What Are Meteors Made Up Of?

Meteors are observed in the night sky as a streak of light.
••• Image by Flickr.com, courtesy of Matthias Rhomberg

Meteors are chunks of debris that roam through space and sometimes fall to earth. Most meteors are only about the size of a grain of sand. Particles of dust, known as meteroids, enter earth's atmosphere every day.

Features

Meteor is the scientific name for the bright flash of light that appears in the sky. The light occurs because the meteor falls at such a high rate of speed, both the meteor and the surrounding air become superheated. The molecules of the meteor and atmosphere break into particles and then recombine, releasing energy to form the streak of light.

Types

Meteors are classified into three major types known as iron, stony-iron and stony. Iron meteors are comprised of 100 percent iron and nickel. Stony-iron meteors are made up of 50 percent iron and 50 percent silicates. Stony meteors are composed of 10 to 15 percent iron and nickel with 85 to 90 percent silicates.

Meteor Showers

When a comet nears the sun, it may lose rock and dust particles ejected in its tail. As earth enters the path, the particles are picked up in the atmosphere. During a meteor shower, hundreds of meteors may be seen in the night sky.

Meteorites

Although most meteorites come from asteroids and comets, according to the University of Leicester, Department of Physics and Astronomy, some meteorites have a composition similar to moon rocks and materials found on Mars, suggesting that impacts with those planetary bodies threw off surface material.

Fun Fact

The famous impact crater at Barringer, Arizona is 1.2 kilometers across and estimated to be 49,000 years old.

Related Articles

Myths About Shooting Stars
Similarities Between a Comet and a Meteorite
Famous Meteors
The Similarities and Differences Between the Sun and...
Three Major Types of Meteorites
What Are the Elements of Uranus?
What Materials are Comets Made Up Of?
Differences Between Dwarf Planets, Comets, Asteroids...
The Characteristics of Comets, Meteors & Asteroids
What Are the Parts of a Comet?
What Does a Ring Around the Sun Mean?
What Does the Mantle of Earth Consist Of?
7 Types of Electromagnetic Waves
Elements Found in Meteorites & Meteors
How do I Tell the Difference Between Shooting Stars...
What Happens When a Meteoroid Enters Earth's Atmosphere?
How Is Heat Transferred From the Sun to the Earth?
Composition of Cinder Cones
What Causes Metamorphic Rocks to Form?
Myths About Shooting Stars
Three Major Characteristics of the Inner Planets