By: Ciara Harrison, Julia Romero & Greg Moore

History of Comets Comets were discovered by danish astronomer tycho brahe in 1577. Haleys comet was named after comond halley. Isaac newton showed that a comets movements are much like the same laws that control the planets orbits.

Distance From Earth in KM. Comets are usually about 9.2 million miles from earth. Sometimes comets get in the way of another comet and they will collide.

Composition Temperature & Atmosphere of Comets Comets have an icy body. Therefore they are super cold. The atmosphere around a comet is a gas cloud.

Types or Kinds of Comets There are many different kinds of comets. This is a list of them: Main belt comets, centaurs, krentz sungrazers, short period comets, and great comets.

Life Cycle of Comets

Physical Characteristics of Comets The physical characteristics of comets are that they have an icy body that releases gas or dust.

Could Life Exist? What would it look like? No life on comets could not exist because comets are made of ice, dust, and little pieces of rocks; therefore it is impossible to go to a comet.

History of Asteroids Asteroids were made when something hits a planet or moon and a piece of rock chips off. Asteroids are known to be grouped together in an asteroid belt.

Distance of main asteroid belt from earth The main asteroid belt is about 5 km from the earth.

What are asteroids made of? Asteroids are made of rocky chunks of matter in orbit around the sun.

Composition of Asteroids Asteroids are varied in their composition. Most are made of rock, but some are composed of metals and other materials.

Types or kinds of asteroids & Where are they found?

Physical characteristics of asteroids Asteroids range in size and are just rocks.

Could life exist? What would it look like? Life could not exist on an asteroid because it is just a giant rock.

Temperature and Atmosphere of an Asteroid Every asteroid is different because of the different sizes,orbits, and compositions; But the average asteroid in the asteroid belt is about -150C. Around an asteroid is usually rocks, cold ice, dust, and other minerals.

History of Meteoroids They have only found 7 meteoroids that have hit earth in history. All of the 7 that hit earth were large impact.

Distance from Earth Most meteoroids move close to the earth, however, only few of them hit earth. The rest of them just pass by.

Size, Density, & what is it made of? Meteoroids are 3.5x more dense then an earth rock Their size is at least the size of speck of dust but smaller then an asteroid. Meteoroids are made of a small piece of dust, rock, ice, or metal.

Composition, Temperature, & Atmosphere Meteoroids are mainly iron. Meteoroids temperature depends on weather in sunlight or moonlight. Move at light speed.

Types or Kinds of Meteoroids

Life Cycle of Meteoroids

Could Life Exist? No life could not exist because a meteoroid is just a fast moving space rock and will get to cold and to hot.