Which of the following is least reasonable regarding asteroids? The total mass o

Question

Which of the following is least reasonable regarding asteroids?

The total mass of all the known asteroids is much less than that of the Moon.

Most asteroids are confined to the region of space between the orbits of Mars and Jupiter.

Most asteroids are too small to be resolved (detected) by Earth-based telescopes.

We should not be too preocuppied with prospects of asteroids colliding with the Earth because such collisions occur no more than about once every billion years.

Several dozen large basins and eroded craters on Earth are suspected to be sites of ancient asteroid collisions.

Explanation / Answer

We should not be too preocuppied with prospects of asteroids colliding with the Earth because such collisions occur no more than about once every billion years.

occurs around 0.5 million years

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