Meteoroids
A meteoroid is a small rocky or metallic body in outer space. They range in size from small grains to 1-meter-wide objects. Meteoroids are significantly smaller than asteroids, which are larger rocky bodies, and can be found throughout the solar system.
Characteristics of Meteoroids
Meteoroids can be composed of various materials, including rock, metal, or a mixture of both. They are often fragments of comets or asteroids and can vary in shape and composition depending on their origin.
Meteoroids, Meteors, and Meteorites
When a meteoroid enters the Earth's atmosphere, it is called a meteor. The friction with the atmosphere causes the meteoroid to heat up and create a streak of light in the sky, commonly known as a "shooting star." If the meteoroid survives the journey through the atmosphere and lands on Earth's surface, it is then called a meteorite.
Study Guide
- Origin and Composition: Describe the origin and composition of meteoroids. Compare and contrast their composition with asteroids.
- Meteor Showers: Research and describe famous meteor showers, including their origins and peak times.
- Impact on Earth: Investigate the potential impact of meteoroids on Earth and discuss historical events related to meteorite impacts.
- Meteoroid Observation: Explore methods and tools used to observe and track meteoroids. Discuss the significance of studying meteoroids for planetary science.
- Space Missions: Research space missions that have involved the study of meteoroids and their importance in understanding the formation of the solar system.
By studying meteoroids, we gain valuable insights into the formation and evolution of our solar system, as well as the potential risks and opportunities they present for Earth and space exploration.
