![Astronomy 103 Final review session - Home | UW](http://s1.studyres.com/store/data/008079241_1-73d42baaae60675c5e814b9e7f0d9ce2-300x300.png)
Astronomy 103 Final review session - Home | UW
... Expansion of universe • Edwin Hubble observed that galaxies are all moving away from us • We now know that this is due to the expansion of the universe • Hubble’s Law related recession velocity and distance ...
... Expansion of universe • Edwin Hubble observed that galaxies are all moving away from us • We now know that this is due to the expansion of the universe • Hubble’s Law related recession velocity and distance ...
Introduction to the Earth
... from the center of the Universe because the Universe is expanding. The existence of RED SHIFT and the ...
... from the center of the Universe because the Universe is expanding. The existence of RED SHIFT and the ...
SUFFOLK COUNTY COMMUNITY COLLEGE
... molded our modern view of the Universe, even though these phenomena are outside of everyday experience. Starting with Galileo, and ending with Albert Einstein, it will show the student how the scientific process is performed, using observations of faint and distant object, whilst relating these obse ...
... molded our modern view of the Universe, even though these phenomena are outside of everyday experience. Starting with Galileo, and ending with Albert Einstein, it will show the student how the scientific process is performed, using observations of faint and distant object, whilst relating these obse ...
Order of Magnitude and Estimation
... 1. Give an estimate of the order of magnitude of the following a) The length of your arm in mm. b) The quantity of milk you drink in a year in cm 3. c) The mass of your backpack that contains your school materials in g. d) The diameter of a human hair in mm. e) The time you spend in school in a year ...
... 1. Give an estimate of the order of magnitude of the following a) The length of your arm in mm. b) The quantity of milk you drink in a year in cm 3. c) The mass of your backpack that contains your school materials in g. d) The diameter of a human hair in mm. e) The time you spend in school in a year ...
TheExpansionoftheUniverse
... As technology has improved we have able to more accurately calculate the expansion of the universe. As technology advances people will be able even more accurately find the distance of objects which will define more clearly Hubble’s constant. However this is also a problem as Hubble constant, will c ...
... As technology has improved we have able to more accurately calculate the expansion of the universe. As technology advances people will be able even more accurately find the distance of objects which will define more clearly Hubble’s constant. However this is also a problem as Hubble constant, will c ...
Evidence of the Big Bang and Structure of the Universe
... It is assumed that no object or energy can travel faster than light Light could circle the Earth 7 times in 1 second The universe is thought to be about 25 billion light-years in diameter ...
... It is assumed that no object or energy can travel faster than light Light could circle the Earth 7 times in 1 second The universe is thought to be about 25 billion light-years in diameter ...
The universe
... Measuring the distance through the universe: The distance between stars are very large, so the distance in the far space are not measured in kilometers, but they are measured in a unit called “light year”. Light year: It is the distance covered by light in one year and it is equal 300000 km per seco ...
... Measuring the distance through the universe: The distance between stars are very large, so the distance in the far space are not measured in kilometers, but they are measured in a unit called “light year”. Light year: It is the distance covered by light in one year and it is equal 300000 km per seco ...
1.1 Fundamental Observers
... time of the universe, the time for the Universe to double its size expanding at the present rate. A seemingly inevitable consequence of the universal expansion is that in the past everything in the universe must have been much closer together than it is today. Trace the history back far enough and a ...
... time of the universe, the time for the Universe to double its size expanding at the present rate. A seemingly inevitable consequence of the universal expansion is that in the past everything in the universe must have been much closer together than it is today. Trace the history back far enough and a ...
Chapter1.pdf
... view that the Earth was the most important place in the Universe and human beings the Universe’s most important creatures. (Also, at the time, most people believe the Earth was flat, not spherical, and that if you sailed on the ocean too far in one direction you would fall off the edge). • For the n ...
... view that the Earth was the most important place in the Universe and human beings the Universe’s most important creatures. (Also, at the time, most people believe the Earth was flat, not spherical, and that if you sailed on the ocean too far in one direction you would fall off the edge). • For the n ...
Document
... • In the basic scenario there is a simple relation between the density and the shape of space-time: Density Curvature 2-D example ...
... • In the basic scenario there is a simple relation between the density and the shape of space-time: Density Curvature 2-D example ...
Document
... the food of the Gods". These words by Ptolemy from around 125 A.D. are handed down together with his famous book The Almagest, the bible of astronomy for some 1500 years. They capture mankind's deep fascination with the movements of the heavens, and the miracles of the physical world. After the Baby ...
... the food of the Gods". These words by Ptolemy from around 125 A.D. are handed down together with his famous book The Almagest, the bible of astronomy for some 1500 years. They capture mankind's deep fascination with the movements of the heavens, and the miracles of the physical world. After the Baby ...
Astronomy Quiz #1 Answers
... -many galaxies existed beyond the Milky Way -almost all galaxies are moving away from each other ...
... -many galaxies existed beyond the Milky Way -almost all galaxies are moving away from each other ...
Origins of the Universe
... The Big Bang Theory • A theory for the creation of the universe • Scientists believe about 14 billion years ago, the universe was unimaginably compact, small, and dense • Universe began its expansion after a giant explosion, coined the Big Bang • It began expanding with unimaginable force from a ho ...
... The Big Bang Theory • A theory for the creation of the universe • Scientists believe about 14 billion years ago, the universe was unimaginably compact, small, and dense • Universe began its expansion after a giant explosion, coined the Big Bang • It began expanding with unimaginable force from a ho ...
The Solar System and our Universe
... • They can not tell us what is happening now, but what happened in the past. • Light from stars takes years to reach us & we have even detected light from stars formed soon after the Big Bang that has taken 14 billion years to reach us. ...
... • They can not tell us what is happening now, but what happened in the past. • Light from stars takes years to reach us & we have even detected light from stars formed soon after the Big Bang that has taken 14 billion years to reach us. ...
Chapter 1 Our Place in the Universe
... A great island of stars in space, all held together by gravity and orbiting a common center ...
... A great island of stars in space, all held together by gravity and orbiting a common center ...
LECTURE 2: I.Our Place in the Universe
... • A list of previously known facts about nature • A list of equations handed down from Ancient times • A set of laws that were discovered by Dead White ...
... • A list of previously known facts about nature • A list of equations handed down from Ancient times • A set of laws that were discovered by Dead White ...
Lecture - UMass Amherst
... New Year's Eve. All of human history is but a fleeting instant on the cosmic timescale. ...
... New Year's Eve. All of human history is but a fleeting instant on the cosmic timescale. ...
cosmology[1] - KarenConnerEnglishIV
... target—nothing at all. That is, a place in space that had no planets or stars or visible galaxies. The quietest, darkest place he could find. He was rewarded with an image of thousands of galaxies! The Hubble Deep Field image has become one of the most remarkable findings of the space age, and has a ...
... target—nothing at all. That is, a place in space that had no planets or stars or visible galaxies. The quietest, darkest place he could find. He was rewarded with an image of thousands of galaxies! The Hubble Deep Field image has become one of the most remarkable findings of the space age, and has a ...
final review sheet
... 5) Astronomers can determine the age of clusters by looking at the distribution of stars on the main sequence. 6) A brown dwarf is a type of dark matter called a WIMP. 7) Our Sun will one day end up a white dwarf. 8) Supernova 1987A was a Type II core collapse supernova which was the result of the c ...
... 5) Astronomers can determine the age of clusters by looking at the distribution of stars on the main sequence. 6) A brown dwarf is a type of dark matter called a WIMP. 7) Our Sun will one day end up a white dwarf. 8) Supernova 1987A was a Type II core collapse supernova which was the result of the c ...
Image Credit - Northwestern University
... Oldest Stars in M4 (Milky Way Globular Cluster). Stars in cluster form together. Brightest stars turn off first, fainter later. ...
... Oldest Stars in M4 (Milky Way Globular Cluster). Stars in cluster form together. Brightest stars turn off first, fainter later. ...
THE COSMIC DANCE
... This coming together creates of electrons and protons to make Hydrogen gives off light we call… MICROWAVES. This is how we know what the lumps of matter look like At 380,000 years after the Big Bang—The Recombination Era. ...
... This coming together creates of electrons and protons to make Hydrogen gives off light we call… MICROWAVES. This is how we know what the lumps of matter look like At 380,000 years after the Big Bang—The Recombination Era. ...
runaway - Astronomy & Astrophysics Group
... The galaxy is, in fact, nothing but a collection of innumerable stars grouped together in clusters. Upon whatever part of it the telescope is directed, a vast crowd of stars is immediately presented to view. Many of them are rather large and quite bright, while the number of smaller ones is quite be ...
... The galaxy is, in fact, nothing but a collection of innumerable stars grouped together in clusters. Upon whatever part of it the telescope is directed, a vast crowd of stars is immediately presented to view. Many of them are rather large and quite bright, while the number of smaller ones is quite be ...
Universe
![](https://commons.wikimedia.org/wiki/Special:FilePath/Ilc_9yr_moll4096.png?width=300)
The Universe is all of time and space and its contents. The Universe includes planets, stars, galaxies, the contents of intergalactic space, the smallest subatomic particles, and all matter and energy. The observable universe is about 28 billion parsecs (91 billion light-years) in diameter at the present time. The size of the whole Universe is not known and may be infinite. Observations and the development of physical theories have led to inferences about the composition and evolution of the Universe.Throughout recorded history, cosmologies and cosmogonies, including scientific models, have been proposed to explain observations of the Universe. The earliest quantitative geocentric models were developed by ancient Greek philosophers and Indian philosophers. Over the centuries, more precise astronomical observations led to Nicolaus Copernicus's heliocentric model of the Solar System and Johannes Kepler's improvement on that model with elliptical orbits, which was eventually explained by Isaac Newton's theory of gravity. Further observational improvements led to the realization that the Solar System is located in a galaxy composed of billions of stars, the Milky Way. It was subsequently discovered that our galaxy is just one of many. On the largest scales, it is assumed that the distribution of galaxies is uniform and the same in all directions, meaning that the Universe has neither an edge nor a center. Observations of the distribution of these galaxies and their spectral lines have led to many of the theories of modern physical cosmology. The discovery in the early 20th century that galaxies are systematically redshifted suggested that the Universe is expanding, and the discovery of the cosmic microwave background radiation suggested that the Universe had a beginning. Finally, observations in the late 1990s indicated the rate of the expansion of the Universe is increasing indicating that the majority of energy is most likely in an unknown form called dark energy. The majority of mass in the universe also appears to exist in an unknown form, called dark matter.The Big Bang theory is the prevailing cosmological model describing the development of the Universe. Space and time were created in the Big Bang, and these were imbued with a fixed amount of energy and matter; as space expands, the density of that matter and energy decreases. After the initial expansion, the Universe cooled sufficiently to allow the formation first of subatomic particles and later of simple atoms. Giant clouds of these primordial elements later coalesced through gravity to form stars. Assuming that the prevailing model is correct, the age of the Universe is measured to be 7001137990000000000♠13.799±0.021 billion years.There are many competing hypotheses about the ultimate fate of the Universe. Physicists and philosophers remain unsure about what, if anything, preceded the Big Bang. Many refuse to speculate, doubting that any information from any such prior state could ever be accessible. There are various multiverse hypotheses, in which some physicists have suggested that the Universe might be one among many universes that likewise exist.