Distant galaxies and quasars The ages of things Light
... cosmological models. Details not important... confirms that halfway back is roughly z=0.5 and observations at z>3 show Universe when it was only 10-20% of its current age. ...
... cosmological models. Details not important... confirms that halfway back is roughly z=0.5 and observations at z>3 show Universe when it was only 10-20% of its current age. ...
final review sheet
... 3) If the distance between the Sun and the Earth increased by a factor of 2, the Sun’s luminosity would decrease by a factor of 4. 4) Pre-main sequence stars release energy by nuclear reactions which turn hydrogen into helium. 5) Astronomers can determine the age of clusters by looking at the distri ...
... 3) If the distance between the Sun and the Earth increased by a factor of 2, the Sun’s luminosity would decrease by a factor of 4. 4) Pre-main sequence stars release energy by nuclear reactions which turn hydrogen into helium. 5) Astronomers can determine the age of clusters by looking at the distri ...
Document
... To find out we need to compare the expansion rate now with the expansion rate in the distant past… ...
... To find out we need to compare the expansion rate now with the expansion rate in the distant past… ...
Unit D Test Review Electromagnetic Spectrum: Which
... What is the connection between wavelength of the radiation its energy? List the colors of visible light in order from shortest wavelength to longest. Complete the table: Type of Radiation ...
... What is the connection between wavelength of the radiation its energy? List the colors of visible light in order from shortest wavelength to longest. Complete the table: Type of Radiation ...
WEDNESDAY JULY 1
... Hubble’s law only applies over very large distances But not too large cuz then dark energy Nearby galaxies under influence of gravity ...
... Hubble’s law only applies over very large distances But not too large cuz then dark energy Nearby galaxies under influence of gravity ...
Universal redshift, the Hubble constant The cosmic background
... the atoms were formed and the medium become transparent decoupled photons allow gravitational collapse and creation of galaxies photons scattered for the last time and continue expanding destiny of some of the photons was to be measured by us One can see it easier – since λM ∼ 1/T , TD/TC = LC /LD C ...
... the atoms were formed and the medium become transparent decoupled photons allow gravitational collapse and creation of galaxies photons scattered for the last time and continue expanding destiny of some of the photons was to be measured by us One can see it easier – since λM ∼ 1/T , TD/TC = LC /LD C ...
Ch. 21 notes-1
... Explain the big bang theory of how the universe was formed. Describe how the solar system was formed. Introduction Andromeda Galaxy is the most distant object you can see with your unaided eye. Light travels for 2 million years before reaching your eye. Moving Galaxies To study how and when the ...
... Explain the big bang theory of how the universe was formed. Describe how the solar system was formed. Introduction Andromeda Galaxy is the most distant object you can see with your unaided eye. Light travels for 2 million years before reaching your eye. Moving Galaxies To study how and when the ...
TCE Syllabus Summary Blank
... identify data sources, and gather, process and analyse information to assess one of the models of the Universe developed from the time of Aristotle to the time of Newton to identify limitations placed on the development of the model by the technology available at the time ...
... identify data sources, and gather, process and analyse information to assess one of the models of the Universe developed from the time of Aristotle to the time of Newton to identify limitations placed on the development of the model by the technology available at the time ...
1.1 Fundamental Observers
... made up of quarks (two up quarks and one down quark for the proton and one up–two down quarks for the neutron).4 Electrons are charged leptons. Since the universe is charge neutral, there must be equal numbers of electrons and protons. Astronomers generally group protons, neutrons and electrons toge ...
... made up of quarks (two up quarks and one down quark for the proton and one up–two down quarks for the neutron).4 Electrons are charged leptons. Since the universe is charge neutral, there must be equal numbers of electrons and protons. Astronomers generally group protons, neutrons and electrons toge ...
Chapter 18 - the Universe Begins
... exist. (Interestingly, slightly more matter than anti-matter was formed, so that most of the matter we detect now is not anti-matter.) By the first second after the Big Bang, the fundamental particles of matter had formed. Protons, neutrons and electrons existed. By three seconds old, the Universe c ...
... exist. (Interestingly, slightly more matter than anti-matter was formed, so that most of the matter we detect now is not anti-matter.) By the first second after the Big Bang, the fundamental particles of matter had formed. Protons, neutrons and electrons existed. By three seconds old, the Universe c ...
Origin of the Universe
... visible light as different colors, people can distinguish specific portions of the electiomagrretic spectrum. When scientists study the spectrum of electromagnetic energy coming from stars and other celestial objects, they can infer which elernents are in these obiects. Scientists base these inferen ...
... visible light as different colors, people can distinguish specific portions of the electiomagrretic spectrum. When scientists study the spectrum of electromagnetic energy coming from stars and other celestial objects, they can infer which elernents are in these obiects. Scientists base these inferen ...
powerpoint
... the hot big bang. However, this radiation comes from great distances (10-20 billion light years) and has been Doppler shifted to very long wavelengths. In fact, it has been Doppler shifted all the way from gamma rays to radio waves; the radio waves discovered by Penzias and Wilson. ...
... the hot big bang. However, this radiation comes from great distances (10-20 billion light years) and has been Doppler shifted to very long wavelengths. In fact, it has been Doppler shifted all the way from gamma rays to radio waves; the radio waves discovered by Penzias and Wilson. ...
Grade 11 Cosmology PPT File
... The Big Bang theory is the result of several important observations. In 1927, Edwin Hubble first observed that light from distant galaxies is red shifted and that galaxies are moving farther and farther away from us. Second, he determined that the farther away a galaxy is from us, the faster it is r ...
... The Big Bang theory is the result of several important observations. In 1927, Edwin Hubble first observed that light from distant galaxies is red shifted and that galaxies are moving farther and farther away from us. Second, he determined that the farther away a galaxy is from us, the faster it is r ...
Ch. 28 Test Topics
... -Know what the central black hole theory is. -Define escape velocity and know what the escape velocity is for a black hole. -Know that the distances between stars are 10,000 times greater than the distances between planets. -Know that the distances between galaxies are a million times greater than t ...
... -Know what the central black hole theory is. -Define escape velocity and know what the escape velocity is for a black hole. -Know that the distances between stars are 10,000 times greater than the distances between planets. -Know that the distances between galaxies are a million times greater than t ...
STATE UNIVERSITY OF NEW YORK COLLEGE OF TECHNOLOGY CANTON, NEW YORK
... a. Appreciate the scale of the universe and basic structure in relationship to the Big Bang theory. b. Give an historical perspective on the development of modern astronomy in conjunction with the development of Newtonian Mechanics and an understanding of gravity, as illustrated by the shift from a ...
... a. Appreciate the scale of the universe and basic structure in relationship to the Big Bang theory. b. Give an historical perspective on the development of modern astronomy in conjunction with the development of Newtonian Mechanics and an understanding of gravity, as illustrated by the shift from a ...
The “Big Bang” Theory
... • These life forms were the simplest form of life – _______ _________. • There is evidence of multi-cellular life as far back as ___________ years. • As organisms with _________ and eventually __________ arrive the fossil record becomes more detailed because these are more easily ___________. ...
... • These life forms were the simplest form of life – _______ _________. • There is evidence of multi-cellular life as far back as ___________ years. • As organisms with _________ and eventually __________ arrive the fossil record becomes more detailed because these are more easily ___________. ...
AST101 Lecture 25 Why is the Night Sky Dark?
... – It may not be in equilibrium – It may not have had stars in the past ...
... – It may not be in equilibrium – It may not have had stars in the past ...
Origins of the Universe
... • It began expanding with unimaginable force from a hot, dense state to its present state over a loooong time (~ 13 750 000 000 years or 14 billion if rounded up) ...
... • It began expanding with unimaginable force from a hot, dense state to its present state over a loooong time (~ 13 750 000 000 years or 14 billion if rounded up) ...
04 Astrophysics_-_lesson_4 cosmology
... standard candle (astronomical object that has a know luminosity) for almost a century. This connection was discovered in 1912 by ...
... standard candle (astronomical object that has a know luminosity) for almost a century. This connection was discovered in 1912 by ...
origins of the Universe
... begin to contract and close in on itself eventually exploding again and starting the process all over again. ...
... begin to contract and close in on itself eventually exploding again and starting the process all over again. ...
physics_cosmic_engine - HSC Guru
... Friedmann proved mathematically that the universe is expanding. However he made some assumptions in order to prove it. Hubble showed that the universe was expanding, by showing that almost all the galaxies are red-shifted, meaning that they are moving away from us. ...
... Friedmann proved mathematically that the universe is expanding. However he made some assumptions in order to prove it. Hubble showed that the universe was expanding, by showing that almost all the galaxies are red-shifted, meaning that they are moving away from us. ...
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. ...
Physical cosmology
Physical cosmology is the study of the largest-scale structures and dynamics of the Universe and is concerned with fundamental questions about its origin, structure, evolution, and ultimate fate. For most of human history, it was a branch of metaphysics and religion. Cosmology as a science originated with the Copernican principle, which implies that celestial bodies obey identical physical laws to those on Earth, and Newtonian mechanics, which first allowed us to understand those physical laws.Physical cosmology, as it is now understood, began with the development in 1915 of Albert Einstein's general theory of relativity, followed by major observational discoveries in the 1920s: first, Edwin Hubble discovered that the universe contains a huge number of external galaxies beyond our own Milky Way; then, work by Vesto Slipher and others showed that the universe is expanding. These advances made it possible to speculate about the origin of the universe, and allowed the establishment of the Big Bang Theory, by Georges Lemaitre, as the leading cosmological model. A few researchers still advocate a handful of alternative cosmologies; however, most cosmologists agree that the Big Bang theory explains the observations better.Dramatic advances in observational cosmology since the 1990s, including the cosmic microwave background, distant supernovae and galaxy redshift surveys, have led to the development of a standard model of cosmology. This model requires the universe to contain large amounts of dark matter and dark energy whose nature is currently not well understood, but the model gives detailed predictions that are in excellent agreement with many diverse observations.Cosmology draws heavily on the work of many disparate areas of research in theoretical and applied physics. Areas relevant to cosmology include particle physics experiments and theory, theoretical and observational astrophysics, general relativity, quantum mechanics, and plasma physics.