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The first HUGE advantage is the ability to see objects without the obscurantism of the atmosphere. The atmosphere distorts and obscures a great deal of light from distant and dim objects. By placing the telescope OUTSIDE the atmosphere, this problem is eliminated. Also, the Hubble, being space-based, can observe phenomena that might be completely missed by land based telescopes because they occur during daylight hours at the land-based location. There is no daytime obscurantism of the stars from space.

The main disadvantage is the cost of repairing the Hubble (dollars and risk to human life). The other disadvantage is the limited lifetime. Hubble needs to use fuel to keep in orbit and to change orientation to point at a particular phenomenon of interest. There is only so much fuel on board, and it will eventually be exhausted. At that time, Hubble will cease to be a viable system.

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11y ago
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Q: What is the advantage and disadvantage of building the Hubble Telescope?
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