Chapter 9 / Adobe Acrobat Document
... to those aboard the shuttle—seven astronauts died during the Challenger launch disaster and another seven astronauts died when Columbia broke up on re-entry. 28. Hubble and Humason’s distance-redshift relationship: the universe’s expansion has been confirmed by observations at very large distances a ...
... to those aboard the shuttle—seven astronauts died during the Challenger launch disaster and another seven astronauts died when Columbia broke up on re-entry. 28. Hubble and Humason’s distance-redshift relationship: the universe’s expansion has been confirmed by observations at very large distances a ...
Document
... • Sound of a fire truck siren - pitch of the siren is higher as the fire truck moves towards you, and lower as it moves away from you • Visible wavelengths emitted by objects moving away from us are shifted towards the red part of the visible spectrum • The faster they move away from us, the more th ...
... • Sound of a fire truck siren - pitch of the siren is higher as the fire truck moves towards you, and lower as it moves away from you • Visible wavelengths emitted by objects moving away from us are shifted towards the red part of the visible spectrum • The faster they move away from us, the more th ...
ISP 205: Visions of the Universe
... • How did we come to be? — The matter in our bodies came from the Big Bang, which produced hydrogen and helium. — All other elements were constructed from H and He in stars and then recycled into new star systems, including our solar system. ...
... • How did we come to be? — The matter in our bodies came from the Big Bang, which produced hydrogen and helium. — All other elements were constructed from H and He in stars and then recycled into new star systems, including our solar system. ...
What kind of stuff
... • It contains billions of galaxies, each one tens of kpc in size. • The size of the visible universe is of order Giga (Giga=billion) pc, i.e. millions of times that of the Milky Way ...
... • It contains billions of galaxies, each one tens of kpc in size. • The size of the visible universe is of order Giga (Giga=billion) pc, i.e. millions of times that of the Milky Way ...
Lecture2 - UCSB Physics
... • It contains billions of galaxies, each one tens of kpc in size. • The size of the visible universe is of order Giga (Giga=billion) pc, i.e. millions of times that of the Milky Way ...
... • It contains billions of galaxies, each one tens of kpc in size. • The size of the visible universe is of order Giga (Giga=billion) pc, i.e. millions of times that of the Milky Way ...
Document
... • Sound of a fire truck siren - pitch of the siren is higher as the fire truck moves towards you, and lower as it moves away from you • Visible wavelengths emitted by objects moving away from us are shifted towards the red part of the visible spectrum • The faster they move away from us, the more th ...
... • Sound of a fire truck siren - pitch of the siren is higher as the fire truck moves towards you, and lower as it moves away from you • Visible wavelengths emitted by objects moving away from us are shifted towards the red part of the visible spectrum • The faster they move away from us, the more th ...
THE COSMOLOGICAL CONSTANT PROBLEM: HOW DOES THE
... Ø Einstein added an extra ingredient in 1917, the Cosmological Constant (CC) Λ ...
... Ø Einstein added an extra ingredient in 1917, the Cosmological Constant (CC) Λ ...
Home | STA Notes
... started at time zero with a "big bang", when all the matter/energy in the universe was concentrated at a single point. Since then the galaxies etc have been moving further and further apart, rather like raisins in dough, which is expanding ("rising") in an oven ..... ...
... started at time zero with a "big bang", when all the matter/energy in the universe was concentrated at a single point. Since then the galaxies etc have been moving further and further apart, rather like raisins in dough, which is expanding ("rising") in an oven ..... ...
AST1001.ch1
... • How did we come to be? — The matter in our bodies came from the Big Bang, which produced hydrogen and helium. — All other elements were constructed from H and He in stars and then recycled into new star systems, including our solar system. ...
... • How did we come to be? — The matter in our bodies came from the Big Bang, which produced hydrogen and helium. — All other elements were constructed from H and He in stars and then recycled into new star systems, including our solar system. ...
Autumn semester 2013-14 - The University of Sheffield
... Relic neutrinos from the Big Bang do form a small component of the dark matter. In addition neutrinos are important in searches for neutralino WIMP dark matter, because they may be produced when WIMPs gravitationally collect inside massive bodies such as the Sun or Earth and annihilate with each oth ...
... Relic neutrinos from the Big Bang do form a small component of the dark matter. In addition neutrinos are important in searches for neutralino WIMP dark matter, because they may be produced when WIMPs gravitationally collect inside massive bodies such as the Sun or Earth and annihilate with each oth ...
ppt
... amount of “normal” matter to less than that needed for dark matter halos. So, this is something new… non-baryonic matter. I.e., matter not based on protons and neutrons. 80-90% of matter in universe is non-baryonic dark matter!! ...
... amount of “normal” matter to less than that needed for dark matter halos. So, this is something new… non-baryonic matter. I.e., matter not based on protons and neutrons. 80-90% of matter in universe is non-baryonic dark matter!! ...
Word
... Expansion of the Universe Evidence for the expansion of the Universe from a hot dense initial state comes from: 1. observations of the cosmic microwave background radiation, showing that the Universe has cooled as it expanded, 2. observations of the speed of recession of galaxies, from red-shifts of ...
... Expansion of the Universe Evidence for the expansion of the Universe from a hot dense initial state comes from: 1. observations of the cosmic microwave background radiation, showing that the Universe has cooled as it expanded, 2. observations of the speed of recession of galaxies, from red-shifts of ...
Hubblecast 70: Peering around cosmic corners Visual notes 00:00
... As a result, this massive object, or rather the curved space around it produced by its gravity, acts like a lens; a gravitational lens that deflects light into our telescopes that would have otherwise never made it there. ...
... As a result, this massive object, or rather the curved space around it produced by its gravity, acts like a lens; a gravitational lens that deflects light into our telescopes that would have otherwise never made it there. ...
Word version of Episode 705
... galaxies is increasing. Hubble’s interpretation was slightly different: he took the results to mean that galaxies were receding from each other through space. Following Hubble’s explanation, we can write: v Hd ...
... galaxies is increasing. Hubble’s interpretation was slightly different: he took the results to mean that galaxies were receding from each other through space. Following Hubble’s explanation, we can write: v Hd ...
Episode 705: Cosmology - Teaching Advanced Physics
... galaxies is increasing. Hubble’s interpretation was slightly different: he took the results to mean that galaxies were receding from each other through space. Following Hubble’s explanation, we can write: v Hd ...
... galaxies is increasing. Hubble’s interpretation was slightly different: he took the results to mean that galaxies were receding from each other through space. Following Hubble’s explanation, we can write: v Hd ...
PowerPoint file - Adin Community Bible Church
... “The complete birth of a star has never been observed. The principles of physics demand some special conditions for star formation and also for a long time period. A cloud of hydrogen gas must be compressed to a sufficiently small size so that gravity dominates. continued ...
... “The complete birth of a star has never been observed. The principles of physics demand some special conditions for star formation and also for a long time period. A cloud of hydrogen gas must be compressed to a sufficiently small size so that gravity dominates. continued ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... • The highest score in the class currently is a 97% • The lowest score in the class currently is a 33% • (Assuming their test grades remain the same for the rest of the class and actually calculating their HW and PRS scores) ...
... • The highest score in the class currently is a 97% • The lowest score in the class currently is a 33% • (Assuming their test grades remain the same for the rest of the class and actually calculating their HW and PRS scores) ...
Lecture 12
... The relationship between redshift and distance is linear for low values of z, but becomes rather complex when we look at very distant objects (very far back in time). As the Universe expands the value of H0 changes as the geometry of the Universe changes. Partly this is a ‘standard’ result from appl ...
... The relationship between redshift and distance is linear for low values of z, but becomes rather complex when we look at very distant objects (very far back in time). As the Universe expands the value of H0 changes as the geometry of the Universe changes. Partly this is a ‘standard’ result from appl ...
26.5 The Expanding Universe
... time could have led to the present universe of stars and galaxies. It offers the best current scientific explanation of the expansion of the observable universe. Variations of the theory continue to be proposed and are being tested with new observations. ...
... time could have led to the present universe of stars and galaxies. It offers the best current scientific explanation of the expansion of the observable universe. Variations of the theory continue to be proposed and are being tested with new observations. ...
press release - University of Michigan
... pieces composed for the 11 May event. Among the performers will be pianist / composer Gabriel Zucker, who has inspired Spectrum audiences with several of his own compositions as well as Charles Ives’ daunting “Concord Sonata”. In the gallery space at Spectrum, artist Gwen Tessier will exhibit a scul ...
... pieces composed for the 11 May event. Among the performers will be pianist / composer Gabriel Zucker, who has inspired Spectrum audiences with several of his own compositions as well as Charles Ives’ daunting “Concord Sonata”. In the gallery space at Spectrum, artist Gwen Tessier will exhibit a scul ...
department of physics - Bishopston Comprehensive School Moodle
... Now we’ve just discussed the Doppler effect using sound waves, but the Doppler effect applies to ALL waves not just sound waves. So for example if we looked at stars from a distant galaxy and the light wave received on earth was slightly stretched, then that would mean that the galaxy must be moving ...
... Now we’ve just discussed the Doppler effect using sound waves, but the Doppler effect applies to ALL waves not just sound waves. So for example if we looked at stars from a distant galaxy and the light wave received on earth was slightly stretched, then that would mean that the galaxy must be moving ...
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 ...
IS AN ALTERNATE COSMOLOGY BECOMING NECESSARY?
... shining stars in the Milky Way, there are 24 dark stars for each bright one, but this number is likely not very accurate. What these results offer What these results from direct evidence offer is a far different picture from current theories and models. These results and other direct evidence indica ...
... shining stars in the Milky Way, there are 24 dark stars for each bright one, but this number is likely not very accurate. What these results offer What these results from direct evidence offer is a far different picture from current theories and models. These results and other direct evidence indica ...
Cosmology and Particle Physics
... called a Doppler shift, it is notspace itself is expanding. There is no center of expansion in the universe. All observers see themselves as stationary; the other objects in space appear to be moving away from them. Hubble was directly responsible for discovering that the universe was much larger t ...
... called a Doppler shift, it is notspace itself is expanding. There is no center of expansion in the universe. All observers see themselves as stationary; the other objects in space appear to be moving away from them. Hubble was directly responsible for discovering that the universe was much larger t ...
Big Bang
The Big Bang theory is the prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution. The model accounts for the fact that the universe expanded from a very high density and high temperature state, and offers a comprehensive explanation for a broad range of observed phenomena, including the abundance of light elements, the cosmic microwave background, large scale structure, and Hubble's Law. If the known laws of physics are extrapolated beyond where they are valid, there is a singularity. Modern measurements place this moment at approximately 13.8 billion years ago, which is thus considered the age of the universe. After the initial expansion, the universe cooled sufficiently to allow the formation of subatomic particles, and later simple atoms. Giant clouds of these primordial elements later coalesced through gravity to form stars and galaxies.Since Georges Lemaître first noted, in 1927, that an expanding universe might be traced back in time to an originating single point, scientists have built on his idea of cosmic expansion. While the scientific community was once divided between supporters of two different expanding universe theories, the Big Bang and the Steady State theory, accumulated empirical evidence provides strong support for the former. In 1929, from analysis of galactic redshifts, Edwin Hubble concluded that galaxies are drifting apart, important observational evidence consistent with the hypothesis of an expanding universe. In 1965, the cosmic microwave background radiation was discovered, which was crucial evidence in favor of the Big Bang model, since that theory predicted the existence of background radiation throughout the universe before it was discovered. More recently, measurements of the redshifts of supernovae indicate that the expansion of the universe is accelerating, an observation attributed to dark energy's existence. The known physical laws of nature can be used to calculate the characteristics of the universe in detail back in time to an initial state of extreme density and temperature.