What kind of technology allows us to study stars and space?

How does gravity and pressure keep the molecules in balance in a nebula? What natural event directly results in the periodic cleaning of the atmosphere? How does Jupiter protect Earth from potential threats in space? Why does the author call the decision to land on the moon an all important final decision? What is neil Armstrong doing right now in 2008? Which statement describes the general path the sun takes as it appears to move across the sky for an observer in new york state? Does xenon have luster? What was the English calender year for vikram samvat year 1976? How do you say astronaut in Chinese? What was the name of the last man standing on the moon? What is the name of the first manned flight in space? Does moon sand come from the real moon that is in space? What phase of the moon is full moon? Which of the following planets have the maximum number of satellites? How many light years away is the closest planet to earth? How do a constellation act like an address? What do the first four outer planets have in common? Do real diamonds sparkle rainbow colors? A high thin cloud made up of ice crystals? What are all the colors a star can be?