SOLAR SYSTEM

Detailed explanation-1: -Most of this comet debris is between the size of a grain of sand and a pea and burns up in the atmosphere before reaching the ground.

Detailed explanation-2: -Most of the meteors you see are about the size of a grain of sand and burn up at altitudes above 50 kilometers (in the mesosphere). If the chunk of rock is a meter or larger in size, it is called an asteroid.

Detailed explanation-3: -Asteroids and meteoroids are small rocky objects, much smaller than planets, that orbit the sun. If it is larger than 1 meter in diameter, then it is an asteroid; if it is 2 millimeters to 1 meter in size, it is a meteoroid. If it is smaller than 2 mm, it is a micrometeoroid.

Detailed explanation-4: -Meteoroids are lumps of rock or iron that orbit the sun, just as planets, asteroids, and comets do. Meteoroids, especially the tiny particles called micrometeoroids, are extremely common throughout the solar system.

Detailed explanation-5: -Some meteorites, however, are as large as boulders. The largest meteorite found on Earth is the Hoba meteorite discovered in Namibia in 1920. The Hoba meteorite weighs roughly 54, 000 kilograms (119, 000 pounds).