Asteroids

Found between Mars and Jupiter.

Asteroids

Over 100,000 asteroids.Vesta is the largest – 330 miles in diameter.Size range – 330 miles to about 100 yards.Irregular-shaped rocky bodies.Some asteroids have moon(s).

Asteroid Facts

Asteroids and Meteorites.

How Are Asteroids, Comets and Meteors Different?

Dawn’s Virtual Flight Over the Asteroid Vesta.

Comets

Are made of ices and rocky material.

Are called “dirty snowballs” or “icy

dirtballs.”Comets are made up of three parts.

Comets

Nucleus – Made of ices –

water, dry ice, ammonia as well as

dirt and rocks.

Comets

Coma- Vaporizing (turning from solid to gas) gases surrounding nucleus.

Comets

Comets

Tail – gas and dust pushed away from comet by “solar wind.” Always points away from the Sun.

From where do they come?

Comets

• The Kuiper Belt

• The Oort Cloud

The Kuiper Belt is found beyond the orbit of

Neptune to 12 billion miles from the Sun.

Comets

Oort Cloud is about one light year from the Sun.

Comets

Comets

Comets

What Are Comets?

Kuiper Belt

Oort Cloud

Meteoroid, Meteor,

Meteorite

These are made of rocks and dirt.A meteoroid is when the

rocks or dirt are in outer space.

Meteoroid, Meteor,

Meteorite

A meteor is when the rock enters the atmosphere.

Meteoroid, Meteor,

Meteorite

It is also known as a “shooting star.”

Meteoroid, Meteor,

Meteorite

A meteorite is when the rock hits the Earth.

Meteoroid, Meteor,

Meteorite

Meteoroids, Meteors, and Meteorites

.

Meteoroid, Meteor,

Meteorite

Ten Biggest Meteor Strikes in History

Russian Meteor

The presentation ends here.