Basics scientific notation for distances Earth-Sun distance = 93 million miles = 8.3 light minutes = 1 AU Celestial Spheres & Motions of Stars Zenith- point on celestial sphere directly overhead Nadir- point on celestial sphere directly below Celestial poles- either of two points at which extensions of earth’s axis intersect celestial sphere Circumpolar stars- stars that never set at a given latitude; all stars between Polaris and northern horizon Diurnal motion of stars Means daily Stars
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Luka Klikovac When the dust unsettles A shroud of grainy particles veils the heart of most galaxies‚ helping to make stars‚ planets and even us. But where did it all come from? Stuart Clark investigates T HE universe‚ it seems‚ has the same problem I have. Dust‚ everywhere. Looking round as I type this‚ I find myself wondering where on earth it all comes from. Just how does it accumulate without invitation on every surface‚ in every nook and cranny? Increasingly‚ astronomers can
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up having to leave the university he was attending before earning his degree. When I first think of Galileo I think of the telescope and his invention of it but he was actually not the first person to create it. The earliest signs of a telescope come from a lensmaker named Hans Lippershey in 1608. Yet‚ Galileo modified his design and was the first person to use a telescope to study the sky. Some of Galileo’s first discoveries were the moons of Jupiter and the earth’s moon. These are also the discoveries
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thermometer. He also published The Little Balance‚ which is what brought him to the attention of the scholarly world. Galileo furthered mankind’s understanding of astronomy‚ applied science‚ as well as making significant improvements to the telescope. He pointed his telescope toward the night sky and discovered 4 moons around Jupiter that are now called the Galilean Moons. He would also use his understanding of ocean tides to make an argument for the fact that the earth moves around the sun‚ not the opposite
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to the rank of Major. After the war‚ he did take a job at Mt. Wilson. While working at Mt. Wilson‚ Hubble proved that there were other galaxies existed‚ outside the Milky Way. By taking many photographs through the 100-inch reflecting Hooker telescope he devised a classification system for the various galaxies he observed. He divided galaxies into elliptical‚spiral‚barred spirals‚ and irregular galaxies.Not only that but‚ he sorted the galaxies by shape‚brightness‚ and distance; it was then he
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astronomers discovered the planet of Neptune because they also noticed a change in gravity with the other planets .This planet is also causing a clustering of asteroids and comets in the Kuiper Belt.The astronomers used the space-based Kepler Mission Telescope to see the changes and to locate where this planet might be.There are about 2‚000 identified planets that are surround our solar system but none are a big deal because there is nothing unique about them like Planet Nine.Planet Nine is different from
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away‚ but it is possible for us to explore the planet someday. This newfound planet is also a “transiting” world‚ meaning it crosses in front of its host star from our perspective. Of course we can’t see it from Earth‚ even with the most powerful telescopes‚ because its star so bright in comparison. Imagine trying to see a bird descend from the sky in the same line of sight as the sun. SO HOW DO WE DETECT EXTRASOLAR PLANETS?
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The extreme brightness of the O-type and B-type stars‚ coupled with the Earth’s atmosphere‚ has always made high-resolution imaging of the star-forming region difficult. But recent advances in adaptive optics and the repair of the Hubble Space Telescope have allowed for incredible detail into the center of the dust cloud. 3 The technological advances have also helped reveal several faint stars within the
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It’s just sugar‚ right? Candy -- kids’ stuff. Well‚ don’t be too sure. In the hands of top engineers and scientists‚ ordinary sugar is doing some extraordinary things. Circus Candy Inspires a Medical Miracle Talk about sweet science; medical researchers are building artificial body parts using (believe it or not) cotton candy. If you’ve ever eaten it‚ you know how tangled (and sticky!) cotton candy can be. Those traits come via some surprising science. Cotton candy is made from almost pure sugar
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The telescope was invented by Galileo in 1609 and was initially used to observe ships pulling into port later‚ he luckily aimed it towards the heavens and found he could observe the different moons of Jupiter. These telescopes have been magnified by a thousand times to see a total of 73‚321‚200‚000‚000 miles farther than the moons of Jupiter. This also helped prove
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