1. Components of Space

2. Universe All of space that includes many galaxies All of space that includes many galaxies

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

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

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

9. Asteroid & Asteroid Belt Asteroid – A large rock which is smaller than a planet and orbits the sun 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 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 These are known as the gas giants because they are very large and mostly made of gasgas giantsgas giants Jupiter Jupiter Saturn Saturn Uranus Uranus Neptune Neptune

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

12. Solar System Diagram

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

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

15. Constellation A group of stars that form a pattern in the sky 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 An icy body that releases gas or dust and has a long oval orbit

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

18. Additional Links http://www.kidsastronomy.co m/solar_system.htm http://www.kidsastronomy.co m/solar_system.htm http://www.kidsastronomy.co m/solar_system.htm http://www.kidsastronomy.co m/solar_system.htm http://science.nationalgeogr aphic.com/science/space/sol ar-system http://science.nationalgeogr aphic.com/science/space/sol ar-system http://science.nationalgeogr aphic.com/science/space/sol ar-system http://science.nationalgeogr aphic.com/science/space/sol ar-system http://www.nasm.si.edu/rese arch/ceps/etp/etp.htm http://www.nasm.si.edu/rese arch/ceps/etp/etp.htm http://www.nasm.si.edu/rese arch/ceps/etp/etp.htm http://www.nasm.si.edu/rese arch/ceps/etp/etp.htm

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