The Universe: Big, weird and kind of scary!
... only be explained by an expanding universe. 2. In the 1960s, two engineers (Arno Penzias and Robert Wilson) accidentally discovered background microwave radiation left over from the big bang: https://www.youtube.com/watch?v= 1kqWWLpyMpY 3. Recent observations of older (more distant) galaxies reveal ...
... only be explained by an expanding universe. 2. In the 1960s, two engineers (Arno Penzias and Robert Wilson) accidentally discovered background microwave radiation left over from the big bang: https://www.youtube.com/watch?v= 1kqWWLpyMpY 3. Recent observations of older (more distant) galaxies reveal ...
SOLUTION SET
... 23. The Earth spins about its own axis and revolves around the Sun in the same sense. The length of a sidereal day is 23 hours and 56 minutes. If the Earth’s spin rate were to double, the length of the sidereal day would be: A. 23 hours and 58 minutes B. 11 hours and 56 minutes C. 24 hours and 4 mi ...
... 23. The Earth spins about its own axis and revolves around the Sun in the same sense. The length of a sidereal day is 23 hours and 56 minutes. If the Earth’s spin rate were to double, the length of the sidereal day would be: A. 23 hours and 58 minutes B. 11 hours and 56 minutes C. 24 hours and 4 mi ...
Albert Einstein
... • Einstein attempted to find solutions to his equations that described the complete spacetime “shape” of the universe. • Much to his consternation, he discovered that he could not find static solutions – they all described a universe that was either expanding or contracting. ...
... • Einstein attempted to find solutions to his equations that described the complete spacetime “shape” of the universe. • Much to his consternation, he discovered that he could not find static solutions – they all described a universe that was either expanding or contracting. ...
Hubble`s Constant - Scientific Research Publishing
... As cosmological distances are measured in megaparsecs, the natural unit for H is kilometers per second per megaparsec. However, the real Universe is non uniform on a small scale, and its motion obeys Hubble’s law only as a large scale average; in such a way that Hubble’s constant is only meaningful ...
... As cosmological distances are measured in megaparsecs, the natural unit for H is kilometers per second per megaparsec. However, the real Universe is non uniform on a small scale, and its motion obeys Hubble’s law only as a large scale average; in such a way that Hubble’s constant is only meaningful ...
BIG BANG BALLOONS
... Introduction: In the 1920s, astronomer Edwin Hubble realized that light coming from galaxies is shifted into the longer, red wavelengths. This would indicate that they are moving away from Earth. By carefully observing the light from galaxies at different distances from Earth, he determined that the ...
... Introduction: In the 1920s, astronomer Edwin Hubble realized that light coming from galaxies is shifted into the longer, red wavelengths. This would indicate that they are moving away from Earth. By carefully observing the light from galaxies at different distances from Earth, he determined that the ...
PowerPoint, 10.3 MB - Academic Server| Cleveland State University
... “What are the chances that a tornado might blow through a junkyard containing all the parts of a 747, accidentally assemble them into a plane, and leave it ready for take-off? The possibilities are so small as to be negligible even if a tornado were to blow through enough junkyards to fill the whole ...
... “What are the chances that a tornado might blow through a junkyard containing all the parts of a 747, accidentally assemble them into a plane, and leave it ready for take-off? The possibilities are so small as to be negligible even if a tornado were to blow through enough junkyards to fill the whole ...
distance to the centre of the Milky Way.
... After Shapley: we knew we were about 2/3 of the way out from the very centre of a huge stellar system, now known to be about 100,000 light years in diameter. Note that Shapley actually overestimated the distances somewhat, because he didn’t fully understand the effects of the obscuring dust. But thi ...
... After Shapley: we knew we were about 2/3 of the way out from the very centre of a huge stellar system, now known to be about 100,000 light years in diameter. Note that Shapley actually overestimated the distances somewhat, because he didn’t fully understand the effects of the obscuring dust. But thi ...
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 ...
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 ...
3rd EXAM VERSION A key - Department of Physics and Astronomy
... 30. I thought that the Big Bang was hot! If the cosmic microwave background radiation is the radiation left over from the Big Bang, why then is it only 3 K? A. *The Big Bang itself was hot, but the temperature decreased as the universe expanded, and the temperature now is 3 K. B. It is not from the ...
... 30. I thought that the Big Bang was hot! If the cosmic microwave background radiation is the radiation left over from the Big Bang, why then is it only 3 K? A. *The Big Bang itself was hot, but the temperature decreased as the universe expanded, and the temperature now is 3 K. B. It is not from the ...
Type Ia supernovae and the ESSENCE supernova survey
... What was needed was a systematic search carried out on the same telescope, with the same camera, and with the same filters. ...
... What was needed was a systematic search carried out on the same telescope, with the same camera, and with the same filters. ...
ppt
... objects actually are; it measures how bright they appear to us, which also depends on how close they are eg Sun has m = -26.74 • Absolute magnitude - measures how bright objects actually are -- it is defined as the apparent magnitude that an object would have if it were located at a distance of 10 p ...
... objects actually are; it measures how bright they appear to us, which also depends on how close they are eg Sun has m = -26.74 • Absolute magnitude - measures how bright objects actually are -- it is defined as the apparent magnitude that an object would have if it were located at a distance of 10 p ...
Astronomy Basics
... Slide 6: Gallery picture from Keck Observatory Slide 2: Educational graphic from Imagine the Universe! Slide 3: Harvard's Field Guide to X-ray Astronomy. Slide 7: Educational graphic from Imagine the Universe! ...
... Slide 6: Gallery picture from Keck Observatory Slide 2: Educational graphic from Imagine the Universe! Slide 3: Harvard's Field Guide to X-ray Astronomy. Slide 7: Educational graphic from Imagine the Universe! ...
Astronomy and the Bible
... contract under their own weight to form stars. This process has never been observed, but if it did occur, it would take many human lifetimes. It is known that clouds do not spontaneously collapse to form stars. The clouds possess considerable mass, but they are so large that their gravity is very fe ...
... contract under their own weight to form stars. This process has never been observed, but if it did occur, it would take many human lifetimes. It is known that clouds do not spontaneously collapse to form stars. The clouds possess considerable mass, but they are so large that their gravity is very fe ...
The Electric Universe by Wallace Thornhill and David Talbott
... dark energy, and other incomprehensible objects and forces, all with one thing in common: they remain unseen and inaccessible under known laws of physics. With each new discovery, the ‘Big Bang’ universe grows increasingly bizarre, inviting parodies that underscore the question many working scient ...
... dark energy, and other incomprehensible objects and forces, all with one thing in common: they remain unseen and inaccessible under known laws of physics. With each new discovery, the ‘Big Bang’ universe grows increasingly bizarre, inviting parodies that underscore the question many working scient ...
Ay 1 – Final Exam
... A. It absorbed a photon of energy greater than or equal to the energy difference between ground and the excited state B. It tunneled to a higher energy state C. Another atom of sufficient energy collided with it D. Either A or C E. EIther A, B or C 14. Which one of the following has never been used ...
... A. It absorbed a photon of energy greater than or equal to the energy difference between ground and the excited state B. It tunneled to a higher energy state C. Another atom of sufficient energy collided with it D. Either A or C E. EIther A, B or C 14. Which one of the following has never been used ...
IDS 102
... The definition of a light year also mentions other units. We will not be using “parsecs” in this class, but we will mention “astronomic units” What is the definition of an astronomic unit (AU)? ...
... The definition of a light year also mentions other units. We will not be using “parsecs” in this class, but we will mention “astronomic units” What is the definition of an astronomic unit (AU)? ...
A cosmic consequence of assuming that rotational motion is relative
... vacuum energy, leading to the largest known conflict between theory and observation. We have shown that the general theory of relativity tells another story. It is not possible to define any type of motion for a particle that is alone in the universe. Motion can only be defined relative to other par ...
... vacuum energy, leading to the largest known conflict between theory and observation. We have shown that the general theory of relativity tells another story. It is not possible to define any type of motion for a particle that is alone in the universe. Motion can only be defined relative to other par ...
Milky Way galaxy - Uplift North Hills Prep
... universe, its origin, and its future. foundation: Einstein’s general theory of relativity and its theory of gravitation—for in the large-scale structure of the universe, gravity is the dominant force. ...
... universe, its origin, and its future. foundation: Einstein’s general theory of relativity and its theory of gravitation—for in the large-scale structure of the universe, gravity is the dominant force. ...
Ch. 5 The Universe and Solar System
... • Proof: 1929 Edwin Hubble observed that galaxies are moving away from each other—that the universe is expanding. • Red shift—means movement is away. • Proof 2: 1965 Arno Penzlas and Robert Wilson discovered background radiation—a remnant of the Big Bang. It is evenly distributed. • Proof 3: 1995 NA ...
... • Proof: 1929 Edwin Hubble observed that galaxies are moving away from each other—that the universe is expanding. • Red shift—means movement is away. • Proof 2: 1965 Arno Penzlas and Robert Wilson discovered background radiation—a remnant of the Big Bang. It is evenly distributed. • Proof 3: 1995 NA ...
Non-standard cosmology
A non-standard cosmology is any physical cosmological model of the universe that has been, or still is, proposed as an alternative to the Big Bang model of standard physical cosmology. In the history of cosmology, various scientists and researchers have disputed parts or all of the Big Bang due to a rejection or addition of fundamental assumptions needed to develop a theoretical model of the universe. From the 1940s to the 1960s, the astrophysical community was equally divided between supporters of the Big Bang theory and supporters of a rival steady state universe. It was not until advances in observational cosmology in the late 1960s that the Big Bang would eventually become the dominant theory, and today there are few active researchers who dispute it.The term non-standard is applied to any cosmological theory that does not conform to the scientific consensus, but is not used in describing alternative models where no consensus has been reached, and is also used to describe theories that accept a ""big bang"" occurred but differ as to the detailed physics of the origin and evolution of the universe. Because the term depends on the prevailing consensus, the meaning of the term changes over time. For example, hot dark matter would not have been considered non-standard in 1990, but would be in 2010. Conversely, a non-zero cosmological constant resulting in an accelerating universe would have been considered non-standard in 1990, but is part of the standard cosmology in 2010.