how did hubble tell that galaxies were moving apart from each other
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How did Hubble determine that other galaxies were receding from each other and...? Best Answer: Instruments on Hubble can measure Doppler's Shift of the light of galaxies. If the galaxies are moving away from us there is a Red shift of the light. And at what angle.If the galaxies are moving toward us, there is a Blue shift in the light. And at what angle.Then use semi-complex math to figure how the galaxies are moving in their calculated position in the Universe.est Answer: Instruments on Hubble can measure Doppler's Shift of the light of galaxies. If the galaxies are moving away from us there is a Red shift of the light. And at what angle.
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Hubbleâs High-Definition Panoramic View of the Andromeda Galaxy Hubble’s High-Definition Panoramic View of the Andromeda Galaxy. This sweeping bird's-eye view of a portion of the Andromeda galaxy (M31) is the sharpest image ever taken of our galactic next-door neighbor. Credits: NASA, ESA, J. Dalcanton, B.F. Williams, and L.C. Johnson (University of Washington), the PHAT team, and R. Gendler.
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How Many Galaxies Are There? As the Hubble telescope received upgrades to its instruments, astronomers repeated the experiment twice. In 2003 and 2004, scientists created the Hubble Ultra Deep Field, which in a million-second exposure revealed about 10,000 galaxies in a small spot in the constellation Fornax. In 2012, again using upgraded instruments, scientists used the telescope to look at a portion of the Ultra Deep Field. Even in this narrower field of view, astronomers were able to detect about 5,500 galaxies. Researchers dubbed this the eXtreme Deep Field.
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- Cerebral palsy is one example of a condition in which oral neuromuscular control may be impaired, resulting in drooling. Other medical conditions that may cause drooling because of swallowing problems include Down syndrome, autism, ALS, stroke, and Parkinson's disease. Drooling is common in infants because of immature muscular control. Medically, drooling is referred to as ptyalism, and an excess of saliva is known as sialorrhea.
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- 1 CBR is consistent with an expanding and cooling Universe. 2  Right after the Big Bang, the temperature of the Universe was in the millions of degrees and the CBR peaked in the gamma-ray part of the electromagnetic spectrum. The Hubble Law is the observation that the recessional velocity of distant galaxies (measured by their redshift) is proportional to their distance from the observer. 2  This simple model/activity can help us understand this phenomenon. 3  The Hubble Law implies that:
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How far away is a galaxy whose recessional speed is 5000 km/s? Answer in Mpc.? (1)] where v is the galaxy's velocity (in km/sec), d is the distance to the galaxy (in megaparsecs; 1 Mpc = 1 million parsecs), and Ho is the proportionality constant, called The Hubble Constant. Hubble's Law states that a galaxy moving away from us twice as fast as another galaxy is twice as far away.
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- Shapley observed a number of globular clusters and discovered that the center of the Milky Way is some distance (now known to be 8.5kpc) from the Sun. Shapley's Method: 1) Observe globular clusters which are visible over large distances.
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Gravitational Waves Detected, Confirming Einsteinâs Theory A team of scientists announced on Thursday that they had heard and recorded the sound of two black holes colliding a billion light-years away, a fleeting chirp that fulfilled the last prediction of Einstein’s general theory of relativity.
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The Hubble Space Telescope The Hubble Space Telescope (HST) is the most famous-and probably most successful-space observatory ever flown. The 11 tonne telescope was placed into a 570 km high orbit around Earth by the Space Shuttle in April 1990. Circling our planet every 96 minutes, the HST has so far travelled some 5 billion km. Hubble has sent back a huge amount of scientific data and incredibly detailed images of every type of object in the sky. By autumn 2009, it had made nearly 900,000 observations and snapped over 570,000 images of more than 29,000 objects.
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How Fast is the Universe Expanding? On the other hand, dark energy drives the universe towards increasing rates of expansion. The current rate of expansion is usually expressed as the Hubble Constant (in units of kilometers per second per Megaparsec, or just per second). Hubble found that the universe was not static, but rather was expanding!
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Hubble Essentials: About Edwin Hubble The realization that the Milky Way is only one of many galaxies forever changed the way astronomers viewed our place in the universe. But perhaps his greatest discovery came in 1929, when Dr. Hubble determined that the farther a galaxy is from Earth, the faster it appears to move away.
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Astronomy Chapter 20 Why do we use Hubble's law to estimate the distances of most distant galaxies, rather than using white dwarf supernovae in all cases? We have not observed white dwarf supernovae in most galaxies. Imagine that radar had never been invented and that we instead had to rely on a less reliable method of measuring distances in our solar system. If that method led us to underestimate the Earth-Sun distance by 10%, how would it affect other measurements in the distance chain?
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Hubble's law The value of the Hubble constant is estimated by measuring the redshift of distant galaxies and then determining the distances to the same galaxies (by some other method than Hubble's law). Uncertainties in the physical assumptions used to determine these distances have caused varying estimates of the Hubble constant.
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Why can Hubble get detailed views of distant galaxies but not of Pluto? Now that we've done that, we can plug in the actual numbers. 1  For the galaxy, 50,000 light-years / 72 million light-years = 0.00069. 2  For Pluto, 2400 km / 4675 million km = 0.00000051. 3  Take the ratio of those two and you'll see that the galaxy appears 1300 times bigger than Pluto.
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How We Know How Many Galaxies Are In The Universe, Thanks To Hubble Tech 4/24/2015 @ 3:35PM 47,522 views. How We Know How Many Galaxies Are In The Universe, Thanks To Hubble. As the Hubble Space Telescope celebrates its 25th anniversary, it’s easy to take for granted all we’ve learned thanks to its incredible discoveries.
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Depression Often Starts in Childhood In fact, depression affects as many as one in every 33 children and one in eight adolescents, according to the Federal Center for Mental Health Services. There is no one thing that causes depression in children, according to the NMHA's Children's Mental Health Matters campaign.
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- v = Ho * d, where v is the galaxy's velocity (in km/sec), d is the distance to the galaxy (in megaparsecs; 1 Mpc = 1 million parsecs; 1 parsec is approx 3.26 light years, the distance that light travels in 3.26 years), and Ho proportionality constant, called The Hubble constant.
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How many galaxies are in the Hubble Ultra Deep Field? The Hubble Ultra Deep Field is a million second exposure into an area of the universe revealing numerous galaxies as far away as 13.7 billion light-years. By our reckoning, it … is within a few hundred million years of the origins of the universe.
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- On the other hand, dark energy drives the universe towards increasing rates of expansion. The current rate of expansion is usually expressed as the Hubble Constant (in units of kilometers per second per Megaparsec, or just per second).
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The Farthest Visible Reaches of Space Abell 1835 by the Hubble, Credit: NASA. Also in 2004, a team using both the Hubble Space Telescope and the Keck Observatory discovered a galaxy that is believed to be about 13 billion years away from us. It was found when observing the galaxy cluster Abell 2218. The light from the distant galaxy was visible because of gravitational lensing.
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'X' shape in Milky Way confirmed via Twitter Perhaps the most famous image from the Hubble Space Telescope (HST) is that of the Crab Nebula. A nebula is a mixture of hot gas, dust and simple elements like hydrogen and helium. The Crab Nebula is approximately 6,500 light-years from Earth in the constellation Taurus.
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- In the next chapter you will see that the expansion of the universe is the expansion of space itself---the galaxies are not moving through space, but, rather, they are being carried along with the expansion of space. For now, use the figure above to see how a uniform expansion gives us the Hubble Law.o the astronomers on galaxy (c), galaxy (a) is moving away at 1,540 kilometers/second and galaxy (b) is moving away at 770 kilometers/second. Their home galaxy (c) appears to be at rest. You can use similar reasoning to show that everybody will also get the same numerical value for the Hubble constant.
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Farthest Known Galaxy in the Universe Discovered The galaxy MACS0647-JD (inset) appears very young and is only a fraction of the size of our own Milky Way. The galaxy is about 13.3 billion light-years from Earth, the farthest galaxy yet known, and formed 420 million years after the Big Bang.Image taken by Hubble Space Telescope on Nov. 29, 2011, and released Nov. 15, 2012. Credit: NASA, ESA, and M. Postman and D. Coe (STScI) and CLASH Team View full size image.his close-up view shows the galaxy MACS0647-JD, the farthest object yet known, as it appears through a gravitational lens imaged by the Hubble Space Telescope. The galaxy is 13.3 billion light-years from Earth and formed 420 million years after the Big Bang.
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- 1 The galaxy light becomes smoother with distance as there are more stars averaged in each square arcsecond, and this can be quantified as a distance indicator given suitable assumptions. 2  Tully-Fisher relation relates the velocity width and luminosity of spiral galaxies.
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Messier 31 This error was not discovered until 1953, when the 200-inch Palomar telescope was completed and had started observing. Hubble published his epochal study of the Andromeda nebula as an extragalactic stellar system (galaxy) in 1929 (Hubble 1929). At modern times, the Andromeda galaxy is certainly the most studied external galaxy.
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Dark matter As the dark matter and baryons clumped together after recombination, the effect is much weaker in the galaxy distribution in the nearby universe, but is detectable as a subtle (~ 1 percent) preference for pairs of galaxies to be separated by 147 Mpc, rather than 130 or 160 Mpc, called the BAO feature.