65 million years ago.

The Asteroid Belt orbits between Mars and Jupiter, at about 3 AU. There are several objects not properly classified as asteroids orbiting within the belt, mainly the dwarf planet Ceres and the protoplanets Vesta and Pallas.

They can be anything from 10 meters across to much, much larger objects, the largest is 940 Kilometers across.

The largest object in the asteroid belt is Ceres at about 580 miles across. It is classified as a dwarf planet rather than an asteroid.

It is between Mars and Jupiter.

Unlike old science fiction movies which gives you the impression that asteroids are close together, the average distance between asteroids is approximately 1 million km. If you were to travel through the asteroid belt, the chance of encountering an asteroid is next to nothing.

The asteroid belt is a region about a hundred million miles across, so there's no such thing as "a year on the asteroid belt". Any given asteroid in the core region of the belt could have an orbital period from a little under 3 up to nearly 6 years.

1 Ceres, for example, has an orbital period of a bit under 1682 days (4.6 years).

The asteroid belt does not have an atmosphere.

Asteroids are found all over the solar system. The vast majority is located in the asteroid belt between the orbits of Mars and Jupiter.

Huston, we haven't been hit by space objects. I repeat, we have not been hit by space objects, YEAH!

Pluto is technically an asteroid, but it's unusual in that it is ball-shaped. most asteroids are too small to form a ball shape.

If it happens to be Midas-22, it's worth quite a chunk of change.

This is not a scientific answer (corrections welcome) but based on the location of the Asteroid belt, the length of the Martian year and the length of the Jovian year, I would surmise that it takes the asteroid belt about 7earth years to orbit the sun. But don't quote me!

Just like all of the rest of the solar system, the asteroid belt is mostly empty space. The probability (chances) of hitting something on the way through it is mathematically greater than it is while sailing through some other part of the solar system, but it isn't anywhere near a sure thing.

Asteroids are too small to have enough gravity to prevent any atmosphere form escaping.

planets

moons

asteroids

meteorites

meteors

Most of the asteroids within our solar system can be found within the Asteroid Belt. Located between the orbits of Mars and Jupiter, the Asteroid Belt consists of millions of individual asteroids of varying sizes - from a speck of dust to hundreds of kilometers in diameter. The largest object within the belt is a dwarf planet - Ceres - which has a mass of 9.47x1020kg and a diameter of 476.2km.

You can't, as you don't know the viscosity of the object it is hitting.

Most of the asteroids within our solar system can be found within the Asteroid Belt. Located between the orbits of Mars and Jupiter, the Asteroid Belt consists of millions of individual asteroids of varying sizes - from a speck of dust to hundreds of kilometers in diameter. The largest object within the belt is a dwarf planet - Ceres - which has a mass of 9.47x1020kg and a diameter of 476.2km.

The interaction of earth-orbiting and Sun-orbiting planetesimals (very large chunks of rocks like asteroids) early in the history of the Solar System led to their breakup. The Moon condensed from this debris.

The element named after the asteroid Ceres, discovered in 1801 is Cerium. it is a grey metal, more abundant than tin or lead and almost as abundant as zinc. It is little used because it tarnishes easily, reacts with water and burns when heated. A little cerium is employed in alloys, special glass and ceramics, but the best known use is in flints for pocket lighters

small asteroids are called meteoroids
minor planet or planetoids

Meteorite impact hypothesis is that theory about a meteorite hitting the earth some thousands of years ago and bringing the dinosaurs to extinction, better known as Alvarez

where ever it lands up

No. Asteroids are tiny compared to stars.