What is the height above sea level of chichester?

What measures the strength of earth's gravitational pull? Which is closer to the sun mercury or Venus? What is the streak for peridot? Why study of constellation important in astronomy? Is the term used to describe the transition from liquid water to water vapor? Can you give me two reasons why a spaceship requires less force to take off from the moon than to take off from the earth? Is the sun a larger star than all other stars? Who designed the first starburst clock? Should space travel continue? What would happend without a moon? Which are the two planets nearest to Earth? What is the heaviest element that a star can produce through fusion before going supernova? What is the name given to the sun's position at noon? Is Betelgeuse a red supergiant? What causes your ears to pop on an airplane? What day of the week will it be in 9000 days? What is the source of meteor showers? What is klystron mount? What layer extends upward from the altitude of 550 km to 1000km? What evidence proves that the sun is a second generation star?