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Cosmology 2 - schoolphysics
... 16. Describe the structure of our galaxy and state the approximate position of the Sun in the galaxy. 17. Describe the structure of three different types of galaxy. 18. What is Olbers’ paradox and how can it be resolved. 19. What is meant by the Cosmological principle? 20. What is Hubble’s Law? (Ex ...
... 16. Describe the structure of our galaxy and state the approximate position of the Sun in the galaxy. 17. Describe the structure of three different types of galaxy. 18. What is Olbers’ paradox and how can it be resolved. 19. What is meant by the Cosmological principle? 20. What is Hubble’s Law? (Ex ...
Watch the episode titled “The Milky Way” from the series “The
... When we look at the Milky Way, what is it that we are actually seeing? To what does the astronomer, Michelle Thaller, compare the Milky Way? How long does it take Earth to move around the galaxy? About how many galaxies reside in our Local Group? ...
... When we look at the Milky Way, what is it that we are actually seeing? To what does the astronomer, Michelle Thaller, compare the Milky Way? How long does it take Earth to move around the galaxy? About how many galaxies reside in our Local Group? ...
Earth in space
... all matter and space was created and moved outward in all directions at the speed of light (300 million m/sec), masses of gas cooled and condensed and… ...
... all matter and space was created and moved outward in all directions at the speed of light (300 million m/sec), masses of gas cooled and condensed and… ...
Astronomy 104: Homework Set 6 Due: Wednesday, April 1, 2015
... Earth. Use the relation between brightness (flux), luminosity and distance (see Destination 7) to determine the ratio of the distance to M 31 and the distance of the LMC? If the LMC is 50 kpc distant, how far is M 31 from Earth? Is your result with 10% of the value for the distance of M31 given in D ...
... Earth. Use the relation between brightness (flux), luminosity and distance (see Destination 7) to determine the ratio of the distance to M 31 and the distance of the LMC? If the LMC is 50 kpc distant, how far is M 31 from Earth? Is your result with 10% of the value for the distance of M31 given in D ...
Astrophysics Outline—Option E
... Suggest that the red-shift of light from galaxies indicates that the universe is expanding E.4.4 Describe both space and time as originating with the Big Bang E.4.5 Describe the discovery of cosmic microwave background (CMB) radiation by Penzias and Wilson E.4.6 Explain how cosmic radiation in the m ...
... Suggest that the red-shift of light from galaxies indicates that the universe is expanding E.4.4 Describe both space and time as originating with the Big Bang E.4.5 Describe the discovery of cosmic microwave background (CMB) radiation by Penzias and Wilson E.4.6 Explain how cosmic radiation in the m ...
11.3.1 Grade 6 Standard 4 Unit Test Astronomy Multiple Choice 1
... 6. How long will it take before they can see the other constellation? 7. What are two ways this diagram is incorrectly scaled? ...
... 6. How long will it take before they can see the other constellation? 7. What are two ways this diagram is incorrectly scaled? ...
Topic Outline - Physics Rocks!
... Define apparent brightness and state how it is measured. Wien’s law and the Stefan-Boltzmann law E.2.5 Apply the Stefan–Boltzmann law to compare the luminosities of different stars. E.2.4 ...
... Define apparent brightness and state how it is measured. Wien’s law and the Stefan-Boltzmann law E.2.5 Apply the Stefan–Boltzmann law to compare the luminosities of different stars. E.2.4 ...
Slide 1
... The universe includes everything that exists. This includes celestial objects such as stars and planets, plus all the matter and empty space surrounding them. ...
... The universe includes everything that exists. This includes celestial objects such as stars and planets, plus all the matter and empty space surrounding them. ...
Click here to 2016 The Universe Diagnostic Test
... Explain how the real motion of the Sun, the Moon and planets relate to observations Use models to explain the structure of solar system Evaluate the benefits and drawbacks of space exploration Know that gravity controls the motion of all objects in space Know that gravity is not restricted to Earth ...
... Explain how the real motion of the Sun, the Moon and planets relate to observations Use models to explain the structure of solar system Evaluate the benefits and drawbacks of space exploration Know that gravity controls the motion of all objects in space Know that gravity is not restricted to Earth ...
OCN 201 The Scientific Method applied to Origin of the Universe
... The Big Bang Theory Age of the Universe can be estimated from the rate of expansion and the distance to distant galaxies. Universe is 13.7 +/- 0.2 billion years old. Universe was created by a “big bang”: explosive expansion of a “singularity”: an apparent discontinuity in space-time. We have so far ...
... The Big Bang Theory Age of the Universe can be estimated from the rate of expansion and the distance to distant galaxies. Universe is 13.7 +/- 0.2 billion years old. Universe was created by a “big bang”: explosive expansion of a “singularity”: an apparent discontinuity in space-time. We have so far ...
Theory of the Infinite Universe
... the universe today is approximately 2.73 Kelvin or absolute zero (−270.42 °C; −454.76 °F), based on measurements of cosmic microwave background radiation. Our universe extends across infinite time. The l ...
... the universe today is approximately 2.73 Kelvin or absolute zero (−270.42 °C; −454.76 °F), based on measurements of cosmic microwave background radiation. Our universe extends across infinite time. The l ...
light energy
... • Distances can be deceiving: Bright stars look close, but may be very far away Star Approx. Distance (LY) P. Centari ...
... • Distances can be deceiving: Bright stars look close, but may be very far away Star Approx. Distance (LY) P. Centari ...
the universe
... moving away from us, and that the further a galaxy is the faster it is moving away. Since we cannot assume that we have a special place in the universe this is evidence for a generally expanding universe. It suggests that everything is moving away from everything else. The Big Bang Theory says that ...
... moving away from us, and that the further a galaxy is the faster it is moving away. Since we cannot assume that we have a special place in the universe this is evidence for a generally expanding universe. It suggests that everything is moving away from everything else. The Big Bang Theory says that ...
the universe
... moving away from us, and that the further a galaxy is the faster it is moving away. Since we cannot assume that we have a special place in the universe this is evidence for a generally expanding universe. It suggests that everything is moving away from everything else. The Big Bang Theory says that ...
... moving away from us, and that the further a galaxy is the faster it is moving away. Since we cannot assume that we have a special place in the universe this is evidence for a generally expanding universe. It suggests that everything is moving away from everything else. The Big Bang Theory says that ...
distance to the centre of the Milky Way.
... system, now known to be about 100,000 light years in diameter. Note that Shapley actually overestimated the distances somewhat, because he didn’t fully understand the effects of the obscuring dust. But this changed understanding was still absolutely correct in principle! We are in no special place! ...
... system, now known to be about 100,000 light years in diameter. Note that Shapley actually overestimated the distances somewhat, because he didn’t fully understand the effects of the obscuring dust. But this changed understanding was still absolutely correct in principle! We are in no special place! ...
Lecture1
... extinct at 11:52. Pre-human primates appear at around 14 seconds before midnight, and all of recorded history occurs in the last 70 milliseconds. ...
... extinct at 11:52. Pre-human primates appear at around 14 seconds before midnight, and all of recorded history occurs in the last 70 milliseconds. ...
Study Guide Ch10,11 and 12
... to explain their energy output and other characteristics. 11. Briefly relate the story of the discovery of quasars 12. Describe the current explanation of quasars and their energy sources. ...
... to explain their energy output and other characteristics. 11. Briefly relate the story of the discovery of quasars 12. Describe the current explanation of quasars and their energy sources. ...
2. Velocity dispersions of galaxies
... X-ray measurements of hot intracluster gas correspond closely to Zwicky's observations of mass-to-light ratios for large clusters of nearly 10 to 1. Many of the experiments of the Chandra X-ray Observatory use this technique to independently determine the mass of clusters. ...
... X-ray measurements of hot intracluster gas correspond closely to Zwicky's observations of mass-to-light ratios for large clusters of nearly 10 to 1. Many of the experiments of the Chandra X-ray Observatory use this technique to independently determine the mass of clusters. ...
SUMMARY The Earth is one of eight planets orbiting the Sun, and
... The Earth is one of eight planets orbiting the Sun, and the Sun is one of about a hundred billion stars that make up the Milky Way Galaxy. The Milky Way, two other similarsize galaxies, and dozens of smaller galaxies compose the Local Group, which in turn is part of?the Local Supercluster of galaxi ...
... The Earth is one of eight planets orbiting the Sun, and the Sun is one of about a hundred billion stars that make up the Milky Way Galaxy. The Milky Way, two other similarsize galaxies, and dozens of smaller galaxies compose the Local Group, which in turn is part of?the Local Supercluster of galaxi ...
Big bang galaxies stars Name: Date: 1. The diagram below
... universe. In the 1960s, satellite probes found that cosmic microwave background radiation lls the universe uniformly in every direction, and indicated a temperature of about 3 kelvins (K). This radiation has been cooling as the universe has been expanding. ...
... universe. In the 1960s, satellite probes found that cosmic microwave background radiation lls the universe uniformly in every direction, and indicated a temperature of about 3 kelvins (K). This radiation has been cooling as the universe has been expanding. ...
Activity 1 - Galaxies
... The Big Bang Theory To explain Hubble’s extraordinary discoveries about our expanding universe, astronomers came up with the Big Bang Theory. The Big Bang theory states that the whole universe started from a single tiny point that expanded rapidly in an explosion about 13 Billion years ago and is s ...
... The Big Bang Theory To explain Hubble’s extraordinary discoveries about our expanding universe, astronomers came up with the Big Bang Theory. The Big Bang theory states that the whole universe started from a single tiny point that expanded rapidly in an explosion about 13 Billion years ago and is s ...
Red Shift - Animated Science
... The Big Bang Although people often believe that a god created the world, current scientific experts have come up with a theory for creation called the big bang which has scientific proof! This theory involves a great explosion where everything in the known univers ...
... The Big Bang Although people often believe that a god created the world, current scientific experts have come up with a theory for creation called the big bang which has scientific proof! This theory involves a great explosion where everything in the known univers ...
THE BIG BANG THEORY
... • Examples of galaxies range from dwarfs with as few as ten million (107) stars, to giants with one hundred trillion (1014) stars, each orbiting their galaxy's own center of mass • Galaxies are held together by gravity • Supermassive black holes reside at the center of most galaxies. ...
... • Examples of galaxies range from dwarfs with as few as ten million (107) stars, to giants with one hundred trillion (1014) stars, each orbiting their galaxy's own center of mass • Galaxies are held together by gravity • Supermassive black holes reside at the center of most galaxies. ...
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 ...
Astrophysics Presentation
... This is a wonderful opportunity for us to think about the assumptions we (and others) make all the time ...
... This is a wonderful opportunity for us to think about the assumptions we (and others) make all the time ...
Observable universe
![](https://commons.wikimedia.org/wiki/Special:FilePath/Observable_Universe_with_Measurements_01.png?width=300)
The observable universe consists of the galaxies and other matter that can, in principle, be observed from Earth at the present time because light and other signals from these objects has had time to reach the Earth since the beginning of the cosmological expansion. Assuming the universe is isotropic, the distance to the edge of the observable universe is roughly the same in every direction. That is, the observable universe is a spherical volume (a ball) centered on the observer. Every location in the Universe has its own observable universe, which may or may not overlap with the one centered on Earth.The word observable used in this sense does not depend on whether modern technology actually permits detection of radiation from an object in this region (or indeed on whether there is any radiation to detect). It simply indicates that it is possible in principle for light or other signals from the object to reach an observer on Earth. In practice, we can see light only from as far back as the time of photon decoupling in the recombination epoch. That is when particles were first able to emit photons that were not quickly re-absorbed by other particles. Before then, the Universe was filled with a plasma that was opaque to photons.The surface of last scattering is the collection of points in space at the exact distance that photons from the time of photon decoupling just reach us today. These are the photons we detect today as cosmic microwave background radiation (CMBR). However, with future technology, it may be possible to observe the still older relic neutrino background, or even more distant events via gravitational waves (which also should move at the speed of light). Sometimes astrophysicists distinguish between the visible universe, which includes only signals emitted since recombination—and the observable universe, which includes signals since the beginning of the cosmological expansion (the Big Bang in traditional cosmology, the end of the inflationary epoch in modern cosmology). According to calculations, the comoving distance (current proper distance) to particles from the CMBR, which represent the radius of the visible universe, is about 14.0 billion parsecs (about 45.7 billion light years), while the comoving distance to the edge of the observable universe is about 14.3 billion parsecs (about 46.6 billion light years), about 2% larger.The best estimate of the age of the universe as of 2015 is 7010137990000000000♠13.799±0.021 billion years but due to the expansion of space humans are observing objects that were originally much closer but are now considerably farther away (as defined in terms of cosmological proper distance, which is equal to the comoving distance at the present time) than a static 13.8 billion light-years distance. It is estimated that the diameter of the observable universe is about 28 gigaparsecs (91 billion light-years, 8.8×1026 metres or 5.5×1023 miles), putting the edge of the observable universe at about 46–47 billion light-years away.