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Top Galaxy Stories Of The Week

Top Galaxy Stories Of The Week

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Gamma rays are photons of light with very high energies. These gamma rays came from a galaxy known as PKS 1441+25, which is a rare type of galaxy known as a blazar. At its center ...

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Top Solar System News Of 2015

Top Solar System News Of 2015

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Humanity's grasp on statistics may be seriously underestimating our estimates of how big hypothetical aliens may be. Here I will share the top 3 stories on solar system of 2015. ...

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Parts of a Telescope

Parts of a Telescope

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Without telescopes, we would know incalculably less about the universe beyond Earth than we do today. While these tools have come a long way since Galileo's 16th-century ...

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How to Use a Reflector Telescope

How to Use a Reflector Telescope

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Suppose you have bought a fine guitar with a lovely sound and are learning to play it. But after a while, you notice that it has gone slightly out of tune. What do you do? Learn ...

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What is the Difference between Refractor and Reflector Telescopes?

What is the Difference between Refractor and Reflector Telescopes?

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Refractor telescopes are telescopes that use lenses to gather and focus light. Refractors deliver sharp, high-contrast images with crisp views of the moon, planets and stars. ...

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Books on Astronomy