2014 Joseph E. Pesce, Ph.D. 1 Astro 113 Final Exam Review 1. What
... 2. What are the basic stages in the Sun's history? 3. What are the various astronomical distance measures? 4. Suppose the Hubble constant, H = 60 (km/sec)/Mpc. A Certain galaxy is known to ...
... 2. What are the basic stages in the Sun's history? 3. What are the various astronomical distance measures? 4. Suppose the Hubble constant, H = 60 (km/sec)/Mpc. A Certain galaxy is known to ...
Homework 1 - Course Pages of Physics Department
... interpret the expansion of the universe as an actual motion of galaxies instead of an expansion of space itself. Consider thus a spherical group of galaxies in otherwise empty space. At a sufficiently large scale you can treat this as a homogeneous cloud (the galaxies are the cloud particles). Let t ...
... interpret the expansion of the universe as an actual motion of galaxies instead of an expansion of space itself. Consider thus a spherical group of galaxies in otherwise empty space. At a sufficiently large scale you can treat this as a homogeneous cloud (the galaxies are the cloud particles). Let t ...
10.1 PPT
... • Early astronomers were able to observe outer space by using the best instruments of the time, early telescopes. • With the development of more powerful telescopes in the 1920’s, suddenly more celestial bodies were discovered. • Celestial bodies is a general term for all the objects in the sky, in ...
... • Early astronomers were able to observe outer space by using the best instruments of the time, early telescopes. • With the development of more powerful telescopes in the 1920’s, suddenly more celestial bodies were discovered. • Celestial bodies is a general term for all the objects in the sky, in ...
Word - Sam Davyson
... be more than 15 Gyrs old. Which is an utter nonsense. It is thought that dark matter could be the missing piece that would solve this conflict. Obviously its` presence would change the rate of recession of galaxies due to gravity. Cosmological Red-Shift As light travels from one galaxy to another, t ...
... be more than 15 Gyrs old. Which is an utter nonsense. It is thought that dark matter could be the missing piece that would solve this conflict. Obviously its` presence would change the rate of recession of galaxies due to gravity. Cosmological Red-Shift As light travels from one galaxy to another, t ...
Historical overview
... whose effective temperature drops as the universe expands. George Gamow predicted in 1953 that at present this radiation that fills the whole Universe has reached a temperature of 7K (see also work of Ralph Alpher and Robert Herman) ...
... whose effective temperature drops as the universe expands. George Gamow predicted in 1953 that at present this radiation that fills the whole Universe has reached a temperature of 7K (see also work of Ralph Alpher and Robert Herman) ...
CK12- Study of Space by the EM Spectrum Student Name: ______
... 3. What can we learn about stars from these absorption lines? 4. Where was helium first discovered? 5. What is redshift? 6. What does it mean that stars & galaxies are red shifted? 7. What type of shift do the majority of objects in space have? 8. What is Hubble’s law? 9. What object does the articl ...
... 3. What can we learn about stars from these absorption lines? 4. Where was helium first discovered? 5. What is redshift? 6. What does it mean that stars & galaxies are red shifted? 7. What type of shift do the majority of objects in space have? 8. What is Hubble’s law? 9. What object does the articl ...
Document
... from the observer is increased in wavelength, or shifted to the red end of the spectrum. In general, whether or not the radiation is within the visible spectrum, "redder" means an increase in wavelength – equivalent to a lower frequency and a lower photon energy, in accordance with, respectively, th ...
... from the observer is increased in wavelength, or shifted to the red end of the spectrum. In general, whether or not the radiation is within the visible spectrum, "redder" means an increase in wavelength – equivalent to a lower frequency and a lower photon energy, in accordance with, respectively, th ...
Lecture 2
... Finally we look at the application of these ideas on the largest scales of all. If we consider only the forces which we know about from laboratory physics it seems clear that gravity must dominate on very large scales and therefore that the universe should be in a state of collapse. We can try to ar ...
... Finally we look at the application of these ideas on the largest scales of all. If we consider only the forces which we know about from laboratory physics it seems clear that gravity must dominate on very large scales and therefore that the universe should be in a state of collapse. We can try to ar ...
The Runaway Universe - Astronomy & Astrophysics Group
... “I have observed the nature and the material of the Milky Way. With the aid of the telescope this has been scrutinized so directly and with such ocular certainty that all the disputes which have vexed philosophers through so many ages have been resolved, and we are at last freed from wordy debates a ...
... “I have observed the nature and the material of the Milky Way. With the aid of the telescope this has been scrutinized so directly and with such ocular certainty that all the disputes which have vexed philosophers through so many ages have been resolved, and we are at last freed from wordy debates a ...
The Big Bang Theory - Red Hook Central Schools
... expanding: an infinitesimally small balloon expanding to the size of our current universe ...
... expanding: an infinitesimally small balloon expanding to the size of our current universe ...
PHYSICS 113 Assignment #9 SOLUTIONS Chapter 17 13. Starting
... the nearest planets (and the Sun and the Moon) can be measured using radar ranging. This allows us to measure distances up to several A.U.’s. (ii) The distances to the nearest stars (up to 100 parsecs) can be measured using stellar parallax (obviously this first requires an accurate measurement of t ...
... the nearest planets (and the Sun and the Moon) can be measured using radar ranging. This allows us to measure distances up to several A.U.’s. (ii) The distances to the nearest stars (up to 100 parsecs) can be measured using stellar parallax (obviously this first requires an accurate measurement of t ...
Universal redshift, the Hubble constant The cosmic background
... What is interesting results on the planet motion and spectrum were published in the Astrophysical Journal and are still available. The results relevant to cosmology were informed in local bulletin only. ...
... What is interesting results on the planet motion and spectrum were published in the Astrophysical Journal and are still available. The results relevant to cosmology were informed in local bulletin only. ...
The Hubble Space Telescope
... Every star is balanced by the inward pull of gravity and the outward pressure of heat by nuclear fusion. Once a star runs out of fuel the pressure needed for balance is gone. Gravity causes the star to cave in and BOOM an explosion destroying the star and everything around it. ...
... Every star is balanced by the inward pull of gravity and the outward pressure of heat by nuclear fusion. Once a star runs out of fuel the pressure needed for balance is gone. Gravity causes the star to cave in and BOOM an explosion destroying the star and everything around it. ...
Document
... • The universe has grown from the size of an atom to larger than the size a grapefruit • E=mc2 • energy froze into matter according to Albert Einstein’s equation. • This basically says that like snowflakes freezing, energy forms matter into clumps that today we call protons, neutrons and electrons. ...
... • The universe has grown from the size of an atom to larger than the size a grapefruit • E=mc2 • energy froze into matter according to Albert Einstein’s equation. • This basically says that like snowflakes freezing, energy forms matter into clumps that today we call protons, neutrons and electrons. ...
The Big Bang Theory
... 6. Speed of light and stellar distances • The speed of light is a universal constant of 300,000 km/s ...
... 6. Speed of light and stellar distances • The speed of light is a universal constant of 300,000 km/s ...
The Big Bang Theory
... 6. Speed of light and stellar distances • The speed of light is a universal constant of 300,000 km/s2 ...
... 6. Speed of light and stellar distances • The speed of light is a universal constant of 300,000 km/s2 ...
13800000000 Years Ago The First Sky
... What do they tell us ? Age of the Universe = 13800000000 Years Size of our Universe = 13800000000 Light Years = 100000000000000000000000 kilo-meters !!! ...
... What do they tell us ? Age of the Universe = 13800000000 Years Size of our Universe = 13800000000 Light Years = 100000000000000000000000 kilo-meters !!! ...
PRACTICE MINI-EXAM
... 6) A newly formed zircon crystal contains 1000 uranium-238 atoms. How many uranium-238 atoms will be left after two half-lives? ...
... 6) A newly formed zircon crystal contains 1000 uranium-238 atoms. How many uranium-238 atoms will be left after two half-lives? ...
Class 28, 27 July
... • Nuclei try to collapse (gravity), photons push back (pressure) • This leads to OSCILLATIONS! • Size of oscillations measures geometry of universe (know physical size, angle, so can measure geometry) ...
... • Nuclei try to collapse (gravity), photons push back (pressure) • This leads to OSCILLATIONS! • Size of oscillations measures geometry of universe (know physical size, angle, so can measure geometry) ...
18-3 constellations RG
... 13. When a star or galaxy moves quickly away from an observer, the light it emits appears redder than it usually would, this effect is called _____________________________________________. 14. When a star or galaxy moves quickly toward an observer, the light it emits appears bluer than it usually w ...
... 13. When a star or galaxy moves quickly away from an observer, the light it emits appears redder than it usually would, this effect is called _____________________________________________. 14. When a star or galaxy moves quickly toward an observer, the light it emits appears bluer than it usually w ...
The Big Bang Theory
... 6. Speed of light and stellar distances • The speed of light is a universal constant of 300,000 km/s2 • We observe stars millions/billions of light-years away • A light-year is the distance that light travels in 1 year – the light we see today from a star 500 light years away is 500 years old • The ...
... 6. Speed of light and stellar distances • The speed of light is a universal constant of 300,000 km/s2 • We observe stars millions/billions of light-years away • A light-year is the distance that light travels in 1 year – the light we see today from a star 500 light years away is 500 years old • The ...
