There is less dust in space than earth.
Atmospheric and environmental interference.
Spitzer gets a much clearer view of the wavelengths that are blocked by the Earth's atmoshere
Atmospheric and environmental interference.
Because cities have too much light pollution. They need to be in the dark - the darker the better. Also, when a ground based optical telescope (as opposed to a space telescope like the Hubble) looks up into the sky any image has to pass through the earth's atmosphere. In a city the air is often polluted and dusty, so looking through a telescope based there would produce a poor image - a bit like looking though a dirty window. On a mountain top the air is not only clean, but the atmosphere is less deep there because of the height of the mountain. The air above is less depth and cleaner so there is a better chance of a clearer image.
I think that a land-based telescope has the atmosphere as an obstacle for good observations, while the space telescope hasn't, so the images taken are more defined. Moreover, the earth orbit of the space telescope allows it to get a wide range of angles. Text by Jim West70
Hubble does not have to contend with the atmosphere of the earth which bends and distorts images from earth-based telescopes.
Outside the atmosphere the telescope has no interference, precisely by the atmosphere. The telescope can get a clearer picture, and see certain wavelengengths that don't reach Earth.Outside the atmosphere the telescope has no interference, precisely by the atmosphere. The telescope can get a clearer picture, and see certain wavelengengths that don't reach Earth.Outside the atmosphere the telescope has no interference, precisely by the atmosphere. The telescope can get a clearer picture, and see certain wavelengengths that don't reach Earth.Outside the atmosphere the telescope has no interference, precisely by the atmosphere. The telescope can get a clearer picture, and see certain wavelengengths that don't reach Earth.
Atmospheric and environmental interference.
You are probably referring to the Hubble space telescope. The basic idea is that a telescope in space has a clearer view, because it doesn't have atmospheric interference. Thus, the hubble telescope, while only being 2.4 meter in diameter, can get clearer pictures than a 5-meter telescope on Earth, for example. Also, it can capture some wavelengths that don't get to the Earth's surface, because they are almost completely absorbed by the atmosphere.
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Spitzer gets a much clearer view of the wavelengths that are blocked by the Earth's atmoshere
Atmospheric and environmental interference.
not affected by earth's atmosphere
Because it doesn't have to look through any air to see the things it wants to see.
The Hubble is in orbit around planet earth.
In space, however, telescopes are able to get a clearer shot of everything from exploding stars to other galaxies. Another disadvantage for ground-based telescopes is that the Earth's atmosphere absorbs much of the infrared and ultraviolet light that passes through it.
In outer space, you can see the Earth, as well as planets, moons, the sun, and other stars, without being hindered by the Earth's atmosphere. It is much clearer, and having the Hubble space telescope in Earth orbit allows it to see much more than any optical telescope could ever see on the Earth's surface.