birth of time and space. Hubble’s Law‚ concerning the directional movement of galaxies‚ further proves the expansion of the universe. It is said that the universe may well be “expanding” still at an enormous rate‚ and observations have shown this to be true. This is in agreement with the Big Bang Theory as an expansion means there was a starting point and time for the universe. Through the Doppler Shift effect‚ galaxies have been observed to be in ‘redshift’ when viewed from Earth‚ meaning they are
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Andromeda is the name of my country and it is located in the middle of the Atlantic Ocean‚ far from anywhere else. The citizens have been fighting for what religion should be predominant in the country. I have chosen that they have religious freedom. Everyone can be free and not fight over a religion anymore. No one will be unhappy with a religion forced onto them‚ and there are so many religions to follow. People won’t have to fight‚ because some people might want to follow Judaism‚ and y usually
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Quasars A Quasi-stellar radio source‚ also known as a quasar‚ is an extremely distant nucleus to an active galaxy. They are the furthest objects away from our galaxy that can be seen‚ but are visible to us because they are the brightest matter in our universe. Quasars are known to have an extremely high redshift. Though we have not been observing quasars for long enough to determine how they are born‚ they are believed to have been formed by supermassive black holes consuming an enormous amount
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Astronomers from all over the world worked together to make the observations that led to their conclusion that the universe is dying. The study was conducted as part of the Galaxy and Mass Assembly (GAMA) survey‚ the largest survey of its type to have ever taken place. The scientists in the survey measured 221‚373 galaxies to
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and 1970s‚ astronomer Vera Rubin was observing spiral galaxies. She was interested in how they rotate‚ because you can learn a lot about a galaxy that way. Think about the Solar System. Back in the 1600s‚ Johannes Kepler figured out that the farther a planet is from the Sun‚ the slower it orbits. Isaac Newton put numbers to that‚ calculating the strength of the Sun’s gravity‚ which means we could in turn get the Sun’s mass. Same with galaxies. If you can measure how they rotate‚ how rapidly gas clouds
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doomsday events may range from a major disruption of human civilization‚ the extinction of humanity‚ the extinction of all life on the planet Earth‚ the destruction of the planet Earth‚ the annihilation of the Solar system‚ to the annihilation of our galaxy or even the entire universe. Even though the term “doomsday” is taken from Christian eschatology referring to the Last Judgment‚ the term “doomsday event” as used here refers to alleged realistic dangers from natural or man-made causes‚ to be distinguished
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Parallax * Parallax is the apparent movement of a nearby object when it’s viewed from 2 different points. * The farther the star the smaller the angle * Distance from one side of earth orbit to other is 300km. * distance from earth to sun is 1 AU * Can only measure close stars reliably. * Parallax is very small due to distance to stars. Makes it harder to measure accurately. * Relies on no assumptions‚ only earth’s geometry around the sun. * Uses simple trigonometry
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The Hubble Space Telescope was created by and named after astronomer Edwin P. Hubble. He was known for his creation of Hubble’s Law which is used to calculate the rate at which the universe is expanding. He is also known for his discovery of the galaxies that are outside the Milky Way. The Hubble Space Telescope is a large telescope that is placed in orbit around the earth. Scientists have figured out that by placing a telescope in space‚ putting it outside of earth’s atmosphere‚ a telescope can
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Galaxy’s disk (fyi: Galaxy = Milky Way; galaxy = any other galaxy ) can be approximated by an exponential function. If stars dominate the mass distribution of the disk‚ we can then say that the mass distribution of the disk follows an exponential function‚ like this: Σ(r) = Σ0 e−r/h ‚ where h is just a scaling factor‚ a constant. Using this function‚ derive an analytic expression for how the orbital (circular) velocity of the stars dependence on the distance to the center of the galaxy‚ i.e.‚ Vc =
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meaning takes the mind into a mysterious spectrum. The very foundation of Cosmology began with Astronomer Edwin Hubble in 1929. He discovered that other galaxies existed in the universe and determined that these galaxies were moving away from each other at a rate that was constant with the distance between them. The farther away from Earth the galaxy was‚ the faster they would be traveling away from us. In theory‚ this also proved that universe was expanding. This discovery assisted the profound astronomer
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