly to the planet. Terrestrial planets have lower mass and weaker gravity, making it easier for gases to escape into space.
All the planets are made of "matter" and that has "mass".
Mass does not change with gravity. Weight increases on BIGGER planets and decreases on smaller planets.
The sun is a star, not a planet. The sun has about 700 times the mass of all the planets combined.
A fair amount, though it depends on the distances of the planets and their masses. The important thing is that the gravity (and therefore mass) of the central sun must be much greater than that of the planets, other wise they would orbit each other (or the sun would orbit the planet if its mass was much greater).
Mass does not change when one is traveling between planets, because mass is the measure of how much mater there is.
A huge mass of stars and planets is called a galaxy.
Planets have gravity because they have mass.
Planets with a large amount of mass.