Dark Energy: Back to Newton?
... Einstein believed so strongly in the relativity of inertia that he called it “Mach’s Principle”. The inertia should be fully and exclusively determined by matter. “There can be no inertia relative to space but only an inertia of masses relative to one another”. He defined his new fundamental constan ...
... Einstein believed so strongly in the relativity of inertia that he called it “Mach’s Principle”. The inertia should be fully and exclusively determined by matter. “There can be no inertia relative to space but only an inertia of masses relative to one another”. He defined his new fundamental constan ...
Ch. 26.5: The Expanding Universe
... Exerts gravitational force on visible matter Universe may be 90% + dark matter Why do we think Dark Matter exists? Galaxies are accelerating faster than they should be (based on the observable matter in the Universe). The acceleration due to gravity does not match up with the amount of matter that w ...
... Exerts gravitational force on visible matter Universe may be 90% + dark matter Why do we think Dark Matter exists? Galaxies are accelerating faster than they should be (based on the observable matter in the Universe). The acceleration due to gravity does not match up with the amount of matter that w ...
Order of Magnitude and Estimation
... 4. A rough estimate for the volume of your body in cm 3 would be closest to A) ...
... 4. A rough estimate for the volume of your body in cm 3 would be closest to A) ...
ppt - Cyclotron Institute
... Phase transition to Hadronic Matter (Mass Generation, Quark Confinement), T≈170MeV (0.00001 sec.) Low-mass nuclei: H (p), d (pn), 3He, 4He, 7Li (3 min.) Heavy elements in star collapses: supernovae (still today) Exotic forms of (quark) matter in neutron stars (still today) ...
... Phase transition to Hadronic Matter (Mass Generation, Quark Confinement), T≈170MeV (0.00001 sec.) Low-mass nuclei: H (p), d (pn), 3He, 4He, 7Li (3 min.) Heavy elements in star collapses: supernovae (still today) Exotic forms of (quark) matter in neutron stars (still today) ...
Where do we come from?
... t=0: The Big Bang How do we know that this happened? Universe was denser in the past; if we daringly extrapolate backward to infinite density, that was a finite time ago. ...
... t=0: The Big Bang How do we know that this happened? Universe was denser in the past; if we daringly extrapolate backward to infinite density, that was a finite time ago. ...
Here
... Energy. • As the universe expanded, it cooled. This allowed the first subatomic particles to form (protons, neutron, electrons). • The simplest elements were the first to form. Hydrogen and helium. The fuel for STARS! ...
... Energy. • As the universe expanded, it cooled. This allowed the first subatomic particles to form (protons, neutron, electrons). • The simplest elements were the first to form. Hydrogen and helium. The fuel for STARS! ...
Chapter 12 - Our Place in the Universe
... Starter: Recall units of measurement (put them in order of size) and radar ranging Discuss why radar ranging has limitations and introduce the idea of parallax 20E Range finding and parallax will fit in here, followed by 20S measuring distances within the Solar System and beyond which links this to ...
... Starter: Recall units of measurement (put them in order of size) and radar ranging Discuss why radar ranging has limitations and introduce the idea of parallax 20E Range finding and parallax will fit in here, followed by 20S measuring distances within the Solar System and beyond which links this to ...
ASTRONOMY 1303 Syllabus Fall 2015
... Once during the semester the class will go out to the observatory located 5 miles off campus. During this time students will be using telescopes to explore heavenly objects like clusters, double stars and nebulas. The date of this lab is dependent upon the weather and phase of the Moon. This fall we ...
... Once during the semester the class will go out to the observatory located 5 miles off campus. During this time students will be using telescopes to explore heavenly objects like clusters, double stars and nebulas. The date of this lab is dependent upon the weather and phase of the Moon. This fall we ...
Galaxies and the Big Bang Theory
... The shape of a spiral galaxy is a bulge in the middle and arms that spiral outward like ______________. •Many bright, young stars •Spiral galaxies contain ____________ and _____________. Elliptical Galaxies •Look like _______________ or __________________ ______________. •Billions of stars •Contain ...
... The shape of a spiral galaxy is a bulge in the middle and arms that spiral outward like ______________. •Many bright, young stars •Spiral galaxies contain ____________ and _____________. Elliptical Galaxies •Look like _______________ or __________________ ______________. •Billions of stars •Contain ...
Time From the Perspective of a Particle Physicist
... are remnants from the first few minutes after the Big Bang • To explore back to earlier times we use our understanding of physics • The earlier you go in time the hotter was the Universe. Particle accelerators can ...
... are remnants from the first few minutes after the Big Bang • To explore back to earlier times we use our understanding of physics • The earlier you go in time the hotter was the Universe. Particle accelerators can ...
Lecture082602 - Florida State University
... If you were 1 LY away and flashed a light, we wouldn’t see it for a year The starlight we see tonight was emitted by the stars many ...
... If you were 1 LY away and flashed a light, we wouldn’t see it for a year The starlight we see tonight was emitted by the stars many ...
Astronomy The Night Sky. Vocabulary Terms to know for the
... the Andromeda Galaxy. B: _______________________ Our Universe 1. Ever since that first initial violent explosion, our universe has ____________________ ____________________. a. How do we know? We watch all types of stars, nebula, galaxies, quasars, pulsars, and black holes. b. Astronomers discovered ...
... the Andromeda Galaxy. B: _______________________ Our Universe 1. Ever since that first initial violent explosion, our universe has ____________________ ____________________. a. How do we know? We watch all types of stars, nebula, galaxies, quasars, pulsars, and black holes. b. Astronomers discovered ...
Lecture17
... are now being tested, such as ion engines. Ions are charged atoms, which can be accelerated by an electric field to very high speed . They are more effective than chemical rockets (per pound of fuel), and can even be run on solar energy. They create much less thrust, but for a much longer time. ...
... are now being tested, such as ion engines. Ions are charged atoms, which can be accelerated by an electric field to very high speed . They are more effective than chemical rockets (per pound of fuel), and can even be run on solar energy. They create much less thrust, but for a much longer time. ...
Lecture 33
... • A few seconds after the Big Bang, the main particle species present were protons, neutrons, neutrinos, and photons ...
... • A few seconds after the Big Bang, the main particle species present were protons, neutrons, neutrinos, and photons ...
The Solar System and our Universe
... photos of stellar explosions & nebulae. • Provided evidence that throughout the universe stars are dying, and new stars & galaxies are constantly forming. ...
... photos of stellar explosions & nebulae. • Provided evidence that throughout the universe stars are dying, and new stars & galaxies are constantly forming. ...
Chapter 2 Basic Chemistry
... particles, such as protons, electrons, and neutrons, to form. Hydrogen nuclei began forming about one second after the big bang, but the temperature was still too high for atoms to form and remain stable. Electrons did not combine with atomic nuclei to form atoms until about 380,000 years after the ...
... particles, such as protons, electrons, and neutrons, to form. Hydrogen nuclei began forming about one second after the big bang, but the temperature was still too high for atoms to form and remain stable. Electrons did not combine with atomic nuclei to form atoms until about 380,000 years after the ...
Content Clarification for Modeling the Universe: Earth and Space
... systems of two or more stars orbiting around one another. • On the basis of scientific evidence, the universe is estimated to be over ten billion years old. The current theory is that its entire contents expanded explosively from a hot, dense, chaotic mass. Stars condensed by gravity out of clouds o ...
... systems of two or more stars orbiting around one another. • On the basis of scientific evidence, the universe is estimated to be over ten billion years old. The current theory is that its entire contents expanded explosively from a hot, dense, chaotic mass. Stars condensed by gravity out of clouds o ...
Quiz Maker - Geneva 304
... Review Questions: (Give answers in your own words) A Sense of the Universe 1. What was the universe like for ancient/medieval astronomers? 2. How did Astronomy relate to religious beliefs? 3. Why has the understandings and discoveries in the field of Astronomy increased so much over the last 30 year ...
... Review Questions: (Give answers in your own words) A Sense of the Universe 1. What was the universe like for ancient/medieval astronomers? 2. How did Astronomy relate to religious beliefs? 3. Why has the understandings and discoveries in the field of Astronomy increased so much over the last 30 year ...
Outline of the Course - UH Institute for Astronomy
... The objective of this course is to help you develop a basic knowledge of the universe we live in. However, learning the ‘facts’ should not be the sole purpose of this course. The scientific methods we employed to develop our vision of the universe is also an important subject. It is important to kee ...
... The objective of this course is to help you develop a basic knowledge of the universe we live in. However, learning the ‘facts’ should not be the sole purpose of this course. The scientific methods we employed to develop our vision of the universe is also an important subject. It is important to kee ...
Review of "Man`s Place in Nature" by Alfred Russel Wallace
... they do in those of moderate size. This could not possibly happen if the stars were infinite in number or even if they extended in similar profusion into spaces much greater than those which our telescopes can reach, because in that case these dark backgrounds would be illuminated by the light of mi ...
... they do in those of moderate size. This could not possibly happen if the stars were infinite in number or even if they extended in similar profusion into spaces much greater than those which our telescopes can reach, because in that case these dark backgrounds would be illuminated by the light of mi ...
Gamma-Ray Bursts
... Ranking second only behind the Big Bang, Gamma-ray bursts (GRBs) are the most luminous explosions known to occur in our Universe. These milliseconds to minutes lasting flashes of gamma-ray photons, the most energetic form of light, release as much energy in their short duration as our Sun will in it ...
... Ranking second only behind the Big Bang, Gamma-ray bursts (GRBs) are the most luminous explosions known to occur in our Universe. These milliseconds to minutes lasting flashes of gamma-ray photons, the most energetic form of light, release as much energy in their short duration as our Sun will in it ...
universe - Northwest ISD Moodle
... expanding in a uniform manner and direction. • Towards one another (gravity) • Away from one another (momentum from the Big Bang) While objects within the Universe have been expanding, for the most part, in a uniform manner, the motion apart has not all been at the same speed; instead it follows a p ...
... expanding in a uniform manner and direction. • Towards one another (gravity) • Away from one another (momentum from the Big Bang) While objects within the Universe have been expanding, for the most part, in a uniform manner, the motion apart has not all been at the same speed; instead it follows a p ...
Origin of the Universe
... have produced a multitude of theories concerning the origin, evolution, and structure of the universe. Universe means everything that exists in any place-all the space, matter, and energy in existence. The majority of scientists today think that the universe is extremely vast, and that it is more th ...
... have produced a multitude of theories concerning the origin, evolution, and structure of the universe. Universe means everything that exists in any place-all the space, matter, and energy in existence. The majority of scientists today think that the universe is extremely vast, and that it is more th ...
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.