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They have not been named. There have been many of them over the millions of years.

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16y ago

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When will wormwood hit the earth?

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.


What part of speech is the word asteroid?

Some people think the dinosaurs died when an asteroid hit the earth.


Is the earth inside or outside the asteroid belt?

From the sun it goes Mercury, Venus, Earth, Mars, ASTEROID belt, Jupiter, Saturn, Uranus, Neptune, Pluto (although no longer classed as a planet). So the earth is inside the orbit of the asteroid belt.


Does the gravitational attraction between earth and an asteroid decrease as the asteroid approaches earth?

The gravitational force (or attraction) between any two objects increases as the distance between them decreases. Thus, as an asteroid approaches Earth, the Earth's gravitational pull will increase as it gets nearer.


How to calculate if an asteroid will hit the earth?

There is essentially no chance of any given asteroid ever hitting the Earth, because those with orbits that made them likely to hit the Earth have already hit the Earth. So it's not something you really need to worry about.If you're just curious... well, really, you don't want to know that badly. It comes down to solving n-body gravitational equations, and for any reasonably sized n (i.e. larger than, say, 3) there is no known exact solution except in special cases, so you have to use numerical methods and hope the interesting bits don't get lost in rounding errors.