powerpoint - Physics @ IUPUI
... • By the 1950s it was pretty well established that our universe was expanding. • But what did that mean? • Was it possible everything was once all together (just like our conga line)? • However, what this meant for our universe in the past was not known yet. • There were many theories around. ...
... • By the 1950s it was pretty well established that our universe was expanding. • But what did that mean? • Was it possible everything was once all together (just like our conga line)? • However, what this meant for our universe in the past was not known yet. • There were many theories around. ...
Lecture24
... The CMB was already visible in the data taken by Dunham and Adams of the properties of CN in the interstellar medium …back in 1937 The saw that CN was excited as if it was immersed in a thermal bath of radiation of temperature ...
... The CMB was already visible in the data taken by Dunham and Adams of the properties of CN in the interstellar medium …back in 1937 The saw that CN was excited as if it was immersed in a thermal bath of radiation of temperature ...
Distant galaxies and quasars The ages of things Light
... However, the expansion of the universe has not been constant.. see later ...
... However, the expansion of the universe has not been constant.. see later ...
SYLLABUS Spring 2012 SCIE 3304, SECTION 001 ASTRONOMY
... spectrum and demonstrate the need of observing outside the visible range and outside the Earth’s atmosphere. Discuss the properties of the other planets and their moons in our solar system in comparison to the planet Earth. List and describe the layers of the Sun’s interior and atmosphere, sunspots ...
... spectrum and demonstrate the need of observing outside the visible range and outside the Earth’s atmosphere. Discuss the properties of the other planets and their moons in our solar system in comparison to the planet Earth. List and describe the layers of the Sun’s interior and atmosphere, sunspots ...
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) ...
Bang To Sol - Transcript
... much pure energy all of a sudden, that space itself couldn’t stand it…so from just about nothing, space zoomed faster than thought to enormous size… good thing too because gravity was about to squeeze that baby universe back into the nothingness it came from. That first zoom happened a whole lot fas ...
... much pure energy all of a sudden, that space itself couldn’t stand it…so from just about nothing, space zoomed faster than thought to enormous size… good thing too because gravity was about to squeeze that baby universe back into the nothingness it came from. That first zoom happened a whole lot fas ...
Is space created and destroyed? 9 Feb 16 Feb 2012
... Because wavelengths expand with the universe, the wavelength of the black-body radiation increases with time and the temperature decreases. The temperature of the radiation changes as a-1 . Q: When a very distant gamma-ray burster sent its light out z = 8, was the radiation hot enough to melt ice? ...
... Because wavelengths expand with the universe, the wavelength of the black-body radiation increases with time and the temperature decreases. The temperature of the radiation changes as a-1 . Q: When a very distant gamma-ray burster sent its light out z = 8, was the radiation hot enough to melt ice? ...
GE: Friday morning *Cosmology and general relativity: the evolution
... of an evolution of the universe from a hot big bang to the present day has offered a series of unifications of ever more fundamental physics with cosmological models and predictions; ...
... of an evolution of the universe from a hot big bang to the present day has offered a series of unifications of ever more fundamental physics with cosmological models and predictions; ...
However the Big Bang theory had some competition…
... We call the constant that relates the distance to the speed of a Galaxy Hubble's constant! Velocity = Hubble's Constant x Distance Distance from us, (m) ...
... We call the constant that relates the distance to the speed of a Galaxy Hubble's constant! Velocity = Hubble's Constant x Distance Distance from us, (m) ...
CDFS Lecture
... The search for God; can science help • The Big Bang; - the Universe created with humans in mind? • Where is God; an analogy from science? ...
... The search for God; can science help • The Big Bang; - the Universe created with humans in mind? • Where is God; an analogy from science? ...
The Milky Way, Schroedinger`s Cat, and You
... telescopes that are based in space A new method called “Adaptive Optics” allows us to sharpen the vision of telescopes that are on the ground, by correcting for the blurring caused by the Earth’s atmosphere ...
... telescopes that are based in space A new method called “Adaptive Optics” allows us to sharpen the vision of telescopes that are on the ground, by correcting for the blurring caused by the Earth’s atmosphere ...
Measuring Distance in our Universe. Due Tue 1 Dec 2009 Imagine
... Centauri, it would take 4.2 years traveling at the speed of light. Distances on earth are often measured in kilometers but distances to the stars are so large that kilometers aren’t very practical units. Astronomers use the unit called a light-year to measure distances between stars and across the u ...
... Centauri, it would take 4.2 years traveling at the speed of light. Distances on earth are often measured in kilometers but distances to the stars are so large that kilometers aren’t very practical units. Astronomers use the unit called a light-year to measure distances between stars and across the u ...
An Introduction - Solar Physics and Space Weather
... 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 form low energy gammaray photons that can not reverse the process •As a result, matter and anti-matter content decreased, and radi ...
... 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 form low energy gammaray photons that can not reverse the process •As a result, matter and anti-matter content decreased, and radi ...
The Hubble Deep Field (HDF)
... The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. They pointed Hubble at a fairly empty region of space, one where very few stars are seen. The image was assembled from 342 separate exp ...
... The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. They pointed Hubble at a fairly empty region of space, one where very few stars are seen. The image was assembled from 342 separate exp ...
The Hubble Deep Field (HDF)
... The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. They pointed Hubble at a fairly empty region of space, one where very few stars are seen. The image was assembled from 342 separate exp ...
... The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. They pointed Hubble at a fairly empty region of space, one where very few stars are seen. The image was assembled from 342 separate exp ...
origins of the Universe
... in the early 1900’s astronomers started to find evidence that pointed to a Big Bang. • In 1922, astronomer Edwin Hubble observed that the universe was expanding. The most distant galaxies he could see through his telescope were moving away at about 40 000 km per second. • This observation led to wha ...
... in the early 1900’s astronomers started to find evidence that pointed to a Big Bang. • In 1922, astronomer Edwin Hubble observed that the universe was expanding. The most distant galaxies he could see through his telescope were moving away at about 40 000 km per second. • This observation led to wha ...
Post-class version
... The geometry of empty space is determined by the average density, and vice versa. If space is flat, rather than curved like the surface of a sphere, the density equals the critical value. The consequence is that the universe will never stop expanding, but the expansion will continually slow down. Bu ...
... The geometry of empty space is determined by the average density, and vice versa. If space is flat, rather than curved like the surface of a sphere, the density equals the critical value. The consequence is that the universe will never stop expanding, but the expansion will continually slow down. Bu ...
Time From the Perspective of a Particle Physicist
... and it has been ever since it was created in the Big Bang about 13 billion years ago • Understanding how the expansion rate changes with time tells us about the inherent mass and energy which makes up the Universe, a more precise values for its age, and what its fate will be • Current data is perple ...
... and it has been ever since it was created in the Big Bang about 13 billion years ago • Understanding how the expansion rate changes with time tells us about the inherent mass and energy which makes up the Universe, a more precise values for its age, and what its fate will be • Current data is perple ...
Document
... Andromeda, and determined their distance. Andromeda contains a spiral-shaped galaxy that, at a distance of 2.2 million light-years, is the farthest object visible to the naked eye. He calculated that Andromeda must be at least 10 times farther away than the farthest stars in the Milky Way. The Andro ...
... Andromeda, and determined their distance. Andromeda contains a spiral-shaped galaxy that, at a distance of 2.2 million light-years, is the farthest object visible to the naked eye. He calculated that Andromeda must be at least 10 times farther away than the farthest stars in the Milky Way. The Andro ...
Objectives: 1.
... • Edwin Hubble: noticed a red shift in the light of all galaxies relative to the milky way galaxy. • Hubble Law: The amount of red shift (or Velocity of a galaxy) is proportional to the distance of the galaxy from the milky way. • The further away a galaxy is the greater the red shift, and the faste ...
... • Edwin Hubble: noticed a red shift in the light of all galaxies relative to the milky way galaxy. • Hubble Law: The amount of red shift (or Velocity of a galaxy) is proportional to the distance of the galaxy from the milky way. • The further away a galaxy is the greater the red shift, and the faste ...
Astronomy Quiz #1 Answers
... 8. Some galaxies are thought to produce many more new stars than others. What characteristics do galaxies with a high rate of production of stars have in common? (2 – MC) -they have large amounts of dust and gas 9. Explain why looking at a star in the night sky is like looking back in time. (2 – COM ...
... 8. Some galaxies are thought to produce many more new stars than others. What characteristics do galaxies with a high rate of production of stars have in common? (2 – MC) -they have large amounts of dust and gas 9. Explain why looking at a star in the night sky is like looking back in time. (2 – COM ...
