1. Difference and Similarities of Earth Mercury Venus and Mars

2. What does Terrestrial planets mean? Earth like planets Made out of Rocks or Metals.... Have a Molten and a Heavy metal core

3. Smallest planet 88 days in earth=1 year in mercury Aphelion and Perihelion MERCURY

4. HOW MERCURY ORBITS

5. Second planet from the Sun Goddess of love and beauty Evening star and Morning star VENUS

6. The only liveable planet The most dense planet EARTH

7. Trivia question Guys can you guess how old is our planet earth?

8. Second smallest planet Named after the God of War Red Planet MARS

9. Iron and Different Types of Rock Hydrogen, Helium and Ice Asteroid Belt Inner Planets Outer Planets

10. http://abackgrounds.com/earth-wallpaper-desktop/ http://www.sciencebuzz.org/blog/saturday%E2%80%99s-featured- planet-mercury-where-it-snows-iron%E2%80%A6unde http://scienceblogs.com/startswithabang/2011/12/10/how-much-like- earth-is-keplers/ http://zzero101.wordpress.com/2013/10/09/planet-mercury-1-day/ http://actionforspace.com/free-desktop-wallpaper-planet-mars/ http://en.wikipedia.org/wiki/Venus REFERENCE: http://en.wikipedia.org/wiki/Mars http://en.wikipedia.org/wiki/Earth http://en.wikipedia.org/wiki/Mercury http://www.messenger-education.org/elusive_planet/around_sun.php http://rap.genius.com/Apeldin-aghassi-space-lyrics#note-1839178 http://wiki.answers.com/Q/What_are_three_major_differences_betw een_the_inner_and_outer_planets http://www.space.com/17028-terrestrial-planets.html