![1_Introduction](http://s1.studyres.com/store/data/007068463_1-6bb7e4b3f5967731d838019123fd808c-300x300.png)
Birth, Age and the Future of the Universe
... Theory predicts that 24 percent of all matter was transformed into helium, and it is a triumph for Big Bang theory that one has never found a gas cloud in our Galaxy or other galaxies with less than this amount of helium. Also the observed abundances of deuterium and lithium agree well with theory. ...
... Theory predicts that 24 percent of all matter was transformed into helium, and it is a triumph for Big Bang theory that one has never found a gas cloud in our Galaxy or other galaxies with less than this amount of helium. Also the observed abundances of deuterium and lithium agree well with theory. ...
Olbers` Paradox - NMSU Astronomy
... most easily be dropped? Assumption 1) (homogeneity) has a considerable amount of observational evidence to back it up, and it would be pointless to regard assumption 4) as false, so these two assumptions should be retained. Assumption 2) could be dropped, as if the Universe is not unchanging, one co ...
... most easily be dropped? Assumption 1) (homogeneity) has a considerable amount of observational evidence to back it up, and it would be pointless to regard assumption 4) as false, so these two assumptions should be retained. Assumption 2) could be dropped, as if the Universe is not unchanging, one co ...
ISP 205: Visions of the Universe
... • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris). • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
... • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris). • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
Lecture Thirteen (Powerpoint format) - Flash
... The cosmic microwave background is incredibly uniform -- to within one part in one hundred thousand. If the microwave background were the blades of grass in a football field, then the blades would all be identical to within one centimeter. The uniformity of the cosmic microwave background is due ...
... The cosmic microwave background is incredibly uniform -- to within one part in one hundred thousand. If the microwave background were the blades of grass in a football field, then the blades would all be identical to within one centimeter. The uniformity of the cosmic microwave background is due ...
September 3 and 5 slides
... Curtis noted that many of the spirals had dark, thick bands of obscuring material and gave 3 big “ifs”: (1) if the MW has such a band, (2) if we are located in the mid-plane of the band, and (3) if the spirals are located outside the MW, then the Zone of Avoidance is caused by the obscuring material ...
... Curtis noted that many of the spirals had dark, thick bands of obscuring material and gave 3 big “ifs”: (1) if the MW has such a band, (2) if we are located in the mid-plane of the band, and (3) if the spirals are located outside the MW, then the Zone of Avoidance is caused by the obscuring material ...
The Sky is Our Laboratory
... • The existence of galaxy groups is predicted by current theories of galaxy formation ...
... • The existence of galaxy groups is predicted by current theories of galaxy formation ...
Unit 2 Lesson 1
... By the end of this lesson, you should be able to describe the structure of the universe, including the scale of distance in the universe. ...
... By the end of this lesson, you should be able to describe the structure of the universe, including the scale of distance in the universe. ...
This presentation - Fermi Gamma
... • Diffuse extra-galactic background • Compton GRO – four instruments • Opened up the gamma-ray Universe ...
... • Diffuse extra-galactic background • Compton GRO – four instruments • Opened up the gamma-ray Universe ...
Cosmology, galaxies, stars and the sun
... universe will continue to move outward and away with continual expansion infinitely. •Eventually, all stars would burn out leaving our universe with empty darkness. ...
... universe will continue to move outward and away with continual expansion infinitely. •Eventually, all stars would burn out leaving our universe with empty darkness. ...
AST1001.ch1
... • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris). • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
... • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris). • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
update : Feb.27,2014
... Hoyle and others developed a Steady State Universe model to allow for expansion and still keep the universe eternal. ...
... Hoyle and others developed a Steady State Universe model to allow for expansion and still keep the universe eternal. ...
Are we alone? - School of Physics
... would have had little effect. • In 2004, the same experiment would have devastating consequences (e.g., financial system collapses, no electricity, no water, no fuel, no public transport). • This process will accelerate. • There will come a point when the machines are in control. • We are becoming m ...
... would have had little effect. • In 2004, the same experiment would have devastating consequences (e.g., financial system collapses, no electricity, no water, no fuel, no public transport). • This process will accelerate. • There will come a point when the machines are in control. • We are becoming m ...
1 - UCSC Physics - University of California, Santa Cruz
... some of the most bizarre predictions of general relativity. The two pulsars in the J0737-3039 system are actually very far apart compared to their sizes. In a true scale model, if the pulsars were the sizes of marbles, they would be about 750 feet (225 meters) apart. Albert Einstein's 90-year-old ge ...
... some of the most bizarre predictions of general relativity. The two pulsars in the J0737-3039 system are actually very far apart compared to their sizes. In a true scale model, if the pulsars were the sizes of marbles, they would be about 750 feet (225 meters) apart. Albert Einstein's 90-year-old ge ...
Name Section
... The Big Bang Theory and the Early Universe a) How do scientists believe that the Universe began? The big bang theory states that all of the energy now in the Universe was initially very hot and was condensed into an extremely small space. b) In what form was the energy of the early Universe? Early i ...
... The Big Bang Theory and the Early Universe a) How do scientists believe that the Universe began? The big bang theory states that all of the energy now in the Universe was initially very hot and was condensed into an extremely small space. b) In what form was the energy of the early Universe? Early i ...
The IR Universe
... Distant, Dusty Galaxies Spitzer has found optically invisible galaxies so distant that we see them as they were only 3 billion years after the Big Bang. These galaxies are obscured by silicate dust, suggesting that planets could have formed even at this early time in the history of the Universe. ...
... Distant, Dusty Galaxies Spitzer has found optically invisible galaxies so distant that we see them as they were only 3 billion years after the Big Bang. These galaxies are obscured by silicate dust, suggesting that planets could have formed even at this early time in the history of the Universe. ...
UA Glossary2 - Berkeley Center for Cosmological Physics
... Black Body Spectrum- A plot of intensity of radiation versus wavelength for an object that absorbs all electromagnetic radiation. c (speed of light)- The speed that light travels in a vacuum. It is about 3 x 108 m/s (186,000 miles/s). This is the maximum speed that any particle (including light) or ...
... Black Body Spectrum- A plot of intensity of radiation versus wavelength for an object that absorbs all electromagnetic radiation. c (speed of light)- The speed that light travels in a vacuum. It is about 3 x 108 m/s (186,000 miles/s). This is the maximum speed that any particle (including light) or ...
Sample Exam 3
... C) The redshifts of nearby objects are not caused by the expansion of the universe. D) Stars don’t move, so we can’t measure a velocity for them. E) It can be used to find the distances of nearby stars. 22) Observations today suggest that spacetime in our universe is closest to being A) curved with ...
... C) The redshifts of nearby objects are not caused by the expansion of the universe. D) Stars don’t move, so we can’t measure a velocity for them. E) It can be used to find the distances of nearby stars. 22) Observations today suggest that spacetime in our universe is closest to being A) curved with ...
Cosmos & Contact - Access Research Network
... The Plot of Contact • Eventually, a more complex message is found in the signal, instructions to build a device to transport a human to Vega. • After several twists in the plot, Ellie winds up going to Vega on the transporter. • Our clip picks up as she arrives. ...
... The Plot of Contact • Eventually, a more complex message is found in the signal, instructions to build a device to transport a human to Vega. • After several twists in the plot, Ellie winds up going to Vega on the transporter. • Our clip picks up as she arrives. ...
Chapter 31 - The Galaxy & Universe
... A. Like other galaxies, but these are strong radio emitters. ...
... A. Like other galaxies, but these are strong radio emitters. ...
Chapter 31 Galaxies & the Universe
... that the universe looks the same on large scales to all observers and that it has always looked that way ...
... that the universe looks the same on large scales to all observers and that it has always looked that way ...
THE DOPPLER EFFECT
... farther apart two raisins are, the greater the speed with which they move apart. The universe's expansion is presumably decelerating because of gravitational attraction among the galaxies. We do not presently know whether there is enough mass in the universe to cause enough attraction to halt the ex ...
... farther apart two raisins are, the greater the speed with which they move apart. The universe's expansion is presumably decelerating because of gravitational attraction among the galaxies. We do not presently know whether there is enough mass in the universe to cause enough attraction to halt the ex ...
light energy
... Evidence that the universe is expanding and speeding up too – think of it as the first half of an explosion ...
... Evidence that the universe is expanding and speeding up too – think of it as the first half of an explosion ...
Structure of the Universe
... The two are related by the Hubble Constant H, through the Hubble law: We can always get V from the red shift, so if we know d or H we can find the other ...
... The two are related by the Hubble Constant H, through the Hubble law: We can always get V from the red shift, so if we know d or H we can find the other ...
Ultimate fate of the universe
![](https://commons.wikimedia.org/wiki/Special:FilePath/Aleksandr_Fridman.png?width=300)
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.