Introduction - WordPress.com
... 100 billion years from now the Universe will appear frozen in time as we look out into space. Only the light from the Local Group of galaxies will remain visible, if anyone is still around to see it. ...
... 100 billion years from now the Universe will appear frozen in time as we look out into space. Only the light from the Local Group of galaxies will remain visible, if anyone is still around to see it. ...
Introduction - MSD of Martinsville
... 100 billion years from now the Universe will appear frozen in time as we look out into space. Only the light from the Local Group of galaxies will remain visible, if anyone is still around to see it. ...
... 100 billion years from now the Universe will appear frozen in time as we look out into space. Only the light from the Local Group of galaxies will remain visible, if anyone is still around to see it. ...
eXtremely Fast Tr
... Expanding Universe! RussianAmerican physicist George Gamow: if all galaxies are moving away from all others, then universe must have been at a point some time in the past. Fred Hoyle: Thinks Gamow’s idea is bogus. Refers to Gamow’s idea as “The Big Bang” Only problem: everybody likes the name ...
... Expanding Universe! RussianAmerican physicist George Gamow: if all galaxies are moving away from all others, then universe must have been at a point some time in the past. Fred Hoyle: Thinks Gamow’s idea is bogus. Refers to Gamow’s idea as “The Big Bang” Only problem: everybody likes the name ...
PowerPoint Presentation - Inflation, String Theory
... The total energy of radiation in the universe now is greater than 1053 g. According to the Big Bang theory, the total number of photons in the universe practically did not change during its evolution, but the energy of each photon decreased as the temperature of the universe T. ...
... The total energy of radiation in the universe now is greater than 1053 g. According to the Big Bang theory, the total number of photons in the universe practically did not change during its evolution, but the energy of each photon decreased as the temperature of the universe T. ...
R. Bender (ESO)
... formation processes that may have produced a large fraction of all stars in the universe, especially those in spheroids. ALMA will allow to probe the collapse of the first massive galaxy fragments before they have largely turned into stars. ALMA can detect molecular absorption lines in many quas ...
... formation processes that may have produced a large fraction of all stars in the universe, especially those in spheroids. ALMA will allow to probe the collapse of the first massive galaxy fragments before they have largely turned into stars. ALMA can detect molecular absorption lines in many quas ...
Teacher`s Guide Understanding: The Universe
... determine how much they know about star evolution. 2. If students do not fully understand the terms red giant, white dwarf, neutron star, supernova, and black hole, have them use the research materials you have provided or the Internet to become acquainted with the terms and understand how they rela ...
... determine how much they know about star evolution. 2. If students do not fully understand the terms red giant, white dwarf, neutron star, supernova, and black hole, have them use the research materials you have provided or the Internet to become acquainted with the terms and understand how they rela ...
Looking back in time to the big bang theory
... The more blue shifted the light is from a galaxy the slower it is moving towards our own galaxy ...
... The more blue shifted the light is from a galaxy the slower it is moving towards our own galaxy ...
The initial conditions and the large
... . The energy scales at stake in the Early Universe are orders of magnitude higher than anything we can reach on Earth. ...
... . The energy scales at stake in the Early Universe are orders of magnitude higher than anything we can reach on Earth. ...
Lecture Thirteen (Powerpoint format) - Flash
... Zel’dovich Pancakes and Filaments In the early 1970s, long before the advent of extensive largescale surveys or large computer simulations, Yakov Zel’dovich and colleagues worked out much of the basic physics of structure formation in the early universe using little more than pure thought. In o ...
... Zel’dovich Pancakes and Filaments In the early 1970s, long before the advent of extensive largescale surveys or large computer simulations, Yakov Zel’dovich and colleagues worked out much of the basic physics of structure formation in the early universe using little more than pure thought. In o ...
Eye on the Sky - Sci-Port
... Universe: the totality of known or supposed objects and phenomena throughout space; the cosmos; macrocosm. Galaxy: a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. Black Hole: a massive object with zero volume and infinite mass, ...
... Universe: the totality of known or supposed objects and phenomena throughout space; the cosmos; macrocosm. Galaxy: a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. Black Hole: a massive object with zero volume and infinite mass, ...
dm - The Institute of Mathematical Sciences
... astronomical objects not necessarily visible to the naked eye. It is a picture of calm which hides the fact that the Universe is in fact fast expanding. This was first noted by Edwin Hubble in 1929. Hubble observed that the galaxies outside of our own Milky Way galaxy are all moving away from us at ...
... astronomical objects not necessarily visible to the naked eye. It is a picture of calm which hides the fact that the Universe is in fact fast expanding. This was first noted by Edwin Hubble in 1929. Hubble observed that the galaxies outside of our own Milky Way galaxy are all moving away from us at ...
Scientific American - September 2015
... some unseen component that makes its presence known only by its gravitational pull on the visible stars. The discovery turned even stranger in the 1980s, when new models of the big bang showed that the invisible (or “dark”) stuff—whatever it is—could not consist of ordinary atoms. That left two unse ...
... some unseen component that makes its presence known only by its gravitational pull on the visible stars. The discovery turned even stranger in the 1980s, when new models of the big bang showed that the invisible (or “dark”) stuff—whatever it is—could not consist of ordinary atoms. That left two unse ...
IDS 102
... The definition of a light year also mentions other units. We will not be using “parsecs” in this class, but we will mention “astronomic units” What is the definition of an astronomic unit (AU)? ...
... The definition of a light year also mentions other units. We will not be using “parsecs” in this class, but we will mention “astronomic units” What is the definition of an astronomic unit (AU)? ...
CHAPTER 29 STARS 240 points
... spectral lines. Spectral lines help scientists determine the speed of a star’s motion. Motion between the source of light and the observer cause the spectral lines to shift in wavelength. Depending on whether the wavelength is shorter or longer, the observer can determine if the star is moving towar ...
... spectral lines. Spectral lines help scientists determine the speed of a star’s motion. Motion between the source of light and the observer cause the spectral lines to shift in wavelength. Depending on whether the wavelength is shorter or longer, the observer can determine if the star is moving towar ...
Lecture 5
... History of The Milky Way & galaxies The Greek philosophers Anaxagoras (ca. 500–428 BC) and Democritus (450– 370 B.C.) proposed that the bright band on the night sky known as the Milky Way might consist of distant stars. Aristotle (384-322 B.C.), however, believed the Milky Way to be caused by "the ...
... History of The Milky Way & galaxies The Greek philosophers Anaxagoras (ca. 500–428 BC) and Democritus (450– 370 B.C.) proposed that the bright band on the night sky known as the Milky Way might consist of distant stars. Aristotle (384-322 B.C.), however, believed the Milky Way to be caused by "the ...
Slide 1
... History of The Milky Way & galaxies The Greek philosophers Anaxagoras (ca. 500–428 BC) and Democritus (450– 370 B.C.) proposed that the bright band on the night sky known as the Milky Way might consist of distant stars. Aristotle (384-322 B.C.), however, believed the Milky Way to be caused by "the ...
... History of The Milky Way & galaxies The Greek philosophers Anaxagoras (ca. 500–428 BC) and Democritus (450– 370 B.C.) proposed that the bright band on the night sky known as the Milky Way might consist of distant stars. Aristotle (384-322 B.C.), however, believed the Milky Way to be caused by "the ...
Slide 1
... constant has been revived as a simple explanation for dark energy. Other problems with the model Aside from Hubble's law, the cosmic microwave background radiation is used as empirical evidence of the Big Bang model. A static universe model has to explain this radiation in some other way. Also there ...
... constant has been revived as a simple explanation for dark energy. Other problems with the model Aside from Hubble's law, the cosmic microwave background radiation is used as empirical evidence of the Big Bang model. A static universe model has to explain this radiation in some other way. Also there ...
Written in the stars THE NOBEL PRIZE IN PHYSICS 2011
... receding from us. The light’s wavelength gets stretched, and the longer the wave, the redder its colour. The conclusion was that the galaxies are rushing away from us and each other, and the farther away they are, the faster they move – this is known as Hubble’s law. The Universe is growing. ...
... receding from us. The light’s wavelength gets stretched, and the longer the wave, the redder its colour. The conclusion was that the galaxies are rushing away from us and each other, and the farther away they are, the faster they move – this is known as Hubble’s law. The Universe is growing. ...
Our Universe
... •This theory states that everything in the universe will continue to move outward and away with continual expansion infinitely. •Eventually, all stars would burn out leaving our universe with empty darkness. ...
... •This theory states that everything in the universe will continue to move outward and away with continual expansion infinitely. •Eventually, all stars would burn out leaving our universe with empty darkness. ...
The Universe - Cloudfront.net
... highlight or underline the main ideas that answer the essential question, you should not highlight everything: • Essential Question: How do scientists think our universe was created and what evidence supports it? ...
... highlight or underline the main ideas that answer the essential question, you should not highlight everything: • Essential Question: How do scientists think our universe was created and what evidence supports it? ...
Unit 2 PowerPoint Unit2_BigHistoryProject2013_PPT-7
... • Over time, human observations of the planets and stars became more precise and led some scientists to suggest alternative theories. • Copernicus, Kepler, and Galileo contributed to a new view which put the Sun at the center of the Universe, with the Earth moving around it in an elliptical (rather ...
... • Over time, human observations of the planets and stars became more precise and led some scientists to suggest alternative theories. • Copernicus, Kepler, and Galileo contributed to a new view which put the Sun at the center of the Universe, with the Earth moving around it in an elliptical (rather ...
The Big Bang Theory, Geocentric, and Heliocentric Models of the
... The Big Bang Theory (Write) What does this theory tell us? 1. What occurred at the beginning of the universe – about 14 billion years ago. 2. Everything was packed into a small, dense singularity. 3. Eventually, the singularity exploded sending space and time in all directions. 4. After explosion, ...
... The Big Bang Theory (Write) What does this theory tell us? 1. What occurred at the beginning of the universe – about 14 billion years ago. 2. Everything was packed into a small, dense singularity. 3. Eventually, the singularity exploded sending space and time in all directions. 4. After explosion, ...
Lecture 2
... - When the star dies, they are expelled into space…. to form new stars and planets. Most of the atoms in our bodies were created in the core of a star! ...
... - When the star dies, they are expelled into space…. to form new stars and planets. Most of the atoms in our bodies were created in the core of a star! ...
LECTURE 2: I.Our Place in the Universe
... Telescopes gather light emitted from objects in the universe ...
... Telescopes gather light emitted from objects in the universe ...
Dark Energy and Dark Matter - Appalachian State University
... dark matter particles • Fermi was launched four years ago to detect collisions • Not enough data to prove anything yet ...
... dark matter particles • Fermi was launched four years ago to detect collisions • Not enough data to prove anything yet ...
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.