Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. To peer into our cosmos' unknown depths, astronomers must deploy new tools - and the classic new tool is a larger telescope. Telescopes in space, like the Hubble Space Telescope , are much smaller but avoid the Earth's atmosphere blurring out fine detail. HET 's huge size, on the other hand, allows it to see very dim objects and determine their spectrum. Only smaller focusing instruments suspending above the primary move to track an astronomical object.
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