On the left is one of the Beijing ancient observatory, one of the oldest in the world. Built during the Ming Dynasty(about A.D. 1442), the Beijing ancient observatory engaged in astronomical observations for nearly 500 years, from the Ming dynasty to 1929. It has maintained the longest continuous observation records among all the existing observatories in the world.
And on the right is the world's most famous telescope, Hubble Space Telescope, launched in 1990. It was launched by NASA and European Space Agency, and currently orbiting earth. Hubble is the first major optical telescope to be placed in space. Above the distortion of the atmosphere, far far above rain clouds and light pollution, Hubble has an unobstructed view of the universe. Scientists have used Hubble to observe the most distant stars and galaxies as well as the most distant stars and galaxies as well as the planets in solar system. Hubble's launch in 1990 marked the most significant advance in astronomy since Galileo's telescope.
With today's scientific progress, we have already been able to answer a lot of questions concerning the universe. For example, by using data from NASA's Great Observatories, astronomers have found the best evidence yet for cosmic seeds in the early universe that should grow into supermassive black holes. New finding suggest that some of the first black holes formed directly when a cloud of gas collapsed, bypassing any other intermediate phases, such as the formation and subsequent destruction of a massive star.
Obviously, the universe is too great for human being to explore it all at this stage. The space explorations the humankind has had so far is still like a drop in the sea.
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