Document
... This diagram shows a single closed dimension of cosmological space (a huge cosmic great circle) and many local ‘directions’ or dimensions of time. We may think of time in spacetime in much the same way that we think of the gravitational gradient on Earth; time is not a single dimension of spacetime, ...
... This diagram shows a single closed dimension of cosmological space (a huge cosmic great circle) and many local ‘directions’ or dimensions of time. We may think of time in spacetime in much the same way that we think of the gravitational gradient on Earth; time is not a single dimension of spacetime, ...
universe
... distance . That means , galaxies that are twice as far from us move twice as fast . This also implies that the Universe is expanding in all directions and that every galaxy took the same amount of time to reach its current position from a common starting point . After the Big Bang , the temperature ...
... distance . That means , galaxies that are twice as far from us move twice as fast . This also implies that the Universe is expanding in all directions and that every galaxy took the same amount of time to reach its current position from a common starting point . After the Big Bang , the temperature ...
slides
... Local group of clusters → Milky way→ Solar System → Earth Our ancestors thought Earth was at the center and rest of the universe revolved around it. Now we know we are so insignificant compared to the Universe! ...
... Local group of clusters → Milky way→ Solar System → Earth Our ancestors thought Earth was at the center and rest of the universe revolved around it. Now we know we are so insignificant compared to the Universe! ...
APS Slide Presentation
... holes, and inflation have only begun to impact physics in general and cosmology in particular. Dark energy generally has not been factored into all universe formation models, but when considered, it changes everything. The function of dark energy is to push the universe apart, separating each super ...
... holes, and inflation have only begun to impact physics in general and cosmology in particular. Dark energy generally has not been factored into all universe formation models, but when considered, it changes everything. The function of dark energy is to push the universe apart, separating each super ...
10-18-2015
... • Multiverse: Region(s) in space beyond the traditional (observable) universe. • Concept includes anything from an infinitely large universe, to multiple or infinite unrelated universes and dimensions. • Max Tagmark proposes four levels of multiverse, with each succeeding level being inclusive of pr ...
... • Multiverse: Region(s) in space beyond the traditional (observable) universe. • Concept includes anything from an infinitely large universe, to multiple or infinite unrelated universes and dimensions. • Max Tagmark proposes four levels of multiverse, with each succeeding level being inclusive of pr ...
Distance - Fixed Earth
... certainly, no Biblical God offering a plan for eternal life to mankind. The Copernican Revolution not only declared the Bible wrong (and also the Koran3), and not only made the Earth and Mankind insignificant accidents in a universe full of star/suns with fantasized planets and evolving life forms, ...
... certainly, no Biblical God offering a plan for eternal life to mankind. The Copernican Revolution not only declared the Bible wrong (and also the Koran3), and not only made the Earth and Mankind insignificant accidents in a universe full of star/suns with fantasized planets and evolving life forms, ...
Cosmic distance scale
... More stars => more mass => higher rotation + brighter The stars and gas in the galaxy are in orbit, so: ...
... More stars => more mass => higher rotation + brighter The stars and gas in the galaxy are in orbit, so: ...
Dark Matter: Inquiring Minds Want to Know ()
... What is Matter? • Lots of ways to understand the word “matter” • Examples: – Rocks – You – The Earth – The Sun – Atoms • Our Sun and Earth are attracted to each other by gravity • They are attracted to each other because they are made of “matter” – They have “mass” ...
... What is Matter? • Lots of ways to understand the word “matter” • Examples: – Rocks – You – The Earth – The Sun – Atoms • Our Sun and Earth are attracted to each other by gravity • They are attracted to each other because they are made of “matter” – They have “mass” ...
The Dark Side Revealed: A Complete Relativity Theory Predicts the
... that dark matter is not baryonic, and that it is comprised of particles that are not part of the “standard model” of particle physics. Candidates that were considered include very light axions and Weakly Interacting Massive Particles (WIMPs) which are believed to constitute a major fraction of the U ...
... that dark matter is not baryonic, and that it is comprised of particles that are not part of the “standard model” of particle physics. Candidates that were considered include very light axions and Weakly Interacting Massive Particles (WIMPs) which are believed to constitute a major fraction of the U ...
The Hubble Mission - Indiana University Astronomy
... members of the first class of galaxies formed when the universe was only a few percent of its present age. These faint galaxies are dwarf galaxies from which larger ...
... members of the first class of galaxies formed when the universe was only a few percent of its present age. These faint galaxies are dwarf galaxies from which larger ...
What if Time Really Exists?
... embodies a stark form of presentism: it simply tells us which states the universe can find itself in, and says nothing about any evolution through time. However, these perspectives should not convince us to give up on the reality of time. For one thing, they may not be right; there are deep issues h ...
... embodies a stark form of presentism: it simply tells us which states the universe can find itself in, and says nothing about any evolution through time. However, these perspectives should not convince us to give up on the reality of time. For one thing, they may not be right; there are deep issues h ...
ies la arboleda – centro tic - plurilingüe
... (A)- The universe was contained in a single point in space. All of the matter and energy of space was then contained at this point. What existed prior to this event is completely unknown. About 13.73 billion years (13.730.000.000 years) ago a tremendous explosion started the expansion of the univers ...
... (A)- The universe was contained in a single point in space. All of the matter and energy of space was then contained at this point. What existed prior to this event is completely unknown. About 13.73 billion years (13.730.000.000 years) ago a tremendous explosion started the expansion of the univers ...
Dark Matter
... the Earth) orbiting around a star: the Sun. We also know that stars collect themselves into galaxies, on a scale much larger than the solar system (about 100 million times larger!). Our Sun is an average star in an average galaxy called the Milky Way. The Milky Way contains about 100 billion stars. ...
... the Earth) orbiting around a star: the Sun. We also know that stars collect themselves into galaxies, on a scale much larger than the solar system (about 100 million times larger!). Our Sun is an average star in an average galaxy called the Milky Way. The Milky Way contains about 100 billion stars. ...
Chapter 34 - mrphysicsportal.net
... the distance in light years. For example, the Andromeda galaxy is 2 million light years away, so that the light now reaching us left it 2 million years ago. If we could be there now, Andromeda would be different. Similarly, light from the most distant galaxy left it 14 billion years ago. We have an ...
... the distance in light years. For example, the Andromeda galaxy is 2 million light years away, so that the light now reaching us left it 2 million years ago. If we could be there now, Andromeda would be different. Similarly, light from the most distant galaxy left it 14 billion years ago. We have an ...
Universe, Dark Energy and Dark Matter
... around as and this uniformity applies not only to their distribution but also to the law of increase of their velocities as they move away from us. How can it be explained? It may be suggested that man takes the central position in the Universe and all the galaxies are running away from us. Other sc ...
... around as and this uniformity applies not only to their distribution but also to the law of increase of their velocities as they move away from us. How can it be explained? It may be suggested that man takes the central position in the Universe and all the galaxies are running away from us. Other sc ...
Frontiers of Physics - Wright State University
... the distance in light years. For example, the Andromeda galaxy is 2 million light years away, so that the light now reaching us left it 2 million years ago. If we could be there now, Andromeda would be different. Similarly, light from the most distant galaxy left it 14 billion years ago. We have an ...
... the distance in light years. For example, the Andromeda galaxy is 2 million light years away, so that the light now reaching us left it 2 million years ago. If we could be there now, Andromeda would be different. Similarly, light from the most distant galaxy left it 14 billion years ago. We have an ...
2020 Vision: An Overview of New Worlds, New Horizons in
... that powers stellar luminosity and, in the case of our own Sun, supports life on Earth. Astronomers have also learned that new planets can form in the dusty, rotating disks that surround protostars and very young stars. Such circumstellar disks have been detected around more than 80 percent of stars ...
... that powers stellar luminosity and, in the case of our own Sun, supports life on Earth. Astronomers have also learned that new planets can form in the dusty, rotating disks that surround protostars and very young stars. Such circumstellar disks have been detected around more than 80 percent of stars ...
The Interstellar Medium
... First idea was to have a debate on relativity: As to relativity, I must confess that I would rather have a subject in which there would be a half dozen members of the Academy competent enough to understand at least a few words of what the speakers were saying if we had a symposium upon it. I pray to ...
... First idea was to have a debate on relativity: As to relativity, I must confess that I would rather have a subject in which there would be a half dozen members of the Academy competent enough to understand at least a few words of what the speakers were saying if we had a symposium upon it. I pray to ...
black–hole
... methods». It is remarkable the way Planck considered these quantities: «In the new system of measurement each of the four preceding constants of Nature (G, h, c, K) has the value one». This is the meaning of measuring Lengths, Times, Masses and Temperatures in Planck’s units. When Planck was express ...
... methods». It is remarkable the way Planck considered these quantities: «In the new system of measurement each of the four preceding constants of Nature (G, h, c, K) has the value one». This is the meaning of measuring Lengths, Times, Masses and Temperatures in Planck’s units. When Planck was express ...
EarthComm_c1s3
... temperature of the universe had cooled enough to allow atoms to form. Leftover energy from this moment can be observed today. This radiation comes from all directions in the universe. The steady-state theory has also been challenged by the discovery that galaxies were more crowded together in the pa ...
... temperature of the universe had cooled enough to allow atoms to form. Leftover energy from this moment can be observed today. This radiation comes from all directions in the universe. The steady-state theory has also been challenged by the discovery that galaxies were more crowded together in the pa ...
ppt
... • How are heavy elements distributed through galaxies? • What are the progenitors of Type Ia SNe? • What is the effect of a low-metallicity environment on star formation and gas tracers? ...
... • How are heavy elements distributed through galaxies? • What are the progenitors of Type Ia SNe? • What is the effect of a low-metallicity environment on star formation and gas tracers? ...
PHY306 Introduction to Cosmology Practice Problems
... and H0 = 74 km s−1 Mpc−1 , calculate the redshift at which Ωm (z) = Ωr (z), given that the present temperature of the cosmic microwave background is 2.7 K. The answer you get is in fact wrong: WMAP finds that the redshift of matter-radiation equality is zeq = 3200. What did we neglect in our calcula ...
... and H0 = 74 km s−1 Mpc−1 , calculate the redshift at which Ωm (z) = Ωr (z), given that the present temperature of the cosmic microwave background is 2.7 K. The answer you get is in fact wrong: WMAP finds that the redshift of matter-radiation equality is zeq = 3200. What did we neglect in our calcula ...
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.