Lecture - Ann Arbor Earth Science
... there are 350 billion galaxies in the observable universe. Galaxies tend to collect into superclusters surrounded by large voids. 10 million of these superclusters may exist. ...
... there are 350 billion galaxies in the observable universe. Galaxies tend to collect into superclusters surrounded by large voids. 10 million of these superclusters may exist. ...
has occurred over the past 14 billion years COSMIC DOWNSIZING
... have apparently been assembling from the earliest times until the present. The supermassive black holes that are still active, however, do not exhibit the same behavioral patterns as the distant quasars. Quasars are voracious consumers, greedily gobbling up the material around them at an enormous ra ...
... have apparently been assembling from the earliest times until the present. The supermassive black holes that are still active, however, do not exhibit the same behavioral patterns as the distant quasars. Quasars are voracious consumers, greedily gobbling up the material around them at an enormous ra ...
Introduction to Galaxies and Cosmology Exercises 2
... Also, some problems relating to active galactic nuclei and galaxy clusters are included. We will also work with the theoretical framework of cosmology, the Friedmann-Lemaı̂tre-Robinson-Walker equations and learn how to use them to relate observational quantities to the theory. The exercises will tou ...
... Also, some problems relating to active galactic nuclei and galaxy clusters are included. We will also work with the theoretical framework of cosmology, the Friedmann-Lemaı̂tre-Robinson-Walker equations and learn how to use them to relate observational quantities to the theory. The exercises will tou ...
Recent versions of the Design Argument
... as they were, not because they had been designed that way, but because, through natural selection, they had adapted to the demands of their environment. ...
... as they were, not because they had been designed that way, but because, through natural selection, they had adapted to the demands of their environment. ...
lecture27
... • The Milky Way’s halo stars are very old and their orbits have random orientations, suggesting that they did indeed form before the protogalactic cloud collapsed into a disk. The low abundances of heavy elements in halo stars tell us they were born before the star-gas-star cycle significantly enric ...
... • The Milky Way’s halo stars are very old and their orbits have random orientations, suggesting that they did indeed form before the protogalactic cloud collapsed into a disk. The low abundances of heavy elements in halo stars tell us they were born before the star-gas-star cycle significantly enric ...
Unit 2 - WordPress.com
... The Universe is about 14 billion years old. The Big Bang formed the universe. The Big Bang was a big explosion. We don’t know why it happened. The universe is very big and it is getting bigger every day, just like you. The universe is made up of everything – planets, solar systems, galaxies and blac ...
... The Universe is about 14 billion years old. The Big Bang formed the universe. The Big Bang was a big explosion. We don’t know why it happened. The universe is very big and it is getting bigger every day, just like you. The universe is made up of everything – planets, solar systems, galaxies and blac ...
Coupling and Collapse
... • If the particle moves in a radiation bath it will be suffering scattering by the many photons encountered on its path. • The scattering is anisotropic since the particle is moving in the direction defined by its velocity. • The particle will be hitting more photons in the front than in the back. • ...
... • If the particle moves in a radiation bath it will be suffering scattering by the many photons encountered on its path. • The scattering is anisotropic since the particle is moving in the direction defined by its velocity. • The particle will be hitting more photons in the front than in the back. • ...
Hubble Deep Field Image
... values; prior to the HDF no galaxies with a redshift value higher than 1 Helped in debate over the missing mass of the universe. Prior to the HDF there were theories of faint yet massive objects in the outer regions of galaxies such as red dwarves and planets making up this missing, non visible ma ...
... values; prior to the HDF no galaxies with a redshift value higher than 1 Helped in debate over the missing mass of the universe. Prior to the HDF there were theories of faint yet massive objects in the outer regions of galaxies such as red dwarves and planets making up this missing, non visible ma ...
Beginning of the Universe Classwork Name: 6th Grade PSI Science
... Name: __________________________ ...
... Name: __________________________ ...
ASTRO 1050 Distant Galaxies and the Expanding Universe
... On the last page are pictures showing what an elliptical galaxy would look like if it were located in different superclusters. Next to each galaxy, there is a spectrum of a bright star in the galaxy. The dark lines are ‘Balmer’ hydrogen absorption lines. These lines are not always found at the same ...
... On the last page are pictures showing what an elliptical galaxy would look like if it were located in different superclusters. Next to each galaxy, there is a spectrum of a bright star in the galaxy. The dark lines are ‘Balmer’ hydrogen absorption lines. These lines are not always found at the same ...
The Nature of Evolution - Western Washington University
... as natural selection, acting on the last generation of a given species is the only available genetic information that can be passed on to the next generation of that species and so on throughout time. The effect of repeating this process through time produces cumulative change in the historical subs ...
... as natural selection, acting on the last generation of a given species is the only available genetic information that can be passed on to the next generation of that species and so on throughout time. The effect of repeating this process through time produces cumulative change in the historical subs ...
- Life`s Big Questions
... know today are unchanged 2. The laws are constant throughout universe 3. Red shift is caused by light source moving away from us If universe is expanding & we roll back time, everything goes back to a point in space time from which it all started - The “Big Bang” ...
... know today are unchanged 2. The laws are constant throughout universe 3. Red shift is caused by light source moving away from us If universe is expanding & we roll back time, everything goes back to a point in space time from which it all started - The “Big Bang” ...
As far as - Sangeeta Malhotra
... the two effects will be valuable. Because their spectra give us accurate distances, we can see that these galaxies are distributed in clusters all the way out to the highest redshift visible. For example, one cluster, or “wall,” of galaxies lies at a distance of 6 billion light-years (redshift 0.67) ...
... the two effects will be valuable. Because their spectra give us accurate distances, we can see that these galaxies are distributed in clusters all the way out to the highest redshift visible. For example, one cluster, or “wall,” of galaxies lies at a distance of 6 billion light-years (redshift 0.67) ...
Cosmology: Black Holes, Dark Matter and Dark Energy
... million light-years from Earth. Astronomers presume that each of the supermassive black holes was once at the core of a separate galaxy, then the two galaxies collided, leaving the black holes orbiting each other. The black holes orbit each other about once every 150,000 years, the scientists say. ...
... million light-years from Earth. Astronomers presume that each of the supermassive black holes was once at the core of a separate galaxy, then the two galaxies collided, leaving the black holes orbiting each other. The black holes orbit each other about once every 150,000 years, the scientists say. ...
Why Study Cosmic Near Infrared Background? (1-4um)
... The SKA data should be correlated with CMB, and WMAP data are good enough! It is even plausible that the first convincing evidence for 21-cm from reionization would come from the cross-correlation signal. ...
... The SKA data should be correlated with CMB, and WMAP data are good enough! It is even plausible that the first convincing evidence for 21-cm from reionization would come from the cross-correlation signal. ...
society journal - Auckland Astronomical Society
... solar flare sends charged particles and radiation out into space. The Earth’s atmosphere and magnetic fields are usually adequate to protect us from these, but not completely during big events. The 1989 Montreal blackout, which was caused by solar activity, is the most recent example covered in this ...
... solar flare sends charged particles and radiation out into space. The Earth’s atmosphere and magnetic fields are usually adequate to protect us from these, but not completely during big events. The 1989 Montreal blackout, which was caused by solar activity, is the most recent example covered in this ...
Cosmological Aspects of Nucleosynthesis
... More than 3 neutrino-families would have contributed to the mass density of ultrarelativistic particles. This would have speeded up the expansion in the radiationdominated universe. Neutrino would decouple at higher temperature and Helium would have been overproduced. Agreement with elementary parti ...
... More than 3 neutrino-families would have contributed to the mass density of ultrarelativistic particles. This would have speeded up the expansion in the radiationdominated universe. Neutrino would decouple at higher temperature and Helium would have been overproduced. Agreement with elementary parti ...
Universe, Dark Energy and Dark Matter
... decisive evidence that the velocity υ characterizes the deformation of space cells and the acceleration a defines the gradient of this deformation. It is just this gradient that terminated in false representation of the expansion of the Universe. The dark energy hypothesis has been put forward just ...
... decisive evidence that the velocity υ characterizes the deformation of space cells and the acceleration a defines the gradient of this deformation. It is just this gradient that terminated in false representation of the expansion of the Universe. The dark energy hypothesis has been put forward just ...
f(R) Gravity, Relic Coherent Gravitons and Optical Chaos
... large negative pressure. This is the standard picture, in which this new ingredient should be some form of unclustered, non-zero vacuum energy, which, together with the clustered dark matter, drives the global dynamics. This is the so-called “concordance model” (ΛCDM), which gives, in agreement with ...
... large negative pressure. This is the standard picture, in which this new ingredient should be some form of unclustered, non-zero vacuum energy, which, together with the clustered dark matter, drives the global dynamics. This is the so-called “concordance model” (ΛCDM), which gives, in agreement with ...
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.