
A6 - Vicphysics
... of his life, work and times. Follow the links in the Science section to obtain details about his telescopic observations, including his drawings. A handy exercise is to loan students a small cheap refracting telescope (the sort that can be purchased for under $20 from stores such as Australian Geogr ...
... of his life, work and times. Follow the links in the Science section to obtain details about his telescopic observations, including his drawings. A handy exercise is to loan students a small cheap refracting telescope (the sort that can be purchased for under $20 from stores such as Australian Geogr ...
Dark Matter, Dark Energy, and the Fate of the Universe
... huge swarms of galaxies bound together by gravity. It seemed natural to him that galaxies clumped closely together in space should all be orbiting one another, just like the stars in a star cluster. He therefore assumed that he could measure cluster masses by observing galaxy motions and applying Ne ...
... huge swarms of galaxies bound together by gravity. It seemed natural to him that galaxies clumped closely together in space should all be orbiting one another, just like the stars in a star cluster. He therefore assumed that he could measure cluster masses by observing galaxy motions and applying Ne ...
White dwarfs, black holes, dark matter
... the inital Universe was hot and dense therefore: nuclear fusion; all elements made in first 3 minutes Alpher, Bethe, Gamow 1948 as the Universe expands it becomes transparent radiation and matter cool independently radiation now 5 á 50 K (in fact: 3 K) ...
... the inital Universe was hot and dense therefore: nuclear fusion; all elements made in first 3 minutes Alpher, Bethe, Gamow 1948 as the Universe expands it becomes transparent radiation and matter cool independently radiation now 5 á 50 K (in fact: 3 K) ...
THE TRUTH ABOUT Science And Religion
... the world around us, a world that contains both material and spiritual components. Finally, in an Epilogue (chapter 9), he provides a personal point of view. He writes both as a practicing research scientist in Chemistry and as a Christian believer who is widely read in the literature that addresses ...
... the world around us, a world that contains both material and spiritual components. Finally, in an Epilogue (chapter 9), he provides a personal point of view. He writes both as a practicing research scientist in Chemistry and as a Christian believer who is widely read in the literature that addresses ...
An analogy
... – distances are required to understand both the sizes and ages of the galaxies – distances require redshifts AND cosmological parameters – distant galaxies are younger than those used to define the Hubble Sequence – more peculiar galaxies are observed: could be due to patchy star formation (younger ...
... – distances are required to understand both the sizes and ages of the galaxies – distances require redshifts AND cosmological parameters – distant galaxies are younger than those used to define the Hubble Sequence – more peculiar galaxies are observed: could be due to patchy star formation (younger ...
Galaxies
... Distant Red Ellipticals • Observations of some distant red elliptical galaxies support the idea that most of their stars formed very early in the history of the universe ...
... Distant Red Ellipticals • Observations of some distant red elliptical galaxies support the idea that most of their stars formed very early in the history of the universe ...
Quasars: Back to the Infant Universe
... tell us they are composed of hot gas orbiting something? Quasars appear extremely bright. Is this because they’re close to us or because they’re intrinsically luminous? What observations of quasars tell us they are small? What are Seyferts and Radio Galaxies? What is at the center of a galaxy that p ...
... tell us they are composed of hot gas orbiting something? Quasars appear extremely bright. Is this because they’re close to us or because they’re intrinsically luminous? What observations of quasars tell us they are small? What are Seyferts and Radio Galaxies? What is at the center of a galaxy that p ...
PH607lec12
... of the Universe. On average, the smaller galaxies have one-tenth the mass of the larger ones, and are only about half their age. The term 'downsizing' essentially means that when the Universe was relatively young, the star formation activity occurred in large galaxies, but as the Universe aged, the ...
... of the Universe. On average, the smaller galaxies have one-tenth the mass of the larger ones, and are only about half their age. The term 'downsizing' essentially means that when the Universe was relatively young, the star formation activity occurred in large galaxies, but as the Universe aged, the ...
CH01.AST1001.F16.EDS
... • How did we come to be? – The matter in our bodies came from the Big Bang, which produced hydrogen and helium. – All other elements were constructed from H and He in stars and then recycled into new star systems, including our solar system. • How do our lifetimes compare to the age of the universe? ...
... • How did we come to be? – The matter in our bodies came from the Big Bang, which produced hydrogen and helium. – All other elements were constructed from H and He in stars and then recycled into new star systems, including our solar system. • How do our lifetimes compare to the age of the universe? ...
CH01.AST1001.S15.EDS
... • How did we come to be? – The matter in our bodies came from the Big Bang, which produced hydrogen and helium. – All other elements were constructed from H and He in stars and then recycled into new star systems, including our solar system. • How do our lifetimes compare to the age of the universe? ...
... • How did we come to be? – The matter in our bodies came from the Big Bang, which produced hydrogen and helium. – All other elements were constructed from H and He in stars and then recycled into new star systems, including our solar system. • How do our lifetimes compare to the age of the universe? ...
CHAPTER 30: STARS, GALAXIES AND THE UNIVERSE Analyzing
... Nuclear fusion = combination of light atomic nuclei to form heavier atomic nuclei Astronomers learn about stars primarily by analyzing light that stars emit. Starlight passing through a spectrograph produces a display of colors and lines called a spectrum. Analyzing Starlight, continued All stars ha ...
... Nuclear fusion = combination of light atomic nuclei to form heavier atomic nuclei Astronomers learn about stars primarily by analyzing light that stars emit. Starlight passing through a spectrograph produces a display of colors and lines called a spectrum. Analyzing Starlight, continued All stars ha ...
Spiral Galaxies - Astronomy Centre
... In the mid 1910s Harlow Shapley determined that the Galaxy is over 300,000 light years in size Due to this large size, Shapley believed our Galaxy to contain the observed nebulae In 1920 the Great Debate took place between Shapley and Heber Curtis, who argued for the island universe hypothesis ...
... In the mid 1910s Harlow Shapley determined that the Galaxy is over 300,000 light years in size Due to this large size, Shapley believed our Galaxy to contain the observed nebulae In 1920 the Great Debate took place between Shapley and Heber Curtis, who argued for the island universe hypothesis ...
The ANTARES telescope turns its gaze to the sky
... (E > 10 MeV). Each time a new wavelength has been used, unexpected phenomena were observed. Our view of the Universe today reveals objects such as supernova remnants, pulsars, micro-quasars in the Galaxy, extragalactic y ray bursts and active galactic nuclei, all emitters of very high energy photons ...
... (E > 10 MeV). Each time a new wavelength has been used, unexpected phenomena were observed. Our view of the Universe today reveals objects such as supernova remnants, pulsars, micro-quasars in the Galaxy, extragalactic y ray bursts and active galactic nuclei, all emitters of very high energy photons ...
Chapter-by-Chapter Guide
... between galaxies is increasing with time. If the universe is expanding, then if we imagine playing time backward, we’d see the universe shrinking. Eventually, if we went far enough back in time, the universe would be compressed until everything were on top of everything else. This suggests that the ...
... between galaxies is increasing with time. If the universe is expanding, then if we imagine playing time backward, we’d see the universe shrinking. Eventually, if we went far enough back in time, the universe would be compressed until everything were on top of everything else. This suggests that the ...
The Evolution of Galaxy - Tufts Institute of Cosmology
... been drawn in but have not yet been fully assimilated. Virgo seems to be in an even earlier stage of formation. It is still pulling in surrounding material and, at the current rate of progress, will look like Coma after a few billion years. This dynamic view of clusters gobbling up ...
... been drawn in but have not yet been fully assimilated. Virgo seems to be in an even earlier stage of formation. It is still pulling in surrounding material and, at the current rate of progress, will look like Coma after a few billion years. This dynamic view of clusters gobbling up ...
The Bible, Science and Creation
... than that of a proton, and it decays to a proton, electron, and an antineutrino with a half life of 12 minutes. Free neutrons cannot persist in nature. If the mass of a proton were increased by just 0.2 %, it would decay into a neutron, a positron and a neutrino. This decay does not occur - if it di ...
... than that of a proton, and it decays to a proton, electron, and an antineutrino with a half life of 12 minutes. Free neutrons cannot persist in nature. If the mass of a proton were increased by just 0.2 %, it would decay into a neutron, a positron and a neutrino. This decay does not occur - if it di ...
The Bible, Science and Creation
... than that of a proton, and it decays to a proton, electron, and an antineutrino with a half life of 12 minutes. Free neutrons cannot persist in nature. If the mass of a proton were increased by just 0.2 %, it would decay into a neutron, a positron and a neutrino. This decay does not occur - if it di ...
... than that of a proton, and it decays to a proton, electron, and an antineutrino with a half life of 12 minutes. Free neutrons cannot persist in nature. If the mass of a proton were increased by just 0.2 %, it would decay into a neutron, a positron and a neutrino. This decay does not occur - if it di ...
stars & galaxies
... our home iN The sTars… • The Milky Way has a diameter of about 100,000 light years. • The nucleus is 2000 light years thick. • Our sun is located 30,000 light years from the nucleus. • It takes the sun 200 million years to ...
... our home iN The sTars… • The Milky Way has a diameter of about 100,000 light years. • The nucleus is 2000 light years thick. • Our sun is located 30,000 light years from the nucleus. • It takes the sun 200 million years to ...
16 Hubble s Law and Dark Matter
... The end of the quasar epoch seems to have been about 10 billion years ago; all the quasars we have seen are older than that. Why might that be? The black holes powering the quasars do not go away; it is believed that many, if not most, galaxies have a supermassive black hole at their centers. ...
... The end of the quasar epoch seems to have been about 10 billion years ago; all the quasars we have seen are older than that. Why might that be? The black holes powering the quasars do not go away; it is believed that many, if not most, galaxies have a supermassive black hole at their centers. ...
Ch 3 PPT - Blountstown Middle School
... • What happens to a star when it leaves the main sequence depends on its mass. • Matter is recycled in the planetary nebulae of white dwarfs and the remnants of supernovae. ...
... • What happens to a star when it leaves the main sequence depends on its mass. • Matter is recycled in the planetary nebulae of white dwarfs and the remnants of supernovae. ...
Document
... The 21st century will surely provide those means. Already, the laser, the computer, and atomic energy have found their ways int o our lives and are already being used for the tasks of today. These same tools will be applied to new tasks of the 21 st century, tasks we cannot even conceive of today. I ...
... The 21st century will surely provide those means. Already, the laser, the computer, and atomic energy have found their ways int o our lives and are already being used for the tasks of today. These same tools will be applied to new tasks of the 21 st century, tasks we cannot even conceive of today. I ...
pompton lakes high school - Pompton Lakes School District
... properties. Explain why Venus is hard to observe from Earth and how we have obtained more detailed knowledge of the planet. Compare the surface features and geology of Venus with those of the Earth and the Moon. Describe the characteristics of Venus’ atmosphere and contrast it with that of Ear ...
... properties. Explain why Venus is hard to observe from Earth and how we have obtained more detailed knowledge of the planet. Compare the surface features and geology of Venus with those of the Earth and the Moon. Describe the characteristics of Venus’ atmosphere and contrast it with that of Ear ...
pompton lakes high school - Pompton Lakes School District
... properties. Explain why Venus is hard to observe from Earth and how we have obtained more detailed knowledge of the planet. Compare the surface features and geology of Venus with those of the Earth and the Moon. Describe the characteristics of Venus’ atmosphere and contrast it with that of Ear ...
... properties. Explain why Venus is hard to observe from Earth and how we have obtained more detailed knowledge of the planet. Compare the surface features and geology of Venus with those of the Earth and the Moon. Describe the characteristics of Venus’ atmosphere and contrast it with that of Ear ...
A Aberration The apparent change in position of a light
... An effect that demonstrates that photons (the quantum of electromagnetic radiation) have momentum. A photon fired at a stationary particle, such as an electron, will impart momentum to the electron and, since its energy has been decreased, will experience a corresponding decrease in frequency. Conse ...
... An effect that demonstrates that photons (the quantum of electromagnetic radiation) have momentum. A photon fired at a stationary particle, such as an electron, will impart momentum to the electron and, since its energy has been decreased, will experience a corresponding decrease in frequency. Conse ...
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.