... body that revolves around a central star and does not shine by its own light " (Grolier, 1992). The only planetary system that is known to man is our solar system. It is made up of nine planets which range in size and make-up. The nine major planets in our solar system are ... is the closest planet to the sun and therefore orbits faster than any other planet " (Thompson/Turk, 542, 1993). It is said that Mercury rotates three times for every two trips around the sun, so that during Planets 3 every alternate perihelon passage the same face points directly at the sun. " Geologically, the mo...

• Word Count: 1722
• Approx Pages: 7
• Grade Level: High School

... planet is a celestial body that revolves around a central star and does not shine by its own light. The only planetary system that is known to man is our solar system. It is made up of nine planets, which range in size and characteristics. The nine major planets in our solar system are ... caused by the two atmospheres of Mars. Scientists do know, however, that Mars is relatively small and that changes take place in the surface features when the seasons change. It is also known that dust storms are prevalent and leaves the surface of Mars covered by a red haze. Mars has a very thin atmos...

• Word Count: 1818
• Approx Pages: 7
• Grade Level: High School

... a celestial body that revolves around a central star and does not shine by its own light " (Grolier, 1992). The only planetary system that is known to man is our solar system. It is made up of nine planets which range in size and make-up. The nine major planets in our solar system are Mercury, ... the closest planet to the sun and therefore orbits faster than any other planet " (Thompson/Turk, 542, 1993). It is said that Mercury rotates three times for every two trips around the sun, so that during Planets 3 every alternate perihelon passage the same face points directly at the sun. " Geo...

• Word Count: 2403
• Approx Pages: 10
• Grade Level: High School