Mass Outflow in the Seyfert 1 Galaxy NGC 4151
... How can we determine the curvature? • Count galaxies – if the number increases proportional to r3, Universe is “flat” – if the number increases more quickly with radius, the Universe is “open”, if more slowly, it’s closed Also: both open and flat cases – Universe is infinite; closed case – Universe ...
... How can we determine the curvature? • Count galaxies – if the number increases proportional to r3, Universe is “flat” – if the number increases more quickly with radius, the Universe is “open”, if more slowly, it’s closed Also: both open and flat cases – Universe is infinite; closed case – Universe ...
Lecture 1
... Perfect Cosmological Principle in which the global properties of the universe, such as the Hubble constant H0 and the mean density ρ0 , remain constant with time. If H0 is constant with time, r(t) ∝ exp H0 t . In order to have a constant density of matter within a sphere that is growing in volume, m ...
... Perfect Cosmological Principle in which the global properties of the universe, such as the Hubble constant H0 and the mean density ρ0 , remain constant with time. If H0 is constant with time, r(t) ∝ exp H0 t . In order to have a constant density of matter within a sphere that is growing in volume, m ...
Galaxies and the Universe
... The Universe • The sum of all space, matter, and energy that exists, has existed, or will exist ...
... The Universe • The sum of all space, matter, and energy that exists, has existed, or will exist ...
Document
... has been more and more distance between clusters of galaxies. Galaxies moving farther away from each other is known as the red shift. As light from distant galaxies approach earth there is an increase of space between earth and the galaxy, which makes wavelengths being stretched. ...
... has been more and more distance between clusters of galaxies. Galaxies moving farther away from each other is known as the red shift. As light from distant galaxies approach earth there is an increase of space between earth and the galaxy, which makes wavelengths being stretched. ...
Quiz Maker - Geneva 304
... About how many galaxies can Astronomers see? 6. It has been realized that in the last 50 years that the Universe is __________. We have also discovered that the Universe contains truly amazing objects like __________ , __________ , __________ , __________ , and exploding and colliding __________ . A ...
... About how many galaxies can Astronomers see? 6. It has been realized that in the last 50 years that the Universe is __________. We have also discovered that the Universe contains truly amazing objects like __________ , __________ , __________ , __________ , and exploding and colliding __________ . A ...
Our Place In the Universe
... A star and all the material that orbits it, including its planets and moons ...
... A star and all the material that orbits it, including its planets and moons ...
Chapter 7 Review Answers
... (b) A large red shift means that the light source (star) and observer (us) are moving away from each other at very high speeds. ...
... (b) A large red shift means that the light source (star) and observer (us) are moving away from each other at very high speeds. ...
Galaxies and the Universe
... The Universe • The sum of all space, matter, and energy that exists, has existed, or will exist ...
... The Universe • The sum of all space, matter, and energy that exists, has existed, or will exist ...
Historical overview
... 1913: Ejnar Hertzsprung uses Cepheids to measure distance to the Small Magellanic Cloud as 37,000 light years (current value 199,000 ly) 1923: Edwin Hubble discovers variable star in Andromeda ...
... 1913: Ejnar Hertzsprung uses Cepheids to measure distance to the Small Magellanic Cloud as 37,000 light years (current value 199,000 ly) 1923: Edwin Hubble discovers variable star in Andromeda ...
Origins of the Universe
... • Scientists believe about 14 billion years ago, the universe was unimaginably compact, small, and dense • Universe began its expansion after a giant explosion, coined the Big Bang • It began expanding with unimaginable force from a hot, dense state to its present state over a loooong time (~ 13 750 ...
... • Scientists believe about 14 billion years ago, the universe was unimaginably compact, small, and dense • Universe began its expansion after a giant explosion, coined the Big Bang • It began expanding with unimaginable force from a hot, dense state to its present state over a loooong time (~ 13 750 ...
Star Groups and Big Bang Power Point
... The Expanding Universe Using Hubble’s observations, astronomers have been able to determine that the universe is expanding. The expanding universe can be thought of as a raisin cake rising in the oven. If you were able to sit on one raisin, you would see all the other raisins moving away from y ...
... The Expanding Universe Using Hubble’s observations, astronomers have been able to determine that the universe is expanding. The expanding universe can be thought of as a raisin cake rising in the oven. If you were able to sit on one raisin, you would see all the other raisins moving away from y ...
STATE UNIVERSITY OF NEW YORK COLLEGE OF TECHNOLOGY CANTON, NEW YORK
... death of stars, gravitational collapse, pulsars, black holes, galaxies, quasars, and cosmology. ...
... death of stars, gravitational collapse, pulsars, black holes, galaxies, quasars, and cosmology. ...
Monday, December 8 - Otterbein University
... • Usually denoted 0, it represents a uniform pressure which either helps or slows down the expansion (depending on its sign) • Physical origin of 0 is unclear • Einstein’s biggest blunder – or not ! • Appears to be small but not quite zero! • Particle Physics’ biggest failure ...
... • Usually denoted 0, it represents a uniform pressure which either helps or slows down the expansion (depending on its sign) • Physical origin of 0 is unclear • Einstein’s biggest blunder – or not ! • Appears to be small but not quite zero! • Particle Physics’ biggest failure ...
Paradigm Shifts in Cosmology
... relativity completed by Albert Einstein in 1915. The reason is that this theory shows the possibility for the space-time structure to vary due to the effects of gravity. Until that time, it had been considered to be absolutely stable. A cosmological model based on the theory of general relativity wa ...
... relativity completed by Albert Einstein in 1915. The reason is that this theory shows the possibility for the space-time structure to vary due to the effects of gravity. Until that time, it had been considered to be absolutely stable. A cosmological model based on the theory of general relativity wa ...
SYLLABUS Spring 2012 SCIE 3304, SECTION 001 ASTRONOMY
... This is a one semester course on astronomy with an emphasis on celestial motions, phases of moon, eclipses, history of astronomy, gravity, electromagnetic radiation, telescopes, and physical properties of the planets, asteroids, meteoroids, comets, and the discovery of extrasolar planets, study of t ...
... This is a one semester course on astronomy with an emphasis on celestial motions, phases of moon, eclipses, history of astronomy, gravity, electromagnetic radiation, telescopes, and physical properties of the planets, asteroids, meteoroids, comets, and the discovery of extrasolar planets, study of t ...
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. ...
Cosmology
... Describe and explain asteroids and meteorites and that these usually vaporize on entering the Earth’s atmosphere. Binary stars- most stars are part of a binary system and rotate around their common centre of mass. The Big Bang Discuss cosmic background radiation and its discovery. Talk about the sig ...
... Describe and explain asteroids and meteorites and that these usually vaporize on entering the Earth’s atmosphere. Binary stars- most stars are part of a binary system and rotate around their common centre of mass. The Big Bang Discuss cosmic background radiation and its discovery. Talk about the sig ...
PODSTAWY FIZYKI ŚRODOWISKA
... The Big Bang, czyli jak powstał wszechświat The Universe is expanding > Expanding → cooling (diluting energy content) The Cooling Universe ...
... The Big Bang, czyli jak powstał wszechświat The Universe is expanding > Expanding → cooling (diluting energy content) The Cooling Universe ...
THE BIG BANG - Dublin City Schools
... more distant galaxies had higher redshifts (light takes millions or even billions of years to reach us from a distant galaxy) This means we are seeing an image from millions or billions of years ago. He noticed that the light, when it was emitted, would have shorter wavelengths. But, he observed lon ...
... more distant galaxies had higher redshifts (light takes millions or even billions of years to reach us from a distant galaxy) This means we are seeing an image from millions or billions of years ago. He noticed that the light, when it was emitted, would have shorter wavelengths. But, he observed lon ...
understanding-the
... a. The red shift indicates that distant galaxies are 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 m ...
... a. The red shift indicates that distant galaxies are 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 m ...
Dark Matter Dark Energy The History of the Universe More of the
... change the assumptions about the luminosity of the supernovae which are used to get distances. All Type Ia Supernovae definitely come from white dwarfs but it is not known whether all involve accretion from a nearby star, merging with another white ...
... change the assumptions about the luminosity of the supernovae which are used to get distances. All Type Ia Supernovae definitely come from white dwarfs but it is not known whether all involve accretion from a nearby star, merging with another white ...
100 $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $200
... change the assumptions about the luminosity of the supernovae which are used to get distances. All Type Ia Supernovae definitely come from white dwarfs but it is not known whether all involve accretion from a nearby star, merging with another white ...
... change the assumptions about the luminosity of the supernovae which are used to get distances. All Type Ia Supernovae definitely come from white dwarfs but it is not known whether all involve accretion from a nearby star, merging with another white ...
Ultimate fate of the universe
The ultimate fate of the universe is a topic in physical cosmology. Many possible fates are predicted by rival scientific hypotheses, including futures of both finite and infinite duration.Once the notion that the universe started with a rapid inflation nicknamed the Big Bang became accepted by the majority of scientists, the ultimate fate of the universe became a valid cosmological question, one depending upon the physical properties of the mass/energy in the universe, its average density, and the rate of expansion.There is a growing consensus among cosmologists that the universe is flat and will continue to expand forever. The ultimate fate of the universe is dependent on the shape of the universe and what role dark energy will play as the universe ages.