SOLAR SYSTEM

Detailed explanation-1: -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-2: -Asteroids are thought to be material from our early solar system. Explore the history, origins, and orbits of asteroids and learn about the most common non-main belt asteroids.

Detailed explanation-3: -The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth’s terra firma. The terrestrial planets are the four innermost planets in the solar system.