1. Components of Space

2. Universe
All of space that includes many galaxies

3. Galaxy A system of stars mixed with gas and dust.
We are part of the Milky Way Galaxy, which is a spiral galaxy.
The next closest galaxy is called Andromeda.
There are approximately 200 billion stars in our galaxy.

4. MILKY WAY GALAXY

5. Solar System
The solar system includes the sun and all the bodies that orbit around it.

6. Planet
A spherical body that orbits around the sun and has its own gravity

7. Put the following in order from largest to smallest:
Solar System
Universe
Galaxy
Planet
Universe
Galaxy
Solar System
Planet

8. Inner Planets
These are known as terrestrial planets because they are dense and rocky
Mercury
Venus
Earth
Mars

9. Asteroid & Asteroid Belt
Asteroid – A large rock which is smaller than a planet and orbits the sun
Asteroid Belt – asteroids that revolve around the sun between the orbits of Mars and Jupiter

10. Outer Planets
These are known as the gas giants because they are very large and mostly made of gas
Jupiter
Saturn
Uranus
Neptune

11. Dwarf Planet - Pluto
Pluto is now classified as a dwarf planet because it is very small

12. Solar System Diagram

13. Moon A naturally occurring satellite orbiting around a planet
Some planets have more than 1 moon

14. Star
A massive ball of luminous gas that are held together by their own gravity
A star creates its own light
The life cycle of a star is determined by its mass.

15. Constellation
A group of stars that form a pattern in the sky

16. Comet
An icy body that releases gas or dust and has a long oval orbit

17. Meteoroids & Meteor & Meteorites
Meteor – a meteoroid that enters Earth’s atmosphere and completely burns
Meteoroid – a chunk of rock or dust that usually comes from comets or asteroids
Meteorite – a small rock that lands on earth from space

18. Additional Links http://www.kidsastronomy.com/solar_system.htm

19. Which planets are terrestrial and which planets are gas planets?
Ticket Out
Which planets are terrestrial and which planets are gas planets?