Asteroids

An asteroid is a small, rocky object that orbits the Sun. Most asteroids are found in the asteroid belt, a region of space between the orbits of Mars and Jupiter. They are often referred to as minor planets or planetoids. Asteroids vary in size, from small boulders to hundreds of kilometers in diameter.

Composition

Asteroids are made up of various materials, such as rock, metal, and sometimes ice. Their composition can vary depending on their location in the solar system and their formation history. Some asteroids are solid rock, while others may be loose collections of rubble held together by gravity.

Impact on Earth

Occasionally, asteroids can collide with Earth. The impact of a large asteroid can have catastrophic effects, causing widespread destruction and even mass extinctions. Scientists study asteroids to understand their orbits and potential impact hazards to Earth.

Exploration

Several space missions have been launched to study asteroids up close. These missions aim to gather data on asteroid composition, structure, and potential resource utilization. One such mission is NASA's OSIRIS-REx, which is currently studying the asteroid Bennu.

Study Guide

Here are some key points to remember when studying asteroids:

• What is an asteroid?
• Where are most asteroids found?
• What are asteroids made of?
• What are the potential impacts of asteroids on Earth?
• What are some space missions that have explored asteroids?

Remember to review the composition, impact, and exploration of asteroids to gain a comprehensive understanding of the topic.