![]() Image left: American astronomer Edwin Hubble in 1924 - used the 100-inch Hooker Telescope. ![]() This suggested that the universe is expanding, unleashing a Pandora's box of seminal inquiries-such as the Big Bang theory-about the possible beginning and end of the universe-issues which are still being debated to this day. However, in 1924, American astronomer Edwin Hubble used the 100-inch Hooker Telescope (see image below) on Mount Wilson near Los Angeles, California, to observe billions of other galaxies besides our own Milky Way, almost all moving away from each other. Advances in spectroscopy, photography, and photometry increased telescope versatility, sensitivity, and discovery power.īy the turn of the 20th century, most astronomers believed that the observable universe consisted of one galaxy, our Milky Way Galaxy, an oasis of stars, dust, and gas in the vastness of space. Planets, stars, and nebulae which could not be seen by the naked eye were now being routinely noted and logged. Bigger and better telescopes were built all over the world. rebuffed the millennia-old conceit that the Earth is the center of the universe, spearheading the Scientific Revolution.īy the 18th century, the telescope would become the indispensable instrument for investigations of the cosmos. The telescope enhanced his vision and tempered his pride, as observations by Copernicus, Galileo and Kepler in the 16th and 17th centuries A.D. Since the dawn of civilization, man was limited by his vision and imagination about his understanding of the universe. ![]()
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