1. (sometimes capital) new, recent, or a new or modern form or development: neoclassicism; neocolonialism. 2. (Geological Science) (usually capital) the most recent subdivision of a geological period: Neogene. [from Greek neos new]. Also, esp. before a vowel, ne-.
Although optical telescopes are the type most commonly used for stargazing and amateur astronomy, lots of astronomical research is done on telescopes that look at other wavelengths of light. Each of these wavelength ranges shows us something unique about the universe and allows us to view events and objects that can't be seen with human eyes.
Also, certain light rays can be used to see what objects in space are made of. Earth has a thick atmosphere, making it difficult to see details in objects being looked at in a telescope. While you could send lots of telescopes into space, the process takes time and money. Light rays like Infra Red can be used to cut through the atmosphere and allow you to see stars and planets on Earth's surface. Also, certain light rays can be used to see what objects in space are made of. Earth has a thick atmosphere, making it difficult to see details in objects being looked at in a telescope.