Astronomy
Length and Distance
Asteroids

How often does a one-kilometer object hit Earth?

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2007-09-28 13:46:45
2007-09-28 13:46:45

A meteorite with a 1km diameter will undoubtedly cause global damage. It is believed that a meterite a bit larger was responsible for the extinction of dinosaurs. Rocks this big only appears to hit Earth once every 100 million years.

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It is quite common for small meteors to hit the Earth. Larger impacts by an asteroid or comet are also possible but happen much less often.

Small meteorites hit Earth everyday, but large meteorites hit once a year.

Fortunately not very often - because if one does hit, it would be a major catastrophe.

Because, either we happen to be in it's way, or the object is pulled in by Earths gravitation field.

A mars-sized object hit the earth and the piece that broke off became the moon

They often do. If they get through Earth's atmosphere and hit Earth's surface, they are called meteorites. Many can be found on Earth.

There is no such prediction: it is not known when an asteroid will hit Earth. There are only some estimations, every how often asteroids up to a certain size will hit Earth, but no specific date.

I am not aware of any asteroid or other astronomical object with such a name - and much less of one that is about to hit Earth. If you clarify where you got the information from, we might investigate a bit more.

Scientists think this probably happened and that the "planet" was about the size of Mars. However, it was several billions of years ago and the object that hit Earth is not usually given a name.

Anything in "orbit" is falling into the object that its orbiting ... and constantly missing. Because by the time the (orbiting) object has fallen far enough to hit ... the object it is orbiting has moved far enough so that they miss each other.

well if the path of light is undisturbed by an object since the earth is spherical in shape, the light will go around the earth again and again untill the ray of the rectillinear propogation is disturbed.

NASA's Near Earth Objects program is one group that tracks object that pass near the Earth (you might have expected that from the name).

if its falling it will hit whats pulling it example of indefinitely falling is object in stable orbit ie moon around earth

A large planetary object hit Earth, blowing out rocky debris. Part of the debris went into orbit around the Earth as the moon.

Yes, because it doesn't have an atmosphere to protect it's surface being hit by meteors unlike Earth.

the ball will go on forever unless it hit another object

The awnswer is amazing! about 10 small meteors hit earth! but they mostly hit oceans and don't do damage. but sometimes you can see them hit or even feel the impact! dude you cant spell you must be a retard

Probably Earth. It is assumed that in the very early life of the Earth it was hit by an object the size of Mars, resulting in matter ejected from the Earth, forming the Moon.

Objects are hitting us every day of every minute.

Approximately 4.6 billion years ago. Earth was formed by many asteroids and protoplanets colliding with one another to form a single object.

Australite is a form of tektite, a small, round, dark object formed by the rapid cooling of meteorite fragments which hit the Earth.

Meteors hit the earth frequently. Shooting stars are space debris that burns up in the atmosphere, but small pieces often make it through.

Yes they have. There is evidence that they have. However, one should not confuse the fact that "asteroid" is not the correct term to define the object colliding with the earth. An asteroid is the object when in space. However, when it reaches and goes through the Earth's atmosphere, it becomes known as a "Meteorite".


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