Yes. Highly unlikely, but possible. During the early days of a solar system formation (ours or anybody else's) there's all sorts of stuff flying around gradually forming planets and moons and such. It is generally believed that our Moon was formed when another large almost-planet collided with what was slowly becoming the Earth, and knocked off a big chunk of it. This was 4 BILLION years or so ago, so it's not like it happened last week or anything. And once the planets of a solar system are formed, and revolving around their star (or stars) the orbits are pretty stable. So I wouldn't worry too much about Saturn swinging around and careening into the earth.
No. Planets cannot share the same orbit. If they did, they would collide.
planets will fall to the outer space ,they will collide with each other and they will melt or exploded
No, it is not true. They do hit planets sometimes.
Inertia keeps them moving forward.
they would probably collide with a comet, asteroid, the Sun, or another planet.
They are in their own orbit
Yes and No
No they do not cross and they do not leave their orbit, which means the state it has been right now will last forever.
No they each have its own orbit around the sun and they do not collide
As the planets orbit the sun, its gravity keeps them from colliding
No. Planets cannot share the same orbit. If they did, they would collide.
Unless they turn into meteorites, and collide with the planets, pretty much not at all.
Gravity.
It might be War Planets a.k.a. Shadow Raiders
Planets around the sun in nearly circular orbit . The radii of these orbits differ widely
In the early stages of planet formation, planets did in fact hit other planets. Mercury, Earth and Uranus all have signs of planetary impacts. Nowadays, the solar system is stable and a planetary collision is highly unlikely without some form of external impetus.
The distance of the planets from the sun does not change because of the gravity surrounding each planet is pulling them into continuous orbit.