PoS(AASKA14)174 - Proceeding of science
... a constant rate of stars ageing and being replaced. What instead became apparent in the late 1990’s is that the rate at which stars are formed has varied dramatically with time. That rate has increased from a low level in the early Universe to a major peak at some 3 billion years of age, followed by ...
... a constant rate of stars ageing and being replaced. What instead became apparent in the late 1990’s is that the rate at which stars are formed has varied dramatically with time. That rate has increased from a low level in the early Universe to a major peak at some 3 billion years of age, followed by ...
Word doc - GDN - University of Gloucestershire
... wavelengths towards the red end of the spectrum. Using observations well known from physics on the effects of relative motion on wavelength — the Doppler effect — the red shift in starlight is interpreted as the motion of the galaxy away from the observer. The more distant a galaxy, the greater the ...
... wavelengths towards the red end of the spectrum. Using observations well known from physics on the effects of relative motion on wavelength — the Doppler effect — the red shift in starlight is interpreted as the motion of the galaxy away from the observer. The more distant a galaxy, the greater the ...
Slides
... The gravitational potential determines where the galaxies form and where the ISW fluctuations are created! Thus the galaxies and the CMB should be correlated, though its not a direct template. Most of the cross correlation arises on large or intermediate angular scales (>1degree). The CMB is well de ...
... The gravitational potential determines where the galaxies form and where the ISW fluctuations are created! Thus the galaxies and the CMB should be correlated, though its not a direct template. Most of the cross correlation arises on large or intermediate angular scales (>1degree). The CMB is well de ...
What are your ideas about The Universe? - Harvard
... most people’s knowledge of dim and distant objects such as nebulae and galaxies comes mainly from images in books, where all the images are about the same size with no indication of scale. In this activity, a three-part questionnaire launches your students on discussions about where objects in space ...
... most people’s knowledge of dim and distant objects such as nebulae and galaxies comes mainly from images in books, where all the images are about the same size with no indication of scale. In this activity, a three-part questionnaire launches your students on discussions about where objects in space ...
Astro-2: History of the Universe
... • Redshifts can be measured very precisely, much more precisely than you know your height!!! For this reason astronomers generally say a galaxy is at a redshift z=0.4231, rather than quoting its distance • Distances can be known only to about 5% • In cosmology, as in all of physics, measurements ...
... • Redshifts can be measured very precisely, much more precisely than you know your height!!! For this reason astronomers generally say a galaxy is at a redshift z=0.4231, rather than quoting its distance • Distances can be known only to about 5% • In cosmology, as in all of physics, measurements ...
Science Says: What Scientific Evidence Can Say About the
... cooling down from an initial near-infinitely hot state. The first parameter means that time itself and the rest of the universe had a definite beginning sometime in the finite past, the second parameter means that the universe has expanded throughout its history and continues to expand even today, a ...
... cooling down from an initial near-infinitely hot state. The first parameter means that time itself and the rest of the universe had a definite beginning sometime in the finite past, the second parameter means that the universe has expanded throughout its history and continues to expand even today, a ...
exploring the solar system, the galaxies, and the
... Open the Amazing Space web site at http://amazing-space.stsci.edu/ in preparation for lab activities during which you will find resources to address specific Georgia Performance Standards related to Astronomy for grades 2, 4, and 6. Read these standards below, and select at least two topics for whic ...
... Open the Amazing Space web site at http://amazing-space.stsci.edu/ in preparation for lab activities during which you will find resources to address specific Georgia Performance Standards related to Astronomy for grades 2, 4, and 6. Read these standards below, and select at least two topics for whic ...
wk11noQ
... Is Dark Matter Really There? • The term “missing matter” was in fairly common use early on, but it is misleading because the matter really is there — it is not missing! • There were also attempts by some scientists (Milgrom & collaborators) to see if a MOdified theory of Newtonian Dynamics (MOND) m ...
... Is Dark Matter Really There? • The term “missing matter” was in fairly common use early on, but it is misleading because the matter really is there — it is not missing! • There were also attempts by some scientists (Milgrom & collaborators) to see if a MOdified theory of Newtonian Dynamics (MOND) m ...
Galaxies and the Universe
... to this theory, approximately 13.7 billion years ago, the universe began with an enormous explosion. The entire universe began to expand everywhere at the same time. ...
... to this theory, approximately 13.7 billion years ago, the universe began with an enormous explosion. The entire universe began to expand everywhere at the same time. ...
PowerPoint Presentation - Berkeley Center for Cosmological Physics
... sqrt{F} to try to localize w(zi). Unlike for LSS, for dark energy they do not localize well, and confuse interpretation. Also depends strongly on assumption of w(z>zmax) ...
... sqrt{F} to try to localize w(zi). Unlike for LSS, for dark energy they do not localize well, and confuse interpretation. Also depends strongly on assumption of w(z>zmax) ...
Article 8
... Big Bang - the birth of our universe. The universe we can observe is finite. It has a beginning in space and time, before which the concept of space and time has no meaning, because spacetime itself is a property of the universe. According to the Big Bang theory, the universe began about twelve to f ...
... Big Bang - the birth of our universe. The universe we can observe is finite. It has a beginning in space and time, before which the concept of space and time has no meaning, because spacetime itself is a property of the universe. According to the Big Bang theory, the universe began about twelve to f ...
PART 1 - Berrigasteiz
... Activity 0: Introduction to the unit: The Cosmic Clock Description Ss are introduced to Astronomy: first, the teacher elicits names and concepts known by students; next, the teacher tells them about some ideas of understanding the universe through history; finally, he or she asks them to make hypoth ...
... Activity 0: Introduction to the unit: The Cosmic Clock Description Ss are introduced to Astronomy: first, the teacher elicits names and concepts known by students; next, the teacher tells them about some ideas of understanding the universe through history; finally, he or she asks them to make hypoth ...
ISP205-2 Visions of the Universe
... Uranus has rings • Uranus has rings • Not visible with reflected light because they are sparse • A scientific idea can be proven wrong, but it cannot be proven to be right. • Scientific ideas cannot be proven right, because new observations may disprove it. • One team with less extensive data though ...
... Uranus has rings • Uranus has rings • Not visible with reflected light because they are sparse • A scientific idea can be proven wrong, but it cannot be proven to be right. • Scientific ideas cannot be proven right, because new observations may disprove it. • One team with less extensive data though ...
Sample pages 1 PDF
... Even so, the idea that all structures that exist mathematically also exist physically is the foundation of the parallel universe concept. This hypothesis, known as the ultimate ensemble, predicts the existence of all universes that can be defined by mathematical equations. But many physicists disagr ...
... Even so, the idea that all structures that exist mathematically also exist physically is the foundation of the parallel universe concept. This hypothesis, known as the ultimate ensemble, predicts the existence of all universes that can be defined by mathematical equations. But many physicists disagr ...
Ch. 25 - UTK Department of Physics and Astronomy
... 25.1 Dark Matter in the Universe Another way to measure the average mass of galaxies in a cluster is to calculate how much mass is required to keep the ...
... 25.1 Dark Matter in the Universe Another way to measure the average mass of galaxies in a cluster is to calculate how much mass is required to keep the ...
i. introduction - davis.k12.ut.us
... F. The history of the Universe spans a vast amount of time and contains at least seven steps critical to the existence of humans. 1. The Universe began roughly 14 billion years ago in an “explosion” known as the Big Bang. a. Clusters of galaxies are moving away from each other, and the speed of rece ...
... F. The history of the Universe spans a vast amount of time and contains at least seven steps critical to the existence of humans. 1. The Universe began roughly 14 billion years ago in an “explosion” known as the Big Bang. a. Clusters of galaxies are moving away from each other, and the speed of rece ...
THE TOPOLOGY OF THE UNIVERSE Is the Universe crumpled?
... are very low. Historically, W. de Sitter pointed out in 1917 to Einstein that his static and spherical universe model could put up with a different topology, namely that of projective space. The difference was not very large because these two alternatives are finite. The outstanding article by Fried ...
... are very low. Historically, W. de Sitter pointed out in 1917 to Einstein that his static and spherical universe model could put up with a different topology, namely that of projective space. The difference was not very large because these two alternatives are finite. The outstanding article by Fried ...
Structure of the Universe
... process of nuclear fusion. • It escapes in the form of light, other forms of radiation, heat, and wind. • Stars range in size from about the size of Earth to as much as 1,000 times the size of the sun. ...
... process of nuclear fusion. • It escapes in the form of light, other forms of radiation, heat, and wind. • Stars range in size from about the size of Earth to as much as 1,000 times the size of the sun. ...
ASTRO 1050 Distant Galaxies and the Expanding Universe
... between two points along the y-axis divided by the difference between two points along the x-axis. ...
... between two points along the y-axis divided by the difference between two points along the x-axis. ...
page proofs
... others the universe would expand for a time and then collapse back on itself. It is interesting to note that this theoretical work was established before Hubble measured the recession of the galaxies. Georges Lemaitre (1894–1966) was both a Catholic priest and professor of physics. He was fascinated ...
... others the universe would expand for a time and then collapse back on itself. It is interesting to note that this theoretical work was established before Hubble measured the recession of the galaxies. Georges Lemaitre (1894–1966) was both a Catholic priest and professor of physics. He was fascinated ...
Week 11 notes
... Is Dark Matter Really There? • The term “missing matter” was in fairly common use early on, but it is misleading because the matter really is there — it is not missing! • There were also attempts by some scientists (Milgrom & collaborators) to see if a MOdified theory of Newtonian Dynamics (MOND) m ...
... Is Dark Matter Really There? • The term “missing matter” was in fairly common use early on, but it is misleading because the matter really is there — it is not missing! • There were also attempts by some scientists (Milgrom & collaborators) to see if a MOdified theory of Newtonian Dynamics (MOND) m ...
The Extreme Universe of Gamma-ray Astronomy
... influences its ultimate fate WIMPs may determine our Cosmic Destiny! GLAST should be able to see gamma rays from WIMPs within 3 years of observations ...
... influences its ultimate fate WIMPs may determine our Cosmic Destiny! GLAST should be able to see gamma rays from WIMPs within 3 years of observations ...
Chapter 16 Galaxies and Dark Matter
... 16.1 Dark Matter in the Universe Galaxy mass measurements show that galaxies need between 3 and 10 times more mass than can be observed to explain their rotation curves. The discrepancy is even larger in galaxy clusters, which need 10 to 100 times more mass. The total needed is more than the sum of ...
... 16.1 Dark Matter in the Universe Galaxy mass measurements show that galaxies need between 3 and 10 times more mass than can be observed to explain their rotation curves. The discrepancy is even larger in galaxy clusters, which need 10 to 100 times more mass. The total needed is more than the sum of ...
fundamental_reality\holographic principle
... “As weird as the Holographic Principle is … it has become part of the mainstream of theoretical physics. It is no longer just a speculation about quantum gravity; it has become an everyday working tool, answering questions not only about quantum gravity but also about such prosaic things as the nuc ...
... “As weird as the Holographic Principle is … it has become part of the mainstream of theoretical physics. It is no longer just a speculation about quantum gravity; it has become an everyday working tool, answering questions not only about quantum gravity but also about such prosaic things as the nuc ...
This link is in pdf format for ease of reading
... was obtained with the second generation Wide-Field and Planetary Camera-2, designed and built at the Jet Propulsion Laboratory in Pasadena, Calif. The new camera was installed during the Hubble Space Telescope servicing mission, STS-61, in December 1993. WFPC-2 incorporates optics that correct for t ...
... was obtained with the second generation Wide-Field and Planetary Camera-2, designed and built at the Jet Propulsion Laboratory in Pasadena, Calif. The new camera was installed during the Hubble Space Telescope servicing mission, STS-61, in December 1993. WFPC-2 incorporates optics that correct for t ...
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.