When it comes to telescopes, it’s more common to hear about optical rather than radio ones. Optical telescopes work by collecting light and bouncing it toward what’s being looked at through the eyepiece. As reviewed by Telescopic Watch, Celestron is one of the leading and best optical telescopes on the market.
Radio Telescopes work differently, however. They rely on wavelengths they collect and astronomers use them to form an image of what they are trying to look at.
Astronauts are space travelers and so are cosmonauts. Why are they referred to with different titles? Reason in nationality. Space travelers from today’s Russia and erstwhile Soviet Union were called…Read Full Article
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