1. setting the scene 2. the cosmic dark ages and the first stars
... from gamma rays to radio frequencies, it has become possible to piece together the past history of the Universe and make an educated guess as to its future destiny. This ‘standard model’ of cosmology is illustrated in Figure 1. Our Universe began 13.7 billion years ago, in an event whose popular nam ...
... from gamma rays to radio frequencies, it has become possible to piece together the past history of the Universe and make an educated guess as to its future destiny. This ‘standard model’ of cosmology is illustrated in Figure 1. Our Universe began 13.7 billion years ago, in an event whose popular nam ...
Advancing Physics A2
... For objects that are a very long way away (distant stars and galaxies) the signal would take too long to return and would be too weak to detect. In this case we must make use of the Doppler effect. Atoms in the distant stars emit light at particular wavelengths. If we can identify the elements from ...
... For objects that are a very long way away (distant stars and galaxies) the signal would take too long to return and would be too weak to detect. In this case we must make use of the Doppler effect. Atoms in the distant stars emit light at particular wavelengths. If we can identify the elements from ...
GOLEM
... It gave the wrong prediction for the precession of the perihelion of Mercury's orbit. It did not explain why gravitational acceleration is independent of the mass or composition of an object. Instantaneous force of gravitational attraction between two objects means information about the location of ...
... It gave the wrong prediction for the precession of the perihelion of Mercury's orbit. It did not explain why gravitational acceleration is independent of the mass or composition of an object. Instantaneous force of gravitational attraction between two objects means information about the location of ...
A Beginner`s Guide to Antimatter
... such as the neutron, have antiparticles. These have other properties with a sign (such as magnetic moment) that can be reversed. Interestingly, there is no real difference between particles and antiparticles in particle physics theories. They are equivalent. Most theoreticians believe that at the ti ...
... such as the neutron, have antiparticles. These have other properties with a sign (such as magnetic moment) that can be reversed. Interestingly, there is no real difference between particles and antiparticles in particle physics theories. They are equivalent. Most theoreticians believe that at the ti ...
From Black Holes to Cosmology : The Universe in the
... equipments of the national High Performance Computing (HPC) centres by providing funding and by assuming ownership, promotes the organization of an European HPC area and participates to its achievements, and sets up R&D collaborations in order to optimize HPC. • At a more global scale such as Europe ...
... equipments of the national High Performance Computing (HPC) centres by providing funding and by assuming ownership, promotes the organization of an European HPC area and participates to its achievements, and sets up R&D collaborations in order to optimize HPC. • At a more global scale such as Europe ...
This document was created for people who do not have access to
... billion years to reach the WMAP satellite from its origin in the infant universe, and in that time, the seeds of matter have evolved into the universe of galaxies, stars and planets that we see today. One misconception that this animation can generate is that flying away from Earth will allow us to ...
... billion years to reach the WMAP satellite from its origin in the infant universe, and in that time, the seeds of matter have evolved into the universe of galaxies, stars and planets that we see today. One misconception that this animation can generate is that flying away from Earth will allow us to ...
Expanding Universe and Big Bang
... source moves towards or away from a stationary observer should be investigated. The Doppler Effect causes similar shifts in wavelengths of light. The light from objects moving away from us is shifted to longer wavelengths — redshift. The redshift of a galaxy is the change in wavelength divided by th ...
... source moves towards or away from a stationary observer should be investigated. The Doppler Effect causes similar shifts in wavelengths of light. The light from objects moving away from us is shifted to longer wavelengths — redshift. The redshift of a galaxy is the change in wavelength divided by th ...
The Hidden Lives of Galaxies NSTA 2001
... James Lochner (USRA) & Suzanne Pleau Kinnison (AESP), NASA/GSFC ...
... James Lochner (USRA) & Suzanne Pleau Kinnison (AESP), NASA/GSFC ...
Astro 13 Galaxies & Cosmology LECTURE 1 28 Mar 2001 D. Koo
... • The evolution of the Universe can be essentially derived using the Newtonian equations. This is due to a peculiarity of the Newtonian force: in spherical symmetry the force due to the exterior distribution is zero. Then one can easily compute the evolution of a spherical “piece” of the Universe of ...
... • The evolution of the Universe can be essentially derived using the Newtonian equations. This is due to a peculiarity of the Newtonian force: in spherical symmetry the force due to the exterior distribution is zero. Then one can easily compute the evolution of a spherical “piece” of the Universe of ...
relativistic time correction on movement of distant galaxies
... stars. Suppose there is a Sun like star of about 5 billion years old, then that star was formed at about 13.4+5=18.4 billion years ago. (In fact, present age of this star is to be multiplied by 1+z =1.98. So it is 5x1.98= 9.9 billion light years. But we have just received light from that galaxy and ...
... stars. Suppose there is a Sun like star of about 5 billion years old, then that star was formed at about 13.4+5=18.4 billion years ago. (In fact, present age of this star is to be multiplied by 1+z =1.98. So it is 5x1.98= 9.9 billion light years. But we have just received light from that galaxy and ...
Astronomy Final C - Tarleton State University
... 64. Sagittarius A* is in the A.Galactic Nucleus B.Galactic Disc C.Galactic Halo D.Dark Halo 65. Stars ? massive than our Sun fuse hydrogen by means of the Carbon (CNO) Cycle. A.less B.more 66. The Algol Paradox concerns the A.development of Black Holes B.formation of White Dwarfs C.evolution of bina ...
... 64. Sagittarius A* is in the A.Galactic Nucleus B.Galactic Disc C.Galactic Halo D.Dark Halo 65. Stars ? massive than our Sun fuse hydrogen by means of the Carbon (CNO) Cycle. A.less B.more 66. The Algol Paradox concerns the A.development of Black Holes B.formation of White Dwarfs C.evolution of bina ...
Professor Emeritus, University of Canterbury Yevgeny Lifshitz
... rotationally symmetric and time independent. This eliminates two out of the four coordinates in Einstein’s equations. • The equations where put into many elegant and beautiful forms (particularly by Papapetrou) but no rotating solution was found. ...
... rotationally symmetric and time independent. This eliminates two out of the four coordinates in Einstein’s equations. • The equations where put into many elegant and beautiful forms (particularly by Papapetrou) but no rotating solution was found. ...
Active Galactic Nuclei
... So, the high luminosity is not due to a high infall rate but rather is due to the enormous depth of the gravitational potential well that the material is falling into. One final word on singularities. Black holes have finite mass but zero volume, so the density is infinite, and the laws of physics a ...
... So, the high luminosity is not due to a high infall rate but rather is due to the enormous depth of the gravitational potential well that the material is falling into. One final word on singularities. Black holes have finite mass but zero volume, so the density is infinite, and the laws of physics a ...
Document
... – Gravity should unify with the GUTs force at very high energies. – Much higher than in any possible accelerator. accelerator – However, these energies could occur in the early Universe Universe. ...
... – Gravity should unify with the GUTs force at very high energies. – Much higher than in any possible accelerator. accelerator – However, these energies could occur in the early Universe Universe. ...
Worksheet
... universe is expanding and laid the foundations for the Big Bang theory, which states that the universe exploded into existence from a single point or a very small region in time and space and has been expanding ever since. Just after the Big Bang, temperatures were so high that particle pairs could ...
... universe is expanding and laid the foundations for the Big Bang theory, which states that the universe exploded into existence from a single point or a very small region in time and space and has been expanding ever since. Just after the Big Bang, temperatures were so high that particle pairs could ...
Lecture Eleven (Powerpoint format)
... Intringued, Thorne picked up the wormhole problem over the next several years and began pursuing it as an active research project. Inspired by his bold lead on such a far-out topic, other well-known scientists like Stephen Hawking and Igor Novikov also published work on wormhole theory. ...
... Intringued, Thorne picked up the wormhole problem over the next several years and began pursuing it as an active research project. Inspired by his bold lead on such a far-out topic, other well-known scientists like Stephen Hawking and Igor Novikov also published work on wormhole theory. ...
3 Exam #1
... 20. Use an energy-level diagram to explain in general how atoms absorb and emit light. 21. Explain in simple physical terms how absorption lines occur in spectra. 22. Identify the two most abundant elements in stars. 23. Describe black body radiation and explain how it can be used to find the temper ...
... 20. Use an energy-level diagram to explain in general how atoms absorb and emit light. 21. Explain in simple physical terms how absorption lines occur in spectra. 22. Identify the two most abundant elements in stars. 23. Describe black body radiation and explain how it can be used to find the temper ...
Passport to the Universe Educator`s Guide Text
... your students well beyond the two-dimensional view of the night sky. Your students will take a virtual voyage through the three-dimensional universe and come to understand, in a way never before possible, the astronomical meaning of space and scale. Museum scientists have taken data from the Hubble ...
... your students well beyond the two-dimensional view of the night sky. Your students will take a virtual voyage through the three-dimensional universe and come to understand, in a way never before possible, the astronomical meaning of space and scale. Museum scientists have taken data from the Hubble ...
File - Philosophy, Theology, History, Science, Big
... or too little of the bright stuff would expose potential life-forms to either too much or too little light, heat, and radiation, etc. and the production of life essential elements is also affected by this balance. AN EXQUISITE BALANCE: While stars and planets only account for only about 1 percent of ...
... or too little of the bright stuff would expose potential life-forms to either too much or too little light, heat, and radiation, etc. and the production of life essential elements is also affected by this balance. AN EXQUISITE BALANCE: While stars and planets only account for only about 1 percent of ...
Document
... •Tried to estimate Rayleigh scattering due to ISM gas but determined it to be insignificant (because most obscuration is due to ISM dust absorption which has a smaller dependence) ...
... •Tried to estimate Rayleigh scattering due to ISM gas but determined it to be insignificant (because most obscuration is due to ISM dust absorption which has a smaller dependence) ...
Welcome to Astro 10! - UC Berkeley Astronomy w
... them farther back in the past. • The nearest galaxy, Andromeda, is 2.4 million ly from us. • The nearest Galaxies, stars, and other objects like Quasars can be seen up to 13 billion ly away • The finite speed of light allows us to learn about the history of the Universe just by looking at greater di ...
... them farther back in the past. • The nearest galaxy, Andromeda, is 2.4 million ly from us. • The nearest Galaxies, stars, and other objects like Quasars can be seen up to 13 billion ly away • The finite speed of light allows us to learn about the history of the Universe just by looking at greater di ...
Non-standard cosmology
A non-standard cosmology is any physical cosmological model of the universe that has been, or still is, proposed as an alternative to the Big Bang model of standard physical cosmology. In the history of cosmology, various scientists and researchers have disputed parts or all of the Big Bang due to a rejection or addition of fundamental assumptions needed to develop a theoretical model of the universe. From the 1940s to the 1960s, the astrophysical community was equally divided between supporters of the Big Bang theory and supporters of a rival steady state universe. It was not until advances in observational cosmology in the late 1960s that the Big Bang would eventually become the dominant theory, and today there are few active researchers who dispute it.The term non-standard is applied to any cosmological theory that does not conform to the scientific consensus, but is not used in describing alternative models where no consensus has been reached, and is also used to describe theories that accept a ""big bang"" occurred but differ as to the detailed physics of the origin and evolution of the universe. Because the term depends on the prevailing consensus, the meaning of the term changes over time. For example, hot dark matter would not have been considered non-standard in 1990, but would be in 2010. Conversely, a non-zero cosmological constant resulting in an accelerating universe would have been considered non-standard in 1990, but is part of the standard cosmology in 2010.