Dear Menon I have used bold italics to express my agreement and
... we mistakenly think about it as the beginning from nothing, a judeo-Christian thinking inspired by idea of “creation”) a big bang is attracted back to the core by gravity. It again reaches the explosive limit and explodes. Yes! Matter that is nearer to the core is attracted more and moves faster tha ...
... we mistakenly think about it as the beginning from nothing, a judeo-Christian thinking inspired by idea of “creation”) a big bang is attracted back to the core by gravity. It again reaches the explosive limit and explodes. Yes! Matter that is nearer to the core is attracted more and moves faster tha ...
Space Science Chapter 10.1 textbook
... from the island, your knowledge of the ocean and what lay beyond the horizon would be limited. You might come to understand the behaviour of the sea life on your island’s shores and to notice patterns in the objects in the night sky. However, it would be impossible for you to develop any sense of th ...
... from the island, your knowledge of the ocean and what lay beyond the horizon would be limited. You might come to understand the behaviour of the sea life on your island’s shores and to notice patterns in the objects in the night sky. However, it would be impossible for you to develop any sense of th ...
Curriculum Development Unit Overview DRAFT Planning For Each
... HS-ESS1-1. Develop a model based on evidence to illustrate the life span of the sun and the role of nuclear fusion in the sun’s core to release energy that eventually reaches Earth in the form of radiation. HS-ESS1-2. Construct an explanation of the Big Bang theory based on astronomical evidence of ...
... HS-ESS1-1. Develop a model based on evidence to illustrate the life span of the sun and the role of nuclear fusion in the sun’s core to release energy that eventually reaches Earth in the form of radiation. HS-ESS1-2. Construct an explanation of the Big Bang theory based on astronomical evidence of ...
Big Bang and Beyond
... Interpretations of the results • IF the density of the matter after 1 nsec from the Big Bang is equal to 447,225,917,218,507,401,284,017 mg/cc, the Universe would have collapsed by now. • IF the density of the matter after 1 nsec from the Big Bang is equal to 447,225,917,218,507,401,284,015 mg/cc, ...
... Interpretations of the results • IF the density of the matter after 1 nsec from the Big Bang is equal to 447,225,917,218,507,401,284,017 mg/cc, the Universe would have collapsed by now. • IF the density of the matter after 1 nsec from the Big Bang is equal to 447,225,917,218,507,401,284,015 mg/cc, ...
solution - Evergreen Archives
... 24. Suppose it was discovered that Hubble's constant, H0, was smaller than previously thought. How would this affect our estimate of the age of the universe? It would have no effect on our estimate of the age of the universe. The age of the universe would be smaller. The age of the universe would be ...
... 24. Suppose it was discovered that Hubble's constant, H0, was smaller than previously thought. How would this affect our estimate of the age of the universe? It would have no effect on our estimate of the age of the universe. The age of the universe would be smaller. The age of the universe would be ...
Big bang, red shift and doppler effect
... Observations help scientists answer questions about the Universe. Scientists cannot answer every question. Which one of the following questions cannot be answered by scientists? Tick ( ) one box. ...
... Observations help scientists answer questions about the Universe. Scientists cannot answer every question. Which one of the following questions cannot be answered by scientists? Tick ( ) one box. ...
Chapter 21: Energy and Matter in the Universe
... nitrogen-13 becomes carbon-13 by emitting an antielectron and a neutrino. The carbon-13 nucleus adds a proton to become nitrogen-14 plus a gamma ray in step 3. In step 4, nitrogen-14 adds a proton to become oxygen-15 plus a gamma ray. Oxygen-15 becomes nitrogen-15 by emitting an antielectron and a n ...
... nitrogen-13 becomes carbon-13 by emitting an antielectron and a neutrino. The carbon-13 nucleus adds a proton to become nitrogen-14 plus a gamma ray in step 3. In step 4, nitrogen-14 adds a proton to become oxygen-15 plus a gamma ray. Oxygen-15 becomes nitrogen-15 by emitting an antielectron and a n ...
teachers version.
... The farther away a galaxy is, the faster it appears to be moving away from us. c) A galaxy is 2 billion light-years away. How fast is it moving? Label this on the graph. 32 million m/s d) A galaxy is 5 billion light-years away. How fast is it moving? Label this on the graph. 82 million m/s e) A gala ...
... The farther away a galaxy is, the faster it appears to be moving away from us. c) A galaxy is 2 billion light-years away. How fast is it moving? Label this on the graph. 32 million m/s d) A galaxy is 5 billion light-years away. How fast is it moving? Label this on the graph. 82 million m/s e) A gala ...
Matter is everything around you.
... for the most part, described the longitude and latitude lines of the earth. He was a believer that the earth was the centre of the universe and worked to advance this theory. The Ptolemaic system is explained why some planets seemed to move backwards for periods of time in their orbit around earth. ...
... for the most part, described the longitude and latitude lines of the earth. He was a believer that the earth was the centre of the universe and worked to advance this theory. The Ptolemaic system is explained why some planets seemed to move backwards for periods of time in their orbit around earth. ...
Problem Set 6
... a combination of the two? Explain your reasoning. Question B Long-distance electric-power transmission lines always operate at very high voltage, sometimes as much as 750 kV. What are the advantages of such high voltages? What are the disadvantages? Question C Explain why a lightbulb almost always b ...
... a combination of the two? Explain your reasoning. Question B Long-distance electric-power transmission lines always operate at very high voltage, sometimes as much as 750 kV. What are the advantages of such high voltages? What are the disadvantages? Question C Explain why a lightbulb almost always b ...
cosmology-2005
... Evidence from Type Ia supernovae for a decelerating, then accelerating universe, and thus for dark energy. ...
... Evidence from Type Ia supernovae for a decelerating, then accelerating universe, and thus for dark energy. ...
Unit 2 PowerPoint Unit2_BigHistoryProject2013_PPT-7
... • Isaac Newton was one of the inventors of calculus and did important work in many areas. His view that the Universe was both infinitely big and infinitely old was very influential. • Henrietta Leavitt found a way to use Cepheid variable stars to measure the distance to distant galaxies, which was a ...
... • Isaac Newton was one of the inventors of calculus and did important work in many areas. His view that the Universe was both infinitely big and infinitely old was very influential. • Henrietta Leavitt found a way to use Cepheid variable stars to measure the distance to distant galaxies, which was a ...
8. Particle Dark Matter.
... photons is suppressed by a factor exp(−mK c2 /kT ). If the KK annihilation rate drops below the expansion rate while kT > 2mK c2 , the particle decouples and redshifts thereafter independent of other species. This happens to neutrinos, and it may happen to other weakly interacting particles. If the ...
... photons is suppressed by a factor exp(−mK c2 /kT ). If the KK annihilation rate drops below the expansion rate while kT > 2mK c2 , the particle decouples and redshifts thereafter independent of other species. This happens to neutrinos, and it may happen to other weakly interacting particles. If the ...
Other Galaxies, their Distances, and the Expansion of the Universe
... explosions of massive stars ...
... explosions of massive stars ...
N-Body Simulation - Google Project Hosting
... S is called the action. It is a number with the dimensions of (Energy) * (Time). S depends on L, and L in turn depends on the function x(t). Given any function x(t), we can produce the number S. Problems: Unless the space of paths used is restricted, the minimum of the action will be achieved where ...
... S is called the action. It is a number with the dimensions of (Energy) * (Time). S depends on L, and L in turn depends on the function x(t). Given any function x(t), we can produce the number S. Problems: Unless the space of paths used is restricted, the minimum of the action will be achieved where ...
Lecture 12
... The light from the Andromeda galaxy left it about 1.5Myr ago, and the light from something in the Virgo Cluster about 65 Myr ago (about when the dinosaurs were killed). We’ll see we think the Universe is ~14Gyr old, so light from an object >14Glyr (5000Mpc) away will not have had enough time to reac ...
... The light from the Andromeda galaxy left it about 1.5Myr ago, and the light from something in the Virgo Cluster about 65 Myr ago (about when the dinosaurs were killed). We’ll see we think the Universe is ~14Gyr old, so light from an object >14Glyr (5000Mpc) away will not have had enough time to reac ...
Evolution_Univ - sdsu
... Question #7: The Mighty Atom (Let yourself go. Feel the force, Luke). This is the best chapter. 1. “Things reached such a pitch that at one conference Bohr remarked of a new theory that the question was not whether it was crazy, but whether it was crazy enough.” How is Quantum physics different from ...
... Question #7: The Mighty Atom (Let yourself go. Feel the force, Luke). This is the best chapter. 1. “Things reached such a pitch that at one conference Bohr remarked of a new theory that the question was not whether it was crazy, but whether it was crazy enough.” How is Quantum physics different from ...
AST 207 Final Exam, Answers 15 December 2010
... 7. The angular size of the hot spots in the cosmic background radiation is 1 degree. The cosmic background radiation shows the universe as it was at recombination. a. (2 pts.) The linear size of the hot spots is a known length. Explain why that is known. The linear size is (speed of light)×(age of u ...
... 7. The angular size of the hot spots in the cosmic background radiation is 1 degree. The cosmic background radiation shows the universe as it was at recombination. a. (2 pts.) The linear size of the hot spots is a known length. Explain why that is known. The linear size is (speed of light)×(age of u ...
May 2000
... the mean-square displacement h[~r(t1 ) − ~r(t2 )]2 i can be used to determine Boltzmann’s constant. Assume the densities of the solid and fluid are identical, so buoyancy can be ignored. The cause of the Brownian motion is a rapidly fluctuating force due to collisions with the molecules of the fluid ...
... the mean-square displacement h[~r(t1 ) − ~r(t2 )]2 i can be used to determine Boltzmann’s constant. Assume the densities of the solid and fluid are identical, so buoyancy can be ignored. The cause of the Brownian motion is a rapidly fluctuating force due to collisions with the molecules of the fluid ...
Physics 2020 Exam 1 Summer Review Questions
... 1. Robert Milliken made a fundamental discovery about electric charges in 1909. What was it? 2. What is the difference between conductors, semiconductors, and insulators? 3. What is meant by a conductor being grounded ? 4. What is Coulomb’s Law? Compare it to Newton’s Law of Gravity. What is the pri ...
... 1. Robert Milliken made a fundamental discovery about electric charges in 1909. What was it? 2. What is the difference between conductors, semiconductors, and insulators? 3. What is meant by a conductor being grounded ? 4. What is Coulomb’s Law? Compare it to Newton’s Law of Gravity. What is the pri ...
PART 1 - Berrigasteiz
... questions. Step3: T goes on reading and comments on ancient Greeks’ beliefs and the picture from the Hubble telescope. Step 4: T writes the word Big Bang on b/b and asks for previous knowledge. Step 5: T distributes labels, helps Ss to understand them and starts his or her explanation. Before ...
... questions. Step3: T goes on reading and comments on ancient Greeks’ beliefs and the picture from the Hubble telescope. Step 4: T writes the word Big Bang on b/b and asks for previous knowledge. Step 5: T distributes labels, helps Ss to understand them and starts his or her explanation. Before ...
Weighing Earth, Sun, & Universe—20 Apr Weighing the Earth • Define a motion
... 3. A planet orbits a star at a radius of 1 AU. One orbit takes ½ of an earth year. The mass of the star is ___ the mass of the sun. ...
... 3. A planet orbits a star at a radius of 1 AU. One orbit takes ½ of an earth year. The mass of the star is ___ the mass of the sun. ...
Hubble`s Constant - Scientific Research Publishing
... some definite past time; in such a way that the expansion rate determines the age of the Universe. Hubble’s constant measures how fast is the process of the expansion, and it is involved in Hubble’s law. The larger the Hubble’s constant, the faster the expansion rate. Also, Hubble’s constant is a me ...
... some definite past time; in such a way that the expansion rate determines the age of the Universe. Hubble’s constant measures how fast is the process of the expansion, and it is involved in Hubble’s law. The larger the Hubble’s constant, the faster the expansion rate. Also, Hubble’s constant is a me ...
How Old is the Universe?
... 271, 957) apply this technique to globular clusters and find that the age of the Universe is greater than 12.07 Gyr with 95% confidence. They say the age is proportional to one over the luminosity of the RR Lyra stars which are used to determine the distances to globular clusters. Chaboyer (1997) gi ...
... 271, 957) apply this technique to globular clusters and find that the age of the Universe is greater than 12.07 Gyr with 95% confidence. They say the age is proportional to one over the luminosity of the RR Lyra stars which are used to determine the distances to globular clusters. Chaboyer (1997) gi ...
Astronomy - SAVE MY EXAMS!
... placed near the tops of mountains. Suggest why radio telescopes do not have to be placed high up a mountain. ...
... placed near the tops of mountains. Suggest why radio telescopes do not have to be placed high up a mountain. ...
Flatness problem
The flatness problem (also known as the oldness problem) is a cosmological fine-tuning problem within the Big Bang model of the universe. Such problems arise from the observation that some of the initial conditions of the universe appear to be fine-tuned to very 'special' values, and that a small deviation from these values would have had massive effects on the nature of the universe at the current time.In the case of the flatness problem, the parameter which appears fine-tuned is the density of matter and energy in the universe. This value affects the curvature of space-time, with a very specific critical value being required for a flat universe. The current density of the universe is observed to be very close to this critical value. Since the total density departs rapidly from the critical value over cosmic time, the early universe must have had a density even closer to the critical density, departing from it by one part in 1062 or less. This leads cosmologists to question how the initial density came to be so closely fine-tuned to this 'special' value.The problem was first mentioned by Robert Dicke in 1969. The most commonly accepted solution among cosmologists is cosmic inflation, the idea that the universe went through a brief period of extremely rapid expansion in the first fraction of a second after the Big Bang; along with the monopole problem and the horizon problem, the flatness problem is one of the three primary motivations for inflationary theory.