yes, many objects enter earths atmosphere everyday but are burnt up before they make it to the ground.
they go around the sun like the earth
It is possible for comets and asteroids to hit Earth, but they are extremely rare events.
Well, some asteroids have small moons, and comets are the size of Earth mountains.
As far as we know, no rogue planet has ever come near Earth. Comets and asteroids have come near Earth, but not actual planets.
Earth is much more massive than asteroids and comets, and thefore has much stronger gravity, which pulls it into a spherical shape. Most asteroids and comets do not have strong enough gravity to do this.
asteroids
Asteroids orbit the Sun between the orbits of the planet Mars and the planet Jupiter. Comets orbit the Sun on very elliptical orbits, originating from the Kuiper belt beyond the orbit of Neptune or the Oort cloud at the edges of the solar system. Comets are also usually (but not always) icy bodies that give of gas and dust (a tail) as they approach and get heated by the Sun. Meteorites are bodies that were Asteroids or Comets that have hit the planet Earth and landed on the surface.
There is only one way that a comet or asteroid can affect the earth. These two things can affect the earth if they enter the earth's atmosphere and hit our planet.
Yes
No. They are in space.
asteroids and comets!
Yes. It is heavier through the bombardment by meteors, asteroids, comets, and another planet (which led to the formation of the Moon).