Galaxies - WordPress.com
... A Model of the Beginning • More and more stars formed, matured, and died, making more and more heavier elements. • Supernovas and dying red giants released the heavier elements ...
... A Model of the Beginning • More and more stars formed, matured, and died, making more and more heavier elements. • Supernovas and dying red giants released the heavier elements ...
Lecture1
... • For that to happen, you MUST get an account in Blackboard • Sections next week are all in the basement of Campbell Hall • This is not a mathematical course, but there is simple algebra in it (like L=R2 T4 ) a bit. Critical thinking IS required. • The main source of material is the book, but lectur ...
... • For that to happen, you MUST get an account in Blackboard • Sections next week are all in the basement of Campbell Hall • This is not a mathematical course, but there is simple algebra in it (like L=R2 T4 ) a bit. Critical thinking IS required. • The main source of material is the book, but lectur ...
Frontiers of Physics - Wright State University
... Perhaps the most important characteristic of the universe is that all galaxies except those in our local cluster seem to be moving away from us at speeds proportional to their distance from our galaxy. It looks as if a gigantic explosion, universally called the Big Bang, threw matter out some billio ...
... Perhaps the most important characteristic of the universe is that all galaxies except those in our local cluster seem to be moving away from us at speeds proportional to their distance from our galaxy. It looks as if a gigantic explosion, universally called the Big Bang, threw matter out some billio ...
Chapter 34 - mrphysicsportal.net
... Perhaps the most important characteristic of the universe is that all galaxies except those in our local cluster seem to be moving away from us at speeds proportional to their distance from our galaxy. It looks as if a gigantic explosion, universally called the Big Bang, threw matter out some billio ...
... Perhaps the most important characteristic of the universe is that all galaxies except those in our local cluster seem to be moving away from us at speeds proportional to their distance from our galaxy. It looks as if a gigantic explosion, universally called the Big Bang, threw matter out some billio ...
The universe is faster, colder, and wackier than anything we can
... AVOID THE VOIDS Maps of cosmic large-scale structure, such as these slices from the Sloan Digital Sky Survey, reveal that matter is clumped in sheets and filaments that surround vast regions (dark areas) of virtually empty space. Such voids have only an occasional atom per cubic meter. ...
... AVOID THE VOIDS Maps of cosmic large-scale structure, such as these slices from the Sloan Digital Sky Survey, reveal that matter is clumped in sheets and filaments that surround vast regions (dark areas) of virtually empty space. Such voids have only an occasional atom per cubic meter. ...
Syllabus - University of Texas Rio Grande Valley
... State the three main types of galaxies. State the two main components of spiral galaxies (disk, spheroidal). State the two main parts of the spheroidal component of spiral galaxies (bulge, halo). State which type(s) of galaxies present a spheroidal component. State the different methods used to dete ...
... State the three main types of galaxies. State the two main components of spiral galaxies (disk, spheroidal). State the two main parts of the spheroidal component of spiral galaxies (bulge, halo). State which type(s) of galaxies present a spheroidal component. State the different methods used to dete ...
Lecture 1, PPT version
... • What makes a good “theory”? • Does the scientific method have an endpoint? Why or why not? • In what way is astronomy a “passive” science compared to other sciences (e.g., chemistry, biology)? ...
... • What makes a good “theory”? • Does the scientific method have an endpoint? Why or why not? • In what way is astronomy a “passive” science compared to other sciences (e.g., chemistry, biology)? ...
Chapter 17
... Protons and As the universe expanded, it cooled down as its energy spread out over neutrons form a larger volume. About four minutes after the Big Bang, the universe at 4 minutes had cooled enough that protons and neutrons could stick together to form the nuclei of atoms. Because atoms were still fl ...
... Protons and As the universe expanded, it cooled down as its energy spread out over neutrons form a larger volume. About four minutes after the Big Bang, the universe at 4 minutes had cooled enough that protons and neutrons could stick together to form the nuclei of atoms. Because atoms were still fl ...
Diameter of the Milky Way
... Undetectable particles are some of nature’s secrets. Charged particles will bend when moving in a magnetic field. All of the above are scientific hypotheses. Explanation: If protons didn’t carry electric charge, they wouldn’t be deflected when crossing a magnetic field. This would be a test for show ...
... Undetectable particles are some of nature’s secrets. Charged particles will bend when moving in a magnetic field. All of the above are scientific hypotheses. Explanation: If protons didn’t carry electric charge, they wouldn’t be deflected when crossing a magnetic field. This would be a test for show ...
ISP 205 Review Questions, Week 13
... 2. A pulsating variable star has a period of 10 days. About how many times more luminous is it than the Sun? Refer to Fig. 15.12 in the textbook. It is about 3000 times more luminous than the Sun. Once you know the star’s luminosity L, you can calculate its distance r from the measured apparent bri ...
... 2. A pulsating variable star has a period of 10 days. About how many times more luminous is it than the Sun? Refer to Fig. 15.12 in the textbook. It is about 3000 times more luminous than the Sun. Once you know the star’s luminosity L, you can calculate its distance r from the measured apparent bri ...
Lesson 55 – The Structure of the Universe - science
... comparison spectrum of an element on Earth, at rest compared with the observer, is shown above and below each galactic spectrum. For very high speeds the simple formula cannot be used and the effects of special relativity have to be allowed for. It is important to realise that the Doppler shift will ...
... comparison spectrum of an element on Earth, at rest compared with the observer, is shown above and below each galactic spectrum. For very high speeds the simple formula cannot be used and the effects of special relativity have to be allowed for. It is important to realise that the Doppler shift will ...
Astronomy (stars, galaxies and the Universe)
... All stars are created from the gases in a nebula When the contracting gas and dust from a nebula become so dense and hot that nuclear fusion begins, the protostar begins to shine When a star begins to run out of fuel, its core shrinks and its outer portion expands The evolutionary path of a star dep ...
... All stars are created from the gases in a nebula When the contracting gas and dust from a nebula become so dense and hot that nuclear fusion begins, the protostar begins to shine When a star begins to run out of fuel, its core shrinks and its outer portion expands The evolutionary path of a star dep ...
Intelligent life in cosmology
... technology, a rocket technology which is even today being experimented with, it should be possible to send a probe between the stars at 1/10 light speed. At such a speed, probes would be everywhere in the entire galaxy within a few million years. And all for the cost of a single probe! Almost any mo ...
... technology, a rocket technology which is even today being experimented with, it should be possible to send a probe between the stars at 1/10 light speed. At such a speed, probes would be everywhere in the entire galaxy within a few million years. And all for the cost of a single probe! Almost any mo ...
Powerpoint
... • Distance from the Sun to Pluto – 0.006 light years = 6 x 109 km • Diameter of the Sun – 7 x 105 km • You could fit 108 Suns in the distance between the Sun and its closest neighbour • There is a lot of empty space between stars (or between stellar systems) in galaxies ...
... • Distance from the Sun to Pluto – 0.006 light years = 6 x 109 km • Diameter of the Sun – 7 x 105 km • You could fit 108 Suns in the distance between the Sun and its closest neighbour • There is a lot of empty space between stars (or between stellar systems) in galaxies ...
Our Place in the Universe (Chapter 1) The Structure and Size of the
... The Sun is a star. The Moon only reflects light from the Sun, so it is not a star. Stars are large balls of hot gas, mostly hydrogen and helium The Sun generates heat and light by a process called nuclear fusion This is different from what happens in nuclear power stations ...
... The Sun is a star. The Moon only reflects light from the Sun, so it is not a star. Stars are large balls of hot gas, mostly hydrogen and helium The Sun generates heat and light by a process called nuclear fusion This is different from what happens in nuclear power stations ...
~Crowfoot
... 4)2 The stars in this “Jewel Box” of the southern hemisphere are a) young stars still in their nursery “open cluster.” b) not physically associated, but aligned along our line of sight. c) in the nearest globular cluster to Earth. 5)2 This world is Io a) 10 AU from the sun b) Io, one of the Galilean ...
... 4)2 The stars in this “Jewel Box” of the southern hemisphere are a) young stars still in their nursery “open cluster.” b) not physically associated, but aligned along our line of sight. c) in the nearest globular cluster to Earth. 5)2 This world is Io a) 10 AU from the sun b) Io, one of the Galilean ...
Astronomy (stars, galaxies and the Universe)
... All stars are created from the gases in a nebula When the contracting gas and dust from a nebula become so dense and hot that nuclear fusion begins, the protostar begins to shine When a star begins to run out of fuel, its core shrinks and its outer portion expands The evolutionary path of a star dep ...
... All stars are created from the gases in a nebula When the contracting gas and dust from a nebula become so dense and hot that nuclear fusion begins, the protostar begins to shine When a star begins to run out of fuel, its core shrinks and its outer portion expands The evolutionary path of a star dep ...
Course 107: The Big Bang and the Anthropic Principle
... debate. But evolution is not scientific; it’s totally religious, being believed by faith. ● Until 1916, Einstein believed that the universe had no beginning. But his field equations of general relativity predicted an _____ universe. Because he didn’t like this conclusion, he his equations. Einstein ...
... debate. But evolution is not scientific; it’s totally religious, being believed by faith. ● Until 1916, Einstein believed that the universe had no beginning. But his field equations of general relativity predicted an _____ universe. Because he didn’t like this conclusion, he his equations. Einstein ...
Space Environment is an Inexhaustible Source for Conceptual
... been generating electric current moving a conductor within a magnetic field. Our system does not include the magnetic field at all. We have almost completed building of a new installation. It is based on implemented quantum solutions called The Maternity, mentioned in paper Which physics prohibits p ...
... been generating electric current moving a conductor within a magnetic field. Our system does not include the magnetic field at all. We have almost completed building of a new installation. It is based on implemented quantum solutions called The Maternity, mentioned in paper Which physics prohibits p ...
Your Place in Space and Time
... a few dozen galaxies, such as our own Local Group, or larger clusters containing up to a few thousand galaxies. ...
... a few dozen galaxies, such as our own Local Group, or larger clusters containing up to a few thousand galaxies. ...
Great Astronomers of the 20th Century
... Near the galaxy center--fast rotation Far out in the galaxy--slow rotation Just like the planets Only true when the mass is centrally concentrated – Solar system is a good example – Galaxies apparently are not ...
... Near the galaxy center--fast rotation Far out in the galaxy--slow rotation Just like the planets Only true when the mass is centrally concentrated – Solar system is a good example – Galaxies apparently are not ...
- Fermi Gamma-ray Space Telescope
... Photons in CMBR come from surface of last scattering – where they stop interacting with matter and travel freely through space CMBR photons emanate from a cosmic photosphere – like the surface of the Sun – except that we inside it looking out The cosmic photosphere has a temperature which characteri ...
... Photons in CMBR come from surface of last scattering – where they stop interacting with matter and travel freely through space CMBR photons emanate from a cosmic photosphere – like the surface of the Sun – except that we inside it looking out The cosmic photosphere has a temperature which characteri ...
Document
... Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher ...
... Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher ...
2. The Three Pillars of the Big Bang Theory
... In Chap. 1, we learned of the history of astronomy culminating in the debate concerning the nature of the spiral nebulae. The correct answer turned out to be that the spiral nebulae are galaxies much like our own. Vesto Slipher had determined that these galaxies are moving away from us at very high ...
... In Chap. 1, we learned of the history of astronomy culminating in the debate concerning the nature of the spiral nebulae. The correct answer turned out to be that the spiral nebulae are galaxies much like our own. Vesto Slipher had determined that these galaxies are moving away from us at very high ...
cont. - UNLV Physics
... Sun at a distance of 1 A.U. = 150 million km" • How is our solar system moving in the Milky Way galaxy?" – Stars in the Local Neighborhood move randomly relative to one another and orbit the center of the Milky Way in about 230 million years" ...
... Sun at a distance of 1 A.U. = 150 million km" • How is our solar system moving in the Milky Way galaxy?" – Stars in the Local Neighborhood move randomly relative to one another and orbit the center of the Milky Way in about 230 million years" ...
Physical cosmology
Physical cosmology is the study of the largest-scale structures and dynamics of the Universe and is concerned with fundamental questions about its origin, structure, evolution, and ultimate fate. For most of human history, it was a branch of metaphysics and religion. Cosmology as a science originated with the Copernican principle, which implies that celestial bodies obey identical physical laws to those on Earth, and Newtonian mechanics, which first allowed us to understand those physical laws.Physical cosmology, as it is now understood, began with the development in 1915 of Albert Einstein's general theory of relativity, followed by major observational discoveries in the 1920s: first, Edwin Hubble discovered that the universe contains a huge number of external galaxies beyond our own Milky Way; then, work by Vesto Slipher and others showed that the universe is expanding. These advances made it possible to speculate about the origin of the universe, and allowed the establishment of the Big Bang Theory, by Georges Lemaitre, as the leading cosmological model. A few researchers still advocate a handful of alternative cosmologies; however, most cosmologists agree that the Big Bang theory explains the observations better.Dramatic advances in observational cosmology since the 1990s, including the cosmic microwave background, distant supernovae and galaxy redshift surveys, have led to the development of a standard model of cosmology. This model requires the universe to contain large amounts of dark matter and dark energy whose nature is currently not well understood, but the model gives detailed predictions that are in excellent agreement with many diverse observations.Cosmology draws heavily on the work of many disparate areas of research in theoretical and applied physics. Areas relevant to cosmology include particle physics experiments and theory, theoretical and observational astrophysics, general relativity, quantum mechanics, and plasma physics.