Key Areas covered
... enough to light our sky at night. The only explanation that it is not is that the stars are moving away from us. An expanding universe must have started out infinitely small and agrees with the Big Bang Theory ...
... enough to light our sky at night. The only explanation that it is not is that the stars are moving away from us. An expanding universe must have started out infinitely small and agrees with the Big Bang Theory ...
PPT
... Dark Matter/Dark Energy • Dark Matter. An unknown “particle” that only interacts with as via gravity but whose mass is about 6 times more than all matter we can see. We can see its effects on galaxies • Dark Energy: (cosmological constant). A term in Einstein’s GR equations that makes space fly apa ...
... Dark Matter/Dark Energy • Dark Matter. An unknown “particle” that only interacts with as via gravity but whose mass is about 6 times more than all matter we can see. We can see its effects on galaxies • Dark Energy: (cosmological constant). A term in Einstein’s GR equations that makes space fly apa ...
Lecture 2
... • The Egyptian pyramids were built about 10 seconds ago • Copernicus and others convinced humanity that the Earth orbits the Sun about one second ago • Elizabeth II became Queen of England about 0.14 seconds ago • You were born about 0.04 seconds ago (assuming your age is 18) • Canada won the O ...
... • The Egyptian pyramids were built about 10 seconds ago • Copernicus and others convinced humanity that the Earth orbits the Sun about one second ago • Elizabeth II became Queen of England about 0.14 seconds ago • You were born about 0.04 seconds ago (assuming your age is 18) • Canada won the O ...
Ch. 21 notes-1
... After the big bang, matter in the universe separated into galaxies. Gas and dust spread throughout space in our galaxy. About five billion years ago, a giant cloud of gas and dust, or nebula, collapsed to form the solar system. Slowly the nebula shrank to form a spinning disk. As gravity pulled s ...
... After the big bang, matter in the universe separated into galaxies. Gas and dust spread throughout space in our galaxy. About five billion years ago, a giant cloud of gas and dust, or nebula, collapsed to form the solar system. Slowly the nebula shrank to form a spinning disk. As gravity pulled s ...
Lecture17
... and microwaves. The last glow from the plasma can propagate unimpeded through the universe. ...
... and microwaves. The last glow from the plasma can propagate unimpeded through the universe. ...
SOLUTIONS TO PROBLEM SET # 4
... 2) [20 points] The temperature of the cosmic background light today is T ≈ 3 K. At the time the universe became transparent, the temperature of the cosmic background light was T ≈ 3000 K. This means that the universe has expanded by a factor of 1000 since it became transparent. If the density of ma ...
... 2) [20 points] The temperature of the cosmic background light today is T ≈ 3 K. At the time the universe became transparent, the temperature of the cosmic background light was T ≈ 3000 K. This means that the universe has expanded by a factor of 1000 since it became transparent. If the density of ma ...
physics_cosmic_engine - HSC Guru
... 2. identify data sources, and gather, process and analyse information to assess one of the models of the Universe developed from the time of Aristotle to the time of Newton to identify limitations placed on the development of the model by the technology available at the time The early models were li ...
... 2. identify data sources, and gather, process and analyse information to assess one of the models of the Universe developed from the time of Aristotle to the time of Newton to identify limitations placed on the development of the model by the technology available at the time The early models were li ...
1_Introduction
... The Solar System is not expanding; it’s held together by gravity. Milky Way Galaxy is not expanding; it’s held together by gravity. ...
... The Solar System is not expanding; it’s held together by gravity. Milky Way Galaxy is not expanding; it’s held together by gravity. ...
No Slide Title
... cluster because the galaxies are rather faint and small objects scattered across 15 degrees of the sky. Below is photograph of the centre of the cluster showing the inner 4°x4° region. Most of the brightest objects in this picture are galaxies. The elliptical galaxy in the centre is M87. On the righ ...
... cluster because the galaxies are rather faint and small objects scattered across 15 degrees of the sky. Below is photograph of the centre of the cluster showing the inner 4°x4° region. Most of the brightest objects in this picture are galaxies. The elliptical galaxy in the centre is M87. On the righ ...
Anthropic Principle - Evidence for Christianity
... • If Earth’s crust thinner, too much volcanism and plate movement. • The Moon apparently formed from the Earth’s crust, when we were struck by a Mars-sized planet, a very flukey event! ...
... • If Earth’s crust thinner, too much volcanism and plate movement. • The Moon apparently formed from the Earth’s crust, when we were struck by a Mars-sized planet, a very flukey event! ...
To Infinity….and Beyond!!!
... field transforms to become our solar system, galaxy, and universe when traveling between them. Nine students should place their object at the appropriate marker and meet at the field goal to begin the journey through the solar system. As the students make their way through the solar system, Milky Wa ...
... field transforms to become our solar system, galaxy, and universe when traveling between them. Nine students should place their object at the appropriate marker and meet at the field goal to begin the journey through the solar system. As the students make their way through the solar system, Milky Wa ...
SUFFOLK COUNTY COMMUNITY COLLEGE
... Universe, as well as an appreciation of the scientific process that led to these ideas and concepts. Using both traditional paper-based and interactive computer-based laboratory material, the student will see for themselves how observations lead to an understanding of extremely remote astronomical p ...
... Universe, as well as an appreciation of the scientific process that led to these ideas and concepts. Using both traditional paper-based and interactive computer-based laboratory material, the student will see for themselves how observations lead to an understanding of extremely remote astronomical p ...
Big Bang
... Era of galaxies • Lasts from one billion years after Big Bang to present • Galaxies form • Gravitationally bound system of stars, gas, and dust ...
... Era of galaxies • Lasts from one billion years after Big Bang to present • Galaxies form • Gravitationally bound system of stars, gas, and dust ...
La teoria del big bang y la formacion del Universo
... 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, including protons, neutrons, and electrons. Though simple atomic nuclei formed within the first three minutes after the ...
... 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, including protons, neutrons, and electrons. Though simple atomic nuclei formed within the first three minutes after the ...
helium
... electron+anti-electron --> photon+photon is now greatly favored over the reverse reaction photon+photon --> electron+anti-electron. In fact, it is this electron + anti-electron annihilation that produces most of the photons that we now observe in the CMB. ...
... electron+anti-electron --> photon+photon is now greatly favored over the reverse reaction photon+photon --> electron+anti-electron. In fact, it is this electron + anti-electron annihilation that produces most of the photons that we now observe in the CMB. ...
AGN-Hubble
... If you plot the scale of the Universe vs time, the Hubble constant is the slope of the line now. If it’s really constant, then the age of the Universe is just 1/H [since H=v/D=(d/t)/d]. That’s because if you know how fast we are expanding, you can run the movie backwards and see when everything crun ...
... If you plot the scale of the Universe vs time, the Hubble constant is the slope of the line now. If it’s really constant, then the age of the Universe is just 1/H [since H=v/D=(d/t)/d]. That’s because if you know how fast we are expanding, you can run the movie backwards and see when everything crun ...
Chpt17-18
... Also, as the balloon expands we see all parts reseeding from all others. This explains why we see all the other galaxies speeding away from us. ...
... Also, as the balloon expands we see all parts reseeding from all others. This explains why we see all the other galaxies speeding away from us. ...
powerpoint
... 1) The amount of luminous matter in the universe appears to be too small to stop its expansion. This might imply that the universe would continue expanding forever, except that there seems to be a “dark matter” in the Universe. If there is enough dark matter, the universe could be “closed,” i.e. it ...
... 1) The amount of luminous matter in the universe appears to be too small to stop its expansion. This might imply that the universe would continue expanding forever, except that there seems to be a “dark matter” in the Universe. If there is enough dark matter, the universe could be “closed,” i.e. it ...
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.