Since Galileo directed his telescope at the starry night in 1609 and found that the cloudy patch above us was not a cloud but a "river" of uncountable stars - the Milky Way, our home galaxy - mankind has been improving on techniques to grasp the universe. We've constructed increasingly more powerful telescopes and installed them on mountaintops, far from the dazzling lights of cities. But the launch of the Hubble Space Telescope in 1990 was the first time we'd launched a telescope into space, beyond the distorting effects created by viewing through the Earth's atmosphere.
Orbiting around 350 miles above Earth and orbiting the globe more than 5,000 times a year, Hubble has made over 1.3 million observations, showing the tremendous extent of the expanding cosmos beyond our solar system. In this book, you will learn to understand HSP MORE