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.
Planets do not collide with each other because they orbit around the Sun in stable paths called orbits. These orbits are a balance between the speed of the planet and the gravitational pull of the Sun. The gravitational force between planets is not strong enough to overcome the momentum of their orbits and cause them to collide.
No, it is not true. They do hit planets sometimes.
The planets in the solar system are in well-spaced out, stable, roughly circular orbits - they don't come close enough to collide with each other. Asteroids and comets, however, are on more elliptical, unstable orbits that often cross the orbits of the planets, and sometimes planets collide with asteroids and comets.
Comets can be captured by planets, ejected from the solar system, or collide with a celestial body such as a planet or star. Some comets may break apart or disintegrate due to the effects of gravitational forces and their volatile nature.
Because if they were ever going to collide they would have done it at some time in the last 3.5 billion years. Each planet has its own stable orbit which takes it round the Sun regularly at a fixed range of distances that does not overlap with other planets. The planets are understood to follow Kepler's laws in elliptical orbits, under the force of the Sun's gravity.
Yes and No
They are in their own orbit
No, the planets do not leave their orbits and their orbits do not cross
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
Unless they turn into meteorites, and collide with the planets, pretty much not at all.
It might be War Planets a.k.a. Shadow Raiders
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.
It's certainly possible, but it's very very very very very rare. It's never been seen within human history.
Planets around the sun in nearly circular orbit . The radii of these orbits differ widely
The distance of the planets from the sun does not change because of the gravity surrounding each planet is pulling them into continuous orbit.
(well in pics) but it really wont happen because earth is like a big magnet but the gravitational pull will not let the other planets collide with the earth or (even the sun) some say !!