How did Harlow Shapley determine where the Centre of the galaxy lies quizlet?
How did Harlow Shapley determine where the Centre of the galaxy lies quizlet?
How did Harlow Shapley determine where the center of the galaxy lies? He plotted the distribution of globular clusters. I. It lies in the general direction of the center of the galaxy based on observations of globular clusters in the plane of the Milky Way.
What have we learned from the work of Harlow Shapley quizlet?
What have we learned from the work of Harlow Shapley and others about the location of the Sun in the Milky Way Galaxy? We are in the disk of the Galaxy, about 5/8 of the way from the center. William Herschel thought that the Sun and Earth were roughly at the center of the great group of stars we call the Milky Way.
How did Harlow Shapley measure where we are in the disk of the Milky Way galaxy?
Shapley correctly determined the galactic center of the Milky Way to be located in the constellation of Sagittarius. He did this by mapping out a three-dimensional distribution of the globular clusters.
How did Harlow Shapley measure where we are in the disk of the Milky Way galaxy quizlet?
Harlow Shapley mapped the Milky Way using the period-luminosity relationship for RR Lyrae stars. 21 cm radio waves allow us to map the distribution of hydrogen in spiral arms on the opposite side of the Galaxy.
Which method did Harlow Shapley use to find the distance to a few of the nearest Cepheid variables quizlet?
Harlow Shapley used pulsating RR-Lyrae variables as distance indicators to the globular clusters. He then deduced the distance and direction of the Milky Way’s center.
How did Harlow Shapley use the period-luminosity relationship to determine the size of the Milky Way galaxy?
How did Harlow Shapley use the period-luminosity relationship of RR Lyrae variables to determine the size of the Milky Way galaxy? He found the distances to globular clusters distributed about the center of the galaxy.
What objects did Harlow Shapley use to figure out the extent of the Milky Way and the location of its Centre?
Shapley also argued that spiral nebulae (spiral-shaped patches of light observed through telescopes) were nearby clouds of gas located well within the Milky Way. Shapley based his ideas on the size of the Milky Way on observations of globular star clusters.
What kind of galaxy is the Milky Way quizlet?
Our galaxy, the Milky Way, is a spiral galaxy so named because of the “spiral arms”. Clouds of interstellar gas and dust that fill the galactic disk, which obscures our view of most of the galaxy when we observe with visible light.
What did Harlow Shapley discover?
878 MildredHarlow Shapley / Discovered
What type of object did Harlow Shapley observe to determine the Sun’s location within the Milky Way galaxy group of answer choices?
globular clusters
In 1917, Harlow Shapley used the globular clusters in the Milky Way to gain a better understanding of the Milky Way Galaxy. He measured their positions and distances and plotted their locations on a two-dimensional chart.
What type of object did Harlow Shapley observe to determine the Sun’s location within the Milky Way Galaxy group of answer choices?
How did the Hershel’s estimate the shape and size of the Milky Way?
He estimated the size by measuring the apparent brightnesses of the faintest stars he could see. He estimated the shape by counting the numbers of stars in different directions on the sky.
What observations led Harlow Shapley to conclude that the Milky Way was vast and that we are not at the center?
What observations led Harlow Shapley to conclude that we are not at the center of the Galaxy? Shapley’s observations of globular clusters indicated that the globular clusters occupied a rough sphere centered on the galactic nucleus.
What did Harlow Shapley discover about globular clusters that allowed him to determine the size of the galaxy and the Sun’s location within it?
Since the clusters assumed a spherical arrangement, it was logical to conclude that they would cluster around the centre of the Galaxy; from this conclusion and his other distance data Shapley deduced that the Sun lies at a distance of about 50,000 light-years from the centre of the Galaxy; the number was later …
How did Harlow Shapley conclude that the Sun was not in the center of the Milky Way galaxy?
Shapley used the distribution of globular clusters in the galaxy to determine that the Sun was not at the center of the Milky Way.
What type of galaxy is the Milky Way?
spiral galaxy
The Milky Way is a huge collection of stars, dust and gas. It’s called a spiral galaxy because if you could view it from the top or bottom, it would look like a spinning pinwheel. The Sun is located on one of the spiral arms, about 25,000 light-years away from the center of the galaxy.
How did the Milky Way form?
In the simplest telling, it held that our Milky Way galaxy came together nearly 14 billion years ago when enormous clouds of gas and dust coalesced under the force of gravity. Over time, two structures emerged: first, a vast spherical “halo,” and later, a dense, bright disk.
What did Harlow Shapley conclude?
Harlow Shapley, (born November 2, 1885, Nashville, Missouri, U.S.—died October 20, 1972, Boulder, Colorado), American astronomer who deduced that the Sun lies near the central plane of the Milky Way Galaxy and was not at the centre but some 30,000 light-years away.
Who discovered the shape of the Milky Way?
Sir William Herschel
One of the most famous astronomers of the 18th Century was Sir William Herschel.
Who discovered that the Milky Way was a disk of stars?
Galileo
When Galileo turned his telescope on the Milky Way, early in the 17th century, he found it was made of many, many faint stars, each of them individually too faint to be seen by the naked eye. Galileo’s discovery led to the hypothesis that the Sun is embedded within a disk of stars.
What did scientists believe about the Milky Way?
They believed that the Milky Way was one of billions of galaxies in the universe. B. They believed that the Milky Way was the entire universe. C. They believed that, because the Sun was at the center of the Milky Way, it was impossible to see the rest of the universe.
What is the Milky Way?
The Milky Way is simply our edge-on view of our home Galaxy. Select one: True False True RR Lyrae stars pulsate, but with shorter periods and lower luminosities than Cepheids.
What perception of the Milky Way Galaxy did astronomers have in 1900?
Incorrect E. zero-age main sequence. high mass. What perception of the Milky Way Galaxy did astronomers have in 1900? Select one: A. They believed that the Milky Way was one of billions of galaxies in the universe.
Why can Herschel only see part of the Milky Way?
the dust that extends throughout the disk of the Galaxy only allowed Herschel to see the small part of the Milky Way that surrounds us Nice work! You just studied 26 terms!
