Lecture 1
... Observational astronomers refer to any massive component too dim to be detected (stellar remnants such as white dwarfs, neutron stars, and black holes) as dark matter. A more stringent definition is any massive component of the universe which doesn’t emit, absorb, or scatter light at all. The usual ...
... Observational astronomers refer to any massive component too dim to be detected (stellar remnants such as white dwarfs, neutron stars, and black holes) as dark matter. A more stringent definition is any massive component of the universe which doesn’t emit, absorb, or scatter light at all. The usual ...
SYLLABUS Spring 2012 SCIE 3304, SECTION 001 ASTRONOMY
... as a star, measurement of different properties of stars, birth, evolution and death of stars, strange states of matter (neutron stars and black holes), Milky Way Galaxy, study of the Universe beyond our Galaxy, formation and evolution of galaxies. As we consider more distant objects, such as active ...
... as a star, measurement of different properties of stars, birth, evolution and death of stars, strange states of matter (neutron stars and black holes), Milky Way Galaxy, study of the Universe beyond our Galaxy, formation and evolution of galaxies. As we consider more distant objects, such as active ...
Chapter 12
... 4. The Oscillating theory states that the universe is closed and that there is enough matter in the universe to slow (because of gravity) and eventually stop the expansion of the universe. According to this theory, all matter will meet again in a Big Crunch. 5. Cosmic background radiation is the rad ...
... 4. The Oscillating theory states that the universe is closed and that there is enough matter in the universe to slow (because of gravity) and eventually stop the expansion of the universe. According to this theory, all matter will meet again in a Big Crunch. 5. Cosmic background radiation is the rad ...
How the universe began
... light appears redder than expected because its wavelength is stretched. • Hubble’s results proved that galaxies move away from us. • The galaxies further away have a bigger red shift because they are moving away faster than closer galaxies ...
... light appears redder than expected because its wavelength is stretched. • Hubble’s results proved that galaxies move away from us. • The galaxies further away have a bigger red shift because they are moving away faster than closer galaxies ...
DO NOT WRITE ON THIS PAPER Standard 1 Objective 1 Study
... 7. Hubble’s discovery that there was red shift in the spectra of galaxies led to an understanding that the universe is expanding. 8. Astronomers believe that cosmic background radiation formed shortly after the big bang. 9. The event which began the universe was the big bang. 10.The two elements tha ...
... 7. Hubble’s discovery that there was red shift in the spectra of galaxies led to an understanding that the universe is expanding. 8. Astronomers believe that cosmic background radiation formed shortly after the big bang. 9. The event which began the universe was the big bang. 10.The two elements tha ...
Galaxies and the Big Bang Theory
... A ___________ is a huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity The three different types of galaxies that exist in our universe are: ...
... A ___________ is a huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity The three different types of galaxies that exist in our universe are: ...
The Universe - staff.harrisonburg.k12.va
... which shows it is moving away from us. Therefore, it appears that the universe is expanding. The Big Bang could have caused this expansion. ...
... which shows it is moving away from us. Therefore, it appears that the universe is expanding. The Big Bang could have caused this expansion. ...
The Universe
... which shows it is moving away from us. Therefore, it appears that the universe is expanding. The Big Bang could have caused this expansion. ...
... which shows it is moving away from us. Therefore, it appears that the universe is expanding. The Big Bang could have caused this expansion. ...
homework assignment 1
... Due Monday, April 8, 2012 at 5 p.m., either electronically or on paper. 1. What is the difference between a star, a planet, a moon and an asteroid? ...
... Due Monday, April 8, 2012 at 5 p.m., either electronically or on paper. 1. What is the difference between a star, a planet, a moon and an asteroid? ...
What MSU Astronomers Will Do with the SOAR
... • Recently formed test details of “bottom-up” formation scenario • Evolution of cluster population sensitive probe of Dark Matter and Dark Energy • Best “fair sample” of matter content of Universe • Dark vs. normal matter ...
... • Recently formed test details of “bottom-up” formation scenario • Evolution of cluster population sensitive probe of Dark Matter and Dark Energy • Best “fair sample” of matter content of Universe • Dark vs. normal matter ...
an object that moves around another object in space
... makes as it revolves around a second object ...
... makes as it revolves around a second object ...
Bellringer - Madison County Schools
... • 13.75 billion years ago, the part of the universe we see now was no larger than the period at the end of this sentence. ...
... • 13.75 billion years ago, the part of the universe we see now was no larger than the period at the end of this sentence. ...
review
... Good evidence for the big bang comes from the cosmic microwave background. This is photons emitted when radiation ‘decoupled’ from matter at the time neutral atoms formed. At that time, the temperature of the universe was about 3000K and the photons had a blackbody spectrum appropriate to that temp ...
... Good evidence for the big bang comes from the cosmic microwave background. This is photons emitted when radiation ‘decoupled’ from matter at the time neutral atoms formed. At that time, the temperature of the universe was about 3000K and the photons had a blackbody spectrum appropriate to that temp ...
Describe essential ideas about the composition and structure of the
... Identify and articulate space program efforts to investigate possibilities of living in space and on other planets. Explain essential ideas about the composition and structure of the universe. Compare the basic structures of the universe (e.g., galaxy types, nova, black holes, and neutron stars) ...
... Identify and articulate space program efforts to investigate possibilities of living in space and on other planets. Explain essential ideas about the composition and structure of the universe. Compare the basic structures of the universe (e.g., galaxy types, nova, black holes, and neutron stars) ...
Chapter 7 Review Answers
... 3. Astronomers use astronomical units (AU) and light-years (ly) to measure distances between celestial objects. AU – distances in our solar system ly – distances outside our solar system 4. (a) A galaxy is a collection of hundreds of billions of stars held together by gravity. (b) We live in the Mil ...
... 3. Astronomers use astronomical units (AU) and light-years (ly) to measure distances between celestial objects. AU – distances in our solar system ly – distances outside our solar system 4. (a) A galaxy is a collection of hundreds of billions of stars held together by gravity. (b) We live in the Mil ...
Is space created and destroyed? 9 Feb 16 Feb 2012
... è Type I supernovae do not have hydrogen in the spectrum. Type II supernovae do have hydrogen. è A Type II supernova is a massive star that explodes when it runs out of fuel and pressure is insufficient to counter gravity. The hydrogen is from the outermost part of the star. è A Type I supernova is ...
... è Type I supernovae do not have hydrogen in the spectrum. Type II supernovae do have hydrogen. è A Type II supernova is a massive star that explodes when it runs out of fuel and pressure is insufficient to counter gravity. The hydrogen is from the outermost part of the star. è A Type I supernova is ...
123mt13a
... 21. “it is manifest to any observer that the Earth occupies the middle place in the cosmos and that all weights move towards it” Who wrote this and what is the significance of this statement in terms of defining a cultural truth? LOTS OF MERCY POINTS HERE ...
... 21. “it is manifest to any observer that the Earth occupies the middle place in the cosmos and that all weights move towards it” Who wrote this and what is the significance of this statement in terms of defining a cultural truth? LOTS OF MERCY POINTS HERE ...
Big Bang
... • 10-43 seconds after Big Bang • Before Planck Time, the universe was concentrated in a single point • At Planck Time, the universe was 1032 Kelvin and it had the size of 10-33 cm. ...
... • 10-43 seconds after Big Bang • Before Planck Time, the universe was concentrated in a single point • At Planck Time, the universe was 1032 Kelvin and it had the size of 10-33 cm. ...
understanding-the
... moving away from each other. b. The red shift indicates that distant galaxies are moving towards each other. c. The blue shift indicates that distant galaxies are moving away from each other. d. The blue shift indicates that distant galaxies are moving towards each other. ...
... moving away from each other. b. The red shift indicates that distant galaxies are moving towards each other. c. The blue shift indicates that distant galaxies are moving away from each other. d. The blue shift indicates that distant galaxies are moving towards each other. ...
PARTS OF THE UNIVERSE
... v Parallax: apparent shift in the position of an object when view from two different locations. v Parallax Example v Can be used to measure the distance of stars from Earth that are relatively close. v Proxima Centauri: closest star to earth v (4.3 light years away – 40 trillion km) ...
... v Parallax: apparent shift in the position of an object when view from two different locations. v Parallax Example v Can be used to measure the distance of stars from Earth that are relatively close. v Proxima Centauri: closest star to earth v (4.3 light years away – 40 trillion km) ...
cosmological horizon
... How do galaxies form, and how do they change over time? Why do we see so many different kinds of galaxies? Are their differences a result of ‘nature’ or ‘nurture’? How do the properties of galaxies depend on their environment? ...
... How do galaxies form, and how do they change over time? Why do we see so many different kinds of galaxies? Are their differences a result of ‘nature’ or ‘nurture’? How do the properties of galaxies depend on their environment? ...
Probing the Edge of the Solar System: Formation of
... •At t=10-6 second, the temperature in the universe dropped to the threshold temperature of 1013 K, at which the photons can not produce proton and anti-proton pairs (and neutron and antineutron pairs) •At about t = 1 second, temperature fell below 6 X 109 K, electrons and positions annihilated to fo ...
... •At t=10-6 second, the temperature in the universe dropped to the threshold temperature of 1013 K, at which the photons can not produce proton and anti-proton pairs (and neutron and antineutron pairs) •At about t = 1 second, temperature fell below 6 X 109 K, electrons and positions annihilated to fo ...
Olber`s Paradox
... So if the universe is infinitely big then the sky should be bright But the sky is dark So the universe is not infinitely big So it should have collapsed ...
... So if the universe is infinitely big then the sky should be bright But the sky is dark So the universe is not infinitely big So it should have collapsed ...
doc
... Final Jeopardy: The Origin of the Elements -----------------------------------------An element, and the process or object which ultimately created it. ...
... Final Jeopardy: The Origin of the Elements -----------------------------------------An element, and the process or object which ultimately created it. ...
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.