Because the atmosphere is not exactly transparent. It looks that way to us because our eyes are designed to see the wavelengths that move easiest through it. However, air molecules tend to warp, absorb, or otherwise limit our ability to see things in space clearly. The Hubble, and other space-based telescopes, are above the limiting influence of our atmosphere, and as such can see the light from distant objects exactly as they arrive.
Hubble does not have to contend with the atmosphere of the earth which bends and distorts images from earth-based telescopes.
Even in excellent weather, telescopes on Earth are affected by the thickness of the atmosphere. This causes the air to be slightly refractive, meaning that the air bents the light as it comes through the atmosphere, and distorts the image that we are trying to see.The Hubble Space Telescope is much smaller than many terrestrial telescopes, but because there is no atmospheric distortion, the images can be far clearer and can be magnified more.
The problem with ground based telescopes is that the atmosphere distorts images, The Hubble space telescope is above the atmosphere and therefore can view with much better clarity.
When they started getting images back from the Hubble, thee was a distortion that should not have been there, and it was keeping the telescope from capturing really good images. It later turned out that there had been a mistake made in grinding the curved mirror.
Launched on April 24th 1990 the purpose of the Hubble space telescope is so astronauts and astronomers and even the public can discover new images of our Galaxy and other Galaxy's and other planets
Hubble does not have to contend with the atmosphere of the earth which bends and distorts images from earth-based telescopes.
HUBBLE
Because of the atmosphere. The atmosphere distorts light (this is also why stars 'twinkle'), where as the HST, free from this, faces no interference.
yes, because it doesnt have the atmosphere in the way, the atmosphere distorts the images taken by ground based-telescopes because of the refraction of light. The hubbles telescope can provide clearer and more accurate images without this barrier in the way.
The Hubble Telescope uses both mirrors and lenses to focus on images.
Yes, telescopes in space, like the Hubble Space Telescope, produce the clearest images because images from ground-based telescopes get distorted when the light passes through the atmosphere.
The (GMT) Giant Magellan Telescope .
We understand earth and space more because of it.
adaptive optics
Even in excellent weather, telescopes on Earth are affected by the thickness of the atmosphere. This causes the air to be slightly refractive, meaning that the air bents the light as it comes through the atmosphere, and distorts the image that we are trying to see.The Hubble Space Telescope is much smaller than many terrestrial telescopes, but because there is no atmospheric distortion, the images can be far clearer and can be magnified more.
The problem with ground based telescopes is that the atmosphere distorts images, The Hubble space telescope is above the atmosphere and therefore can view with much better clarity.
So they can get clearer images