The Hubble Telescope

Chapter Two: Scientific Discoveries 6

Chapter Three: Future Space Telescope Technology 9

The Hubble Space Telescoped launched into orbit in 1990 has circled Earth 58,000 times, zoomed in on nearly 25,000 celestial objects, and has provided more than 270,000 images of everything from comets smashing into Jupiter to faint light of galaxies near the end of the observable universe. Such data and information has provided scientists with a whole new picture of the universe, including its contents and its age and origins. The Hubble Space Telescope is a sophisticated space exploration device that carries a variety of sophisticated instrumentation onboard, from spectrographs and infrared cameras to radio wave transmission devices and solar array panels. The Hubble Space Telescope has provided many new and exciting discoveries about the universe, broadening scientistÆs knowledge of things like the age of the universe, the origin of galaxies, and the nature of formerly mysterious planets like Pluto and never-before-detected celestial bodies like brown dwarfs. Despite the capabilities and discoveries of Hubble, the telescope is designed to serve only fifteen years and is limited. Its limitations are being eliminated in new designs of space telescopes for future use. The most exciting and most promisi

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of the universe. Most of the visible light in the universe hails from galaxies that Hubble can see,ö (Cowen 1998, 1). CHAPTER THREE: Future Space Telescope Technology There are a number of new telescopes and space exploration devices being wrought from advances in technologies. So, too, such advances are due to information provided by the Hubble Telescope about the needs of such devices and the nature of space. Hubble is limited in that it cannot see more than the near-visible infrared spectrum. One of the reasons for this is that HubbleÆs temperature remains too warm. Knew telescopes for future space exploration have been designed to eliminate some of these flaws. The Space Infrared Telescope Facility (SIRTF) will overcome this issue by carrying enough liquid helium to keep the temperature at 450 degrees below zero (Freedman 1998). The SIRTF will be able to see through dust that Hubble cannot and reveal more celestial bodies, including newly formed stars. While the small mirror on the SIRTF will not match HubbleÆs light gathering capability, it will be able to see through dust and reveal objects that are too small to give off visible light, something outside HubbleÆs capability. However, the SIRTF will be only an appeti
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Approximate Word count = 4483
Approximate Pages = 18 (250 words per page)