Why do astronomers use a telescope?
- CliveLv 79 months ago
Because there is so much you can't see without one. Most things in the sky are far too dim to see without something to magnify them. Without telescopes, nobody would know that other planets have satellites, that there are other galaxies, or have much idea about our own galaxy. We would know only the planets out as far as Saturn, and only know them as moving dots.
When it comes to stars, magnification doesn't enable you to see them any better, it only enables you to see the dimmer ones at all. But without a telescope, you wouldn't even know they exist.
Then there are non-optical telescopes. The sky looks very different in radio, or infra-red or ultra-violet. Build something that can detect those and you can find out about even more that your eyes can't possibly see. For example, the Sun and Jupiter are very noisy in the radio spectrum and without a radio telescope, we'd never know that.
- Ronald 7Lv 79 months ago
To see further of course
- 9 months ago
Every profession has a set of tools... Astronomers use telescopes, computers, and spectrographs, as well as other instruments.
- nineteenthlyLv 79 months ago
Because things which are far away look very small.
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- SharonLv 69 months ago
The invention in 1608 by Hannes Lippershey of the (refractor) telescope finally made it possible to see details of the surface features of the Moon, planets and Sun, as well is some improved understanding of stars. Today no professional astronomer expects to be able to look through a telescope, as the professional models are not made to look through. Instead various technologically advanced recording devices are used, and are used for learning details of things far removed from our local planetary system, including stars, nebulas, galaxies.
- CarolOklaLv 79 months ago
So they can tell whether something is a planet or a star is one reason. A telescope with no eyepieces is a piece of hardware ware with no purpose.
Ask a biologist why they use a microscope. Geologists use microscopes, and planetary geologists use telescopes and microscopes.
- 9 months ago
In what way are you hinting that they are used?
- daniel gLv 79 months ago
Perfect for peeping at the girls in their rooms.
Good dust collectors or propping up your feet sitting back.
- Too-Da-Loo!Lv 79 months ago
Because they make great back scratchers.