CosmologyL1
... emitted shortly after the Big Bang, and has been traveling through space for 13.7 billion years to us. In this "baby picture" of the universe, the red and yellow patches are regions that are just a few millionths of a degree hotter than the blue and black areas. This tiny difference helped seed the ...
... emitted shortly after the Big Bang, and has been traveling through space for 13.7 billion years to us. In this "baby picture" of the universe, the red and yellow patches are regions that are just a few millionths of a degree hotter than the blue and black areas. This tiny difference helped seed the ...
30galaxies and the universe
... 18. When the rate of expansion of the universe is known, it is possible to calculate the ...
... 18. When the rate of expansion of the universe is known, it is possible to calculate the ...
Course Expectations
... 9. The difference between active and inactive galaxies 10. Hubble’s Law is used to calculate the distance to other galaxies 11. The farther away the galaxy is the faster it is moving 12. The Big Bang Theory is currently the most widely accepted and supported explanation for the formation of our univ ...
... 9. The difference between active and inactive galaxies 10. Hubble’s Law is used to calculate the distance to other galaxies 11. The farther away the galaxy is the faster it is moving 12. The Big Bang Theory is currently the most widely accepted and supported explanation for the formation of our univ ...
Session 3 – The Big Bang Pt.2
... The problem is the Big Bang would create a completely equal and smooth universe and distribution of mass/energy Dr. Danny Faulkner : "The cosmology popular today supposes that early in the universe large clouds of gas began to form. These clouds were millions of light years across and slowly conden ...
... The problem is the Big Bang would create a completely equal and smooth universe and distribution of mass/energy Dr. Danny Faulkner : "The cosmology popular today supposes that early in the universe large clouds of gas began to form. These clouds were millions of light years across and slowly conden ...
Astrophysics * Glossary - Uplift Summit International
... In 1960 it was proposed that sometime during the early history of the Universe it was at a sufficiently high temperature to produce helium by fusion. In this process many high energy photons would be produced. The CMB (Cosmic Microwave Background Radiation) radiation was emitted only a few hundred t ...
... In 1960 it was proposed that sometime during the early history of the Universe it was at a sufficiently high temperature to produce helium by fusion. In this process many high energy photons would be produced. The CMB (Cosmic Microwave Background Radiation) radiation was emitted only a few hundred t ...
PPT - Wayne State University Physics and Astronomy
... This dark matter is believed to surround most galaxies, and the massto-light ratio for certain galaxies can exceed 300 times that of the sun. ...
... This dark matter is believed to surround most galaxies, and the massto-light ratio for certain galaxies can exceed 300 times that of the sun. ...
Using Galaxy Clusters to Study Structure Evolution
... Only linear homogeneous expansion is universally internally consistent ...
... Only linear homogeneous expansion is universally internally consistent ...
Astronomy perspective
... things, only disprove them! At best, you can substantiate a hypothesis by ruling out, statistically, a whole long list of competing hypotheses, every one that has ever been proposed. After a while your adversaries and competitors will give up trying to think of alternative hypotheses, or else they w ...
... things, only disprove them! At best, you can substantiate a hypothesis by ruling out, statistically, a whole long list of competing hypotheses, every one that has ever been proposed. After a while your adversaries and competitors will give up trying to think of alternative hypotheses, or else they w ...
natsci9+
... isotropy of the distribution of radio sources in the sky isotropy of the cosmic microwave radiation (discovery in 1965) ...
... isotropy of the distribution of radio sources in the sky isotropy of the cosmic microwave radiation (discovery in 1965) ...
new theory of non-expanding universe
... Horizon. Since the galaxies beyond it cannot be observed as the signals from them to reach us have to move faster than light which is prohibited by Relativity Theories. 4.3 The Steady State Universe According to Hubble's law, every receding galaxy moves increasingly faster as it goes farther away. W ...
... Horizon. Since the galaxies beyond it cannot be observed as the signals from them to reach us have to move faster than light which is prohibited by Relativity Theories. 4.3 The Steady State Universe According to Hubble's law, every receding galaxy moves increasingly faster as it goes farther away. W ...
Scale
... • You should end up in the Astro 10 Announcement screen • You will have to use the username & password you chose above to log in; this will be your username for the course ...
... • You should end up in the Astro 10 Announcement screen • You will have to use the username & password you chose above to log in; this will be your username for the course ...
Cosmo: Student`s Workbook
... In 1837 parallax of a star was detected for the first time. The apparent movement of the star against the distant background was so slight that it needed the best telescope technology the 19th Century could provide before it was detectable. Today parallax will detect a star out to a distance of 2-30 ...
... In 1837 parallax of a star was detected for the first time. The apparent movement of the star against the distant background was so slight that it needed the best telescope technology the 19th Century could provide before it was detectable. Today parallax will detect a star out to a distance of 2-30 ...
III. Contents of The Universe
... clouds of gas and dust in space some are illuminated by nearby stars (bright nebulae) others remain dark and are only seen if they obscure a brighter object (dark nebulae) ...
... clouds of gas and dust in space some are illuminated by nearby stars (bright nebulae) others remain dark and are only seen if they obscure a brighter object (dark nebulae) ...
or view
... In 1948, Russian-born physicist George Gamow came up with the idea that if all galaxies are travelling away from each other at high speed, there must have been a point way back in the past when the entire Universe was concentrated in a single point. The term "the Big Bang" was originally coined in o ...
... In 1948, Russian-born physicist George Gamow came up with the idea that if all galaxies are travelling away from each other at high speed, there must have been a point way back in the past when the entire Universe was concentrated in a single point. The term "the Big Bang" was originally coined in o ...
Ivelina Sotirova Major: Biochemistry Senior at CUNY Hunter College
... The discovery of this year’s Physics Nobel Prize Laureates challenged many concepts in the field of astronomy as it revealed a secret our Universe had been keeping for billions of years. The Supernova Cosmology Project (SCP) led by Saul Perlmutter, and the High-z Supernova Search Team (HZT) led by B ...
... The discovery of this year’s Physics Nobel Prize Laureates challenged many concepts in the field of astronomy as it revealed a secret our Universe had been keeping for billions of years. The Supernova Cosmology Project (SCP) led by Saul Perlmutter, and the High-z Supernova Search Team (HZT) led by B ...
Lecture 24, PPT version
... • Cosmological redshift is technically not a Doppler shift (photons lose energy as they travel to us) • Energy density in light drops faster than energy density in mass due to redshift of the photons • Big Bang predictions • Olbers’ paradox (darkness at night) ...
... • Cosmological redshift is technically not a Doppler shift (photons lose energy as they travel to us) • Energy density in light drops faster than energy density in mass due to redshift of the photons • Big Bang predictions • Olbers’ paradox (darkness at night) ...
creation of a cosmology: big bang theory _eng
... model in that it predicted the redshift, even though de Sitter felt it was an illusion, and did not at the time link it to any recession of celestial objects. The academic community of 1930 did not fully embrace either model of the universe. Then the Secretary of the Royal Astronomical Society in En ...
... model in that it predicted the redshift, even though de Sitter felt it was an illusion, and did not at the time link it to any recession of celestial objects. The academic community of 1930 did not fully embrace either model of the universe. Then the Secretary of the Royal Astronomical Society in En ...
The Observable Universe: Redshift, Distances and the Hubble-Law
... even accelerating. Hubble Expansion: Space is stretched This implies some beginning … • 2. Relic Radiation: CMBR, WMAP, … • 3. Matter distribution is clumpy • 4. Matter is dominated by Dark Matter (DM). Only a Relativistic Cosmos can explain all these facts. ...
... even accelerating. Hubble Expansion: Space is stretched This implies some beginning … • 2. Relic Radiation: CMBR, WMAP, … • 3. Matter distribution is clumpy • 4. Matter is dominated by Dark Matter (DM). Only a Relativistic Cosmos can explain all these facts. ...
Here - gcisd
... Scientists can now measure the intensity of a galaxy’s redshift and use this value to calculate the galaxy’s distance from Earth and the speed at which it is moving. Scientists still have not developed a way to measure the current size of the universe. The Age of the Universe Visible light is a form ...
... Scientists can now measure the intensity of a galaxy’s redshift and use this value to calculate the galaxy’s distance from Earth and the speed at which it is moving. Scientists still have not developed a way to measure the current size of the universe. The Age of the Universe Visible light is a form ...
Dark Matter and Dark Energy
... • Stable, TeV-scale particle, electrically neutral, only weakly interacting • No such candidate in the Standard Model • Supersymmetry: (LSP) Lightest Supersymmetric Particle is a superpartner of a gauge boson in most models: “bino” a perfect candidate for WIMP • But there are many other possibilitie ...
... • Stable, TeV-scale particle, electrically neutral, only weakly interacting • No such candidate in the Standard Model • Supersymmetry: (LSP) Lightest Supersymmetric Particle is a superpartner of a gauge boson in most models: “bino” a perfect candidate for WIMP • But there are many other possibilitie ...
Day_2
... • Ideas are tested against nature. • Tests come from observation or calculation. • The tests falsify some ideas and support others. • All scientific knowledge is provisional. • Science involves Exploration & Discovery ...
... • Ideas are tested against nature. • Tests come from observation or calculation. • The tests falsify some ideas and support others. • All scientific knowledge is provisional. • Science involves Exploration & Discovery ...
Big Bang
The Big Bang theory is the prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution. The model accounts for the fact that the universe expanded from a very high density and high temperature state, and offers a comprehensive explanation for a broad range of observed phenomena, including the abundance of light elements, the cosmic microwave background, large scale structure, and Hubble's Law. If the known laws of physics are extrapolated beyond where they are valid, there is a singularity. Modern measurements place this moment at approximately 13.8 billion years ago, which is thus considered the age of the universe. After the initial expansion, the universe cooled sufficiently to allow the formation of subatomic particles, and later simple atoms. Giant clouds of these primordial elements later coalesced through gravity to form stars and galaxies.Since Georges Lemaître first noted, in 1927, that an expanding universe might be traced back in time to an originating single point, scientists have built on his idea of cosmic expansion. While the scientific community was once divided between supporters of two different expanding universe theories, the Big Bang and the Steady State theory, accumulated empirical evidence provides strong support for the former. In 1929, from analysis of galactic redshifts, Edwin Hubble concluded that galaxies are drifting apart, important observational evidence consistent with the hypothesis of an expanding universe. In 1965, the cosmic microwave background radiation was discovered, which was crucial evidence in favor of the Big Bang model, since that theory predicted the existence of background radiation throughout the universe before it was discovered. More recently, measurements of the redshifts of supernovae indicate that the expansion of the universe is accelerating, an observation attributed to dark energy's existence. The known physical laws of nature can be used to calculate the characteristics of the universe in detail back in time to an initial state of extreme density and temperature.