PowerPoint Presentation - The Origin of the Universe
... • Any material which absorbed the starlight should heat up and re-emit it, we would see this gas glowing ! ...
... • Any material which absorbed the starlight should heat up and re-emit it, we would see this gas glowing ! ...
Cosmology ppt. - University of Dayton
... Summary of Big Bang • Is the universe “open” or “closed” • Open means that it will expand forever • Closed means that sometime it will stop expanding and will begin to contract - the Big Crunch. • Third possibility is a “flat” universe. This universe just stops expanding at some point ...
... Summary of Big Bang • Is the universe “open” or “closed” • Open means that it will expand forever • Closed means that sometime it will stop expanding and will begin to contract - the Big Crunch. • Third possibility is a “flat” universe. This universe just stops expanding at some point ...
The human race has made great strides in the last few centuries
... question even make sense? All we can do is study and explore. We do not know the origin of the Universe. We do not know if it part of some grander yet hyperuniverse. We do not know the nature of time or space, but our current physics gives us some handles on the surface of the problem. We do know th ...
... question even make sense? All we can do is study and explore. We do not know the origin of the Universe. We do not know if it part of some grander yet hyperuniverse. We do not know the nature of time or space, but our current physics gives us some handles on the surface of the problem. We do know th ...
Word
... That most of the Universe should be made of Hydrogen is reasonable since it is the simplest element, consisting of a single proton and electron. As we'll see in the third part of the course, we can also understand the very small contamination from "everything else" as due to the fusion reactions in ...
... That most of the Universe should be made of Hydrogen is reasonable since it is the simplest element, consisting of a single proton and electron. As we'll see in the third part of the course, we can also understand the very small contamination from "everything else" as due to the fusion reactions in ...
0708 - Astronomy
... -it produces an expansion law qualitatively similar to Hubble's Law, in that the velocity of expansion (with respect to the origin) is proportional to distance (from the origin) ...
... -it produces an expansion law qualitatively similar to Hubble's Law, in that the velocity of expansion (with respect to the origin) is proportional to distance (from the origin) ...
Evidence of the Big Bang and Structure of the Universe
... In the diagram below, the spectral lines of hydrogen gas from three galaxies, A, B, and C, are compared to the spectral lines of hydrogen gas observed in a laboratory. A) Galaxy B is moving away from Earth, but galaxies A and C are moving toward Earth. B) Galaxy A is moving away from Earth, but gala ...
... In the diagram below, the spectral lines of hydrogen gas from three galaxies, A, B, and C, are compared to the spectral lines of hydrogen gas observed in a laboratory. A) Galaxy B is moving away from Earth, but galaxies A and C are moving toward Earth. B) Galaxy A is moving away from Earth, but gala ...
II. The Universe Around Us
... Should the CMB be Smooth ? • There are people, planets, stars, galaxies, galaxy clusters and ...
... Should the CMB be Smooth ? • There are people, planets, stars, galaxies, galaxy clusters and ...
7th Grade Astronomy Study Guide
... ____ 36. According to the big bang theory, the universe is about a. 4.7 billion years old. c. 470 billion years old. b. 13.7 billion years old. d. 500 billion years old. ____ 37. Scientists think that the Milky Way probably is a. an irregular galaxy. c. an elliptical galaxy. b. a spiral galaxy. d. a ...
... ____ 36. According to the big bang theory, the universe is about a. 4.7 billion years old. c. 470 billion years old. b. 13.7 billion years old. d. 500 billion years old. ____ 37. Scientists think that the Milky Way probably is a. an irregular galaxy. c. an elliptical galaxy. b. a spiral galaxy. d. a ...
Chapter 1-Thinking about the universe
... travel but his universe rotated and didn’t not expand, ours does. To go back in time, one must go faster than the speed of light, which is supposed to be impossible. But it still is theoretically possible through the use of a wormhole. A wormhole is a straight tunnel in curved space that would short ...
... travel but his universe rotated and didn’t not expand, ours does. To go back in time, one must go faster than the speed of light, which is supposed to be impossible. But it still is theoretically possible through the use of a wormhole. A wormhole is a straight tunnel in curved space that would short ...
History of the Universe and Solar System
... No, gravitational forces have slowed down the galaxies since the Big Bang. (Note: Recent observations suggest this was the case for the first 2/3 of the Universe’s history. The expansion rate now seems to have increased for the last 1/3 of the Universe’s history. This is explained by “dark phantom e ...
... No, gravitational forces have slowed down the galaxies since the Big Bang. (Note: Recent observations suggest this was the case for the first 2/3 of the Universe’s history. The expansion rate now seems to have increased for the last 1/3 of the Universe’s history. This is explained by “dark phantom e ...
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cosmology[1] - KarenConnerEnglishIV
... but like Cepheids, the faster ones are dimmer, so we can figure out how absolute magniitude seeing how fast they vary That enabled two different teams to measure the distance to each supernova. Distance is also an indicator of time since we observe a supernova 5 billion light years away as it appear ...
... but like Cepheids, the faster ones are dimmer, so we can figure out how absolute magniitude seeing how fast they vary That enabled two different teams to measure the distance to each supernova. Distance is also an indicator of time since we observe a supernova 5 billion light years away as it appear ...
Cosmology
... – We can see only a finite distance (~13 billion light years). – For more distant objects the light has not had time to reach us. – Edge of universe (from our perspective) is the cosmic light horizon ...
... – We can see only a finite distance (~13 billion light years). – For more distant objects the light has not had time to reach us. – Edge of universe (from our perspective) is the cosmic light horizon ...
Particle Production In The Early Universe
... As a result, the density of radiation fell faster than the density of matter as the universe grew. Tracing the curves back from the densities we observe today, we see that radiation must have dominated matter at early times—that is, at times before the crossover point. ...
... As a result, the density of radiation fell faster than the density of matter as the universe grew. Tracing the curves back from the densities we observe today, we see that radiation must have dominated matter at early times—that is, at times before the crossover point. ...
The Ever Expanding Universe
... especially if they are far away. Our understanding of the Universe depends upon accurate mapping of every structure in the Universe and was begun by the Greeks, Persians and Indians thousand of years ago! Measuring the distance to the first star was a Herculean task that involved over 2000 years of ...
... especially if they are far away. Our understanding of the Universe depends upon accurate mapping of every structure in the Universe and was begun by the Greeks, Persians and Indians thousand of years ago! Measuring the distance to the first star was a Herculean task that involved over 2000 years of ...
The Early Universe PowerPoint
... • Universe expanded by a factor of ~ 1050 – During this time interval, the cosmological constant was huge ...
... • Universe expanded by a factor of ~ 1050 – During this time interval, the cosmological constant was huge ...
The Solar System and our Universe
... • They can not tell us what is happening now, but what happened in the past. • Light from stars takes years to reach us & we have even detected light from stars formed soon after the Big Bang that has taken 14 billion years to reach us. ...
... • They can not tell us what is happening now, but what happened in the past. • Light from stars takes years to reach us & we have even detected light from stars formed soon after the Big Bang that has taken 14 billion years to reach us. ...
Shape of the universe
The shape of the universe is the local and global geometry of the Universe, in terms of both curvature and topology (though, strictly speaking, the concept goes beyond both). The shape of the universe is related to general relativity which describes how spacetime is curved and bent by mass and energy.There is a distinction between the observable universe and the global universe. The observable universe consists of the part of the universe that can, in principle, be observed due to the finite speed of light and the age of the universe. The observable universe is understood as a sphere around the Earth extending 93 billion light years (8.8 *1026 meters) and would be similar at any observing point (assuming the universe is indeed isotropic, as it appears to be from our vantage point).According to the book Our Mathematical Universe, the shape of the global universe can be explained with three categories: Finite or infinite Flat (no curvature), open (negative curvature) or closed (positive curvature) Connectivity, how the universe is put together, i.e., simply connected space or multiply connected.There are certain logical connections among these properties. For example, a universe with positive curvature is necessarily finite. Although it is usually assumed in the literature that a flat or negatively curved universe is infinite, this need not be the case if the topology is not the trivial one.The exact shape is still a matter of debate in physical cosmology, but experimental data from various, independent sources (WMAP, BOOMERanG and Planck for example) confirm that the observable universe is flat with only a 0.4% margin of error. Theorists have been trying to construct a formal mathematical model of the shape of the universe. In formal terms, this is a 3-manifold model corresponding to the spatial section (in comoving coordinates) of the 4-dimensional space-time of the universe. The model most theorists currently use is the so-called Friedmann–Lemaître–Robertson–Walker (FLRW) model. Arguments have been put forward that the observational data best fit with the conclusion that the shape of the global universe is infinite and flat, but the data are also consistent with other possible shapes, such as the so-called Poincaré dodecahedral space and the Picard horn.