The Cosmic Microwave Background and the Big Bang Theory of the
... dimension, which we 3-dimensional beings can visualize but is not part of the 2dimensional universe that is the surface of the balloon. As the balloon expands, the 2dimensional universe starts from a very small area and gets larger. But where is the center of the surface? It is NOT the center of the ...
... dimension, which we 3-dimensional beings can visualize but is not part of the 2dimensional universe that is the surface of the balloon. As the balloon expands, the 2dimensional universe starts from a very small area and gets larger. But where is the center of the surface? It is NOT the center of the ...
Birth, Age and the Future of the Universe
... symmetry breaking; it is still not fully understood. And yet it is decisive for our existence. Hundred seconds after the Big Bang the temperature had dropped to 1000 million degrees and for the first time protons and neutrons could stick together to form the most simple elements, deuterium and heliu ...
... symmetry breaking; it is still not fully understood. And yet it is decisive for our existence. Hundred seconds after the Big Bang the temperature had dropped to 1000 million degrees and for the first time protons and neutrons could stick together to form the most simple elements, deuterium and heliu ...
Training
... majestic spiral galaxy NGC 4414 was imaged by the Hubble Space Telescope as part of the HST Key Project on the Extragalactic Distance Scale. An international team of astronomers, led by Dr. Wendy Freedman of the Observatories of the Carnegie Institution of Washington, observed this galaxy on 13 diff ...
... majestic spiral galaxy NGC 4414 was imaged by the Hubble Space Telescope as part of the HST Key Project on the Extragalactic Distance Scale. An international team of astronomers, led by Dr. Wendy Freedman of the Observatories of the Carnegie Institution of Washington, observed this galaxy on 13 diff ...
Our Place in a Vast Universe
... could not be measured until centuries later. The first precise measurements of the size of the solar system were made during the transits of Venus of 1761 and 1769, when Venus passed directly in front of the sun and could be seen as a small black disk covering a tiny part of the sun. The time it tak ...
... could not be measured until centuries later. The first precise measurements of the size of the solar system were made during the transits of Venus of 1761 and 1769, when Venus passed directly in front of the sun and could be seen as a small black disk covering a tiny part of the sun. The time it tak ...
1. Put these objects in the correct order, from nearest
... Suppose that, at this very moment, students are studying astronomy on planets in Andromeda. Could they know that we exist here on Earth? A. Yes, because we can see stars in Andromeda, so they can see us in the Milky Way. B. No, the light from the solar system has not yet reached Andromeda. C. No, th ...
... Suppose that, at this very moment, students are studying astronomy on planets in Andromeda. Could they know that we exist here on Earth? A. Yes, because we can see stars in Andromeda, so they can see us in the Milky Way. B. No, the light from the solar system has not yet reached Andromeda. C. No, th ...
PPT - Wayne State University Physics and Astronomy
... This dark matter is believed to surround most galaxies, and the massto-light ratio for certain galaxies can exceed 300 times that of the sun. ...
... This dark matter is believed to surround most galaxies, and the massto-light ratio for certain galaxies can exceed 300 times that of the sun. ...
TR-16
... Dark energy can be generalized to quintessence, which is a dynamic time-evolving spatially-changing form of energy that could have negative pressure. Another explanation of dark energy to a cosmic field associated with inflation. The problem could also be with general relativity itself. ...
... Dark energy can be generalized to quintessence, which is a dynamic time-evolving spatially-changing form of energy that could have negative pressure. Another explanation of dark energy to a cosmic field associated with inflation. The problem could also be with general relativity itself. ...
Intelligent life in cosmology
... Homo sapiens was inevitable, determined by the initial state and the initial conditions of the universe. ‘Random ’ variation does not mean uncaused. It just means unpredictable for human beings. Therefore, at this ultimate physical level, Darwin claims that his own theory is only an approximation. D ...
... Homo sapiens was inevitable, determined by the initial state and the initial conditions of the universe. ‘Random ’ variation does not mean uncaused. It just means unpredictable for human beings. Therefore, at this ultimate physical level, Darwin claims that his own theory is only an approximation. D ...
Astronomy 401 Lecture 1 Overview of the Universe 1 Class overview
... distant stars might be less numerous or less luminous than nearby stars. • Assumed that universe is infinitely large. If universe extends to a maximum distance rmax λ, then only a fraction F ∼ rmax /λ of the sky will be covered with stars. Note that this result will also be found if the universe i ...
... distant stars might be less numerous or less luminous than nearby stars. • Assumed that universe is infinitely large. If universe extends to a maximum distance rmax λ, then only a fraction F ∼ rmax /λ of the sky will be covered with stars. Note that this result will also be found if the universe i ...
Lecture Thirteen (Powerpoint format) - Flash
... The map of the anisotropies on the cosmic microwave background can be used to constrain theories of the very early universe, including inflation. The key idea here is that very distant regions on the microwave background were not in causal contact at the surface of last scattering. Hence, whatev ...
... The map of the anisotropies on the cosmic microwave background can be used to constrain theories of the very early universe, including inflation. The key idea here is that very distant regions on the microwave background were not in causal contact at the surface of last scattering. Hence, whatev ...
Lesson 1 - Structure of the Universe - Hitchcock
... • Earth is a special place because it has just the right combination of conditions to support life. • The presence of air and water supports the growth and development of plants and animals. • The atmosphere contains an ozone layer that absorbs harmful solar radiation and other gases that keep Earth ...
... • Earth is a special place because it has just the right combination of conditions to support life. • The presence of air and water supports the growth and development of plants and animals. • The atmosphere contains an ozone layer that absorbs harmful solar radiation and other gases that keep Earth ...
Lesson 1 - Structure of the Universe - Hitchcock
... • Earth is a special place because it has just the right combination of conditions to support life. • The presence of air and water supports the growth and development of plants and animals. • The atmosphere contains an ozone layer that absorbs harmful solar radiation and other gases that keep Earth ...
... • Earth is a special place because it has just the right combination of conditions to support life. • The presence of air and water supports the growth and development of plants and animals. • The atmosphere contains an ozone layer that absorbs harmful solar radiation and other gases that keep Earth ...
The IR Universe
... Spitzer has found optically invisible galaxies so distant that we see them as they were only 3 billion years after the Big Bang. These galaxies are obscured by silicate dust, suggesting that planets could have formed even at this early time in the history of the Universe. ...
... Spitzer has found optically invisible galaxies so distant that we see them as they were only 3 billion years after the Big Bang. These galaxies are obscured by silicate dust, suggesting that planets could have formed even at this early time in the history of the Universe. ...
SOLUTIONS TO PROBLEM SET # 4
... ρair ≈ 1.2 kg/ m3 at sea level at a temperature T = 20◦ C = 68◦ F . (It becomes denser when cooler, and less dense when warmer.) Thus, the density of matter at the time of primordial nucleosynthesis is less than the density of the Earth’s air at sea level, by a factor of a hundred. (Although the uni ...
... ρair ≈ 1.2 kg/ m3 at sea level at a temperature T = 20◦ C = 68◦ F . (It becomes denser when cooler, and less dense when warmer.) Thus, the density of matter at the time of primordial nucleosynthesis is less than the density of the Earth’s air at sea level, by a factor of a hundred. (Although the uni ...
Document
... If 11 finely-tuned factors exist, then we have no right to expect another earth -like planet in the entire observable universe!! ...
... If 11 finely-tuned factors exist, then we have no right to expect another earth -like planet in the entire observable universe!! ...
Revision Guide (Unit 2 Module 5) - Pearson Schools and FE Colleges
... (or two or all of these might be true). Today, it is generally accepted that the universe is not infinite, and that it is expanding rather than static. The Cosmological Principle states that the universe has a generally uniform appearance. On a large scale, regions close to us are similar to the mos ...
... (or two or all of these might be true). Today, it is generally accepted that the universe is not infinite, and that it is expanding rather than static. The Cosmological Principle states that the universe has a generally uniform appearance. On a large scale, regions close to us are similar to the mos ...
Build your own FREE website at Tripod.com
... determine the distance to any Cepheid in the observable vicinity. Hubble became the first astronomer to discover an independent galaxy outside the confines of the Milky Way. Hubble calculated the distance of the Andromeda Galaxy to be 900,000 light years away; larger than the predicted size of our o ...
... determine the distance to any Cepheid in the observable vicinity. Hubble became the first astronomer to discover an independent galaxy outside the confines of the Milky Way. Hubble calculated the distance of the Andromeda Galaxy to be 900,000 light years away; larger than the predicted size of our o ...
natsci9+
... plasma recombination and transition to matter dominance T ~ 105 years. The falling temperature reached a few thousand degrees (a/a0 ~ 10-3; a = radius at time of emission; a0 – initial radius; ~ 10-20 g/cm3), two things of interest happened: universe ceased to be radiation – dominated and became ...
... plasma recombination and transition to matter dominance T ~ 105 years. The falling temperature reached a few thousand degrees (a/a0 ~ 10-3; a = radius at time of emission; a0 – initial radius; ~ 10-20 g/cm3), two things of interest happened: universe ceased to be radiation – dominated and became ...
chapter 13 cosmology
... learn what the universe was like in the past. However, there is a limit to how far back in time we can do this. If the universe is expanding and its volume is increasing now, then, in the past, the universe was smaller and things must have been crowded closer together. In fact, this has been confirm ...
... learn what the universe was like in the past. However, there is a limit to how far back in time we can do this. If the universe is expanding and its volume is increasing now, then, in the past, the universe was smaller and things must have been crowded closer together. In fact, this has been confirm ...
E:\2012-2013\SSU\PHS 207spring 2013\3rd test 4
... stars much older than 10 billion years and that others are 2nd and 3rd generation stars that could NOT have developed in just 10 billion years ...
... stars much older than 10 billion years and that others are 2nd and 3rd generation stars that could NOT have developed in just 10 billion years ...
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. ...
Slide 1
... with starting the Trojan War. Alone among the Olympians, she was excluded from the arranged marriage of Peleus and Thetis because of her troublemaking inclinations. But exclusion was no deterrent. She tossed the Apple of Discord into the party, a golden apple inscribed καλλίστῃ (kallistei) – "to the ...
... with starting the Trojan War. Alone among the Olympians, she was excluded from the arranged marriage of Peleus and Thetis because of her troublemaking inclinations. But exclusion was no deterrent. She tossed the Apple of Discord into the party, a golden apple inscribed καλλίστῃ (kallistei) – "to the ...
Chapter 18 - the Universe Begins
... By the first second after the Big Bang, the fundamental particles of matter had formed. Protons, neutrons and electrons existed. By three seconds old, the Universe contained the basic and simplest elements—almost all hydrogen and some helium. However, it took another 380 000 years before the Univers ...
... By the first second after the Big Bang, the fundamental particles of matter had formed. Protons, neutrons and electrons existed. By three seconds old, the Universe contained the basic and simplest elements—almost all hydrogen and some helium. However, it took another 380 000 years before the Univers ...
creation of a cosmology: big bang theory _eng
... cosmology known as the Steady State Theory. Fred Hoyle (who despairingly coined the term Big Bang) and his colleagues constructed a model of the universe that was widely accepted for religious reasons if not so much for its scientific hypothesis. Hoyle suggested that the universe is infinitely old a ...
... cosmology known as the Steady State Theory. Fred Hoyle (who despairingly coined the term Big Bang) and his colleagues constructed a model of the universe that was widely accepted for religious reasons if not so much for its scientific hypothesis. Hoyle suggested that the universe is infinitely old a ...
The Observable Universe: Redshift, Distances and the Hubble-Law
... • Measuring Hubble expansion needs to measure distances beyond Virgo cluster measure expansion of Coma cluster against Virgo! • SN Ia obviously are very good standard candles (since 1998) are observable for z < 2. • Calibration error < 0.1 mag possible? ...
... • Measuring Hubble expansion needs to measure distances beyond Virgo cluster measure expansion of Coma cluster against Virgo! • SN Ia obviously are very good standard candles (since 1998) are observable for z < 2. • Calibration error < 0.1 mag possible? ...