I really do not know, but Hypotheticaly it was originaly made in 1687 march 5. oh and about the world ending it was made originaly made never to end, but from the worlds apocolyps it may end in a.e. (which is after earth) so don't believe other people saying the world will end in 2012 the higg's boson will definitly not be a faliure because steven Hawkins and other smartest people alive will make the higg's boson so do not be afraid.
They are too big and heavy for it to be possible to launch them into space.
Optical telescopes are placed high to avoid having to look through the thickest part of the atmosphere. Radio telescopes are place in valleys to avoid the effects of man-made electrical noise in the telescope.
Astronomers use radio telescopes, infrared telescopes, and space-based telescopes to map the shape of the Milky Way. They measure the positions and motions of stars, gas, and dust to create a three-dimensional map of our galaxy.
That is because radio waves pass through clouds so radio astronomers do not have to wait for a clear sky.
Telescopes are instruments used by astronomers. The first person to do this was Galileo.
Astronomers use telescopes to study stars and planets by capturing light from these celestial objects and analyzing it. They can gather data on the properties of stars and planets, such as their temperature, composition, and distance from Earth, to deepen our understanding of the universe. Telescopes come in various forms, such as optical telescopes, radio telescopes, and space telescopes like the Hubble Space Telescope.
Nowadays, the bulk of the work astronomers do is on computers. They spend a small portion of their time at telescopes actually taking data. Astronomically-useful telescopes rarely have eyepieces you can look through. Radio, ultraviolet, or infrared telescopes collect light that you can't even see with your eye! Telescopes that collect visible light often have electronic cameras called CCD cameras that create an image in a computer. Many telescopes are used to create a spectrum (the light is split into a rainbow, and the brightness of each color is measured). Radio telescopes record signals that astronomers can reconstruct using a computer to make an image or a spectrum.
Radio telescopes extend the sense of sight by detecting and measuring radio waves emitted by celestial objects in space. This allows astronomers to observe objects and phenomena that are not visible with optical telescopes.
they use space probes,satellites,and of coarse,telescopes.
The primary problem overcome by radio interferometry is the limited resolution of individual telescopes. By combining signals from multiple telescopes, interferometry creates a virtual telescope with a larger diameter, which improves the resolution and allows astronomers to see finer details in the radio sources being observed.
The telescope wasn't invented until about 1604, so "early" astronomers had no telescopes.
radio waves. Of course they also use very big optical telescopes.