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 ...
Ch. 27.3 Star Groups
... One complete rotation in 200 million years. Our sun is about 30,000 light-years from the center. ...
... One complete rotation in 200 million years. Our sun is about 30,000 light-years from the center. ...
PowerPoint
... • Solving this equation, Friedmann predicted that the universe had to be expanding if it were to exist. • Einstein added the “cosmological constant” to his own field equations because he could not believe in an expanding universe. Later Einstein remarked, “That was the greatest scientific blunder th ...
... • Solving this equation, Friedmann predicted that the universe had to be expanding if it were to exist. • Einstein added the “cosmological constant” to his own field equations because he could not believe in an expanding universe. Later Einstein remarked, “That was the greatest scientific blunder th ...
THE BIG BANG - Dublin City Schools
... • They use radioactive dating of uranium isotopes! • we know that the oldest isotopes were created (through nuclear reactions in supernovae) about 10 billion years ago. ...
... • They use radioactive dating of uranium isotopes! • we know that the oldest isotopes were created (through nuclear reactions in supernovae) about 10 billion years ago. ...
Before people could understand the history of the universe, they had
... • It is the force of gravity which keeps all the planets in their elliptical orbits around the Sun • Newton's Laws say that nothing is naturally at rest; all heavenly bodies should be constantly moving, with no limits on space and time • Newton believed that the Universe was eternal and infinite; th ...
... • It is the force of gravity which keeps all the planets in their elliptical orbits around the Sun • Newton's Laws say that nothing is naturally at rest; all heavenly bodies should be constantly moving, with no limits on space and time • Newton believed that the Universe was eternal and infinite; th ...
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 ...
Life2
... Decoupling of matter from radiation at about 379,000 years to form protons and electrons Radiation seen today as microwave background radiation Most of early universe made of about ¾ hydrogen, ¼ helium and trace (.000,000,001) of lithium. No elements produced with an atomic number higher than lithiu ...
... Decoupling of matter from radiation at about 379,000 years to form protons and electrons Radiation seen today as microwave background radiation Most of early universe made of about ¾ hydrogen, ¼ helium and trace (.000,000,001) of lithium. No elements produced with an atomic number higher than lithiu ...
24.1 The Study of Light
... 25.3 The Universe The Big Bang The Big Crunch? • The future of the universe follows two possible paths: 1. The universe will expand forever. 2. The outward expansion will stop and gravitational contraction will follow. • The view currently favored by most scientists is an expanding universe with ...
... 25.3 The Universe The Big Bang The Big Crunch? • The future of the universe follows two possible paths: 1. The universe will expand forever. 2. The outward expansion will stop and gravitational contraction will follow. • The view currently favored by most scientists is an expanding universe with ...
2014 Joseph E. Pesce, Ph.D. 1 Astro 113 Final Exam Review 1. What
... 23. What is the role of collisions between galaxies in the formation and evolution of galaxies? 24. What is cosmological redshift? 25. An object at room temperature (T = 300 degrees Kelvin) emits ...
... 23. What is the role of collisions between galaxies in the formation and evolution of galaxies? 24. What is cosmological redshift? 25. An object at room temperature (T = 300 degrees Kelvin) emits ...
The Big Bang
... curve outward. Most new stars are found in the arms. Elliptical – A round flattened ball. Contains mostly old stars. Irregular – No certain shape. Contain many bright young stars and much dust and gas. ...
... curve outward. Most new stars are found in the arms. Elliptical – A round flattened ball. Contains mostly old stars. Irregular – No certain shape. Contain many bright young stars and much dust and gas. ...
Ch. 26.5 - (www.ramsey.k12.nj.us).
... Dark Matter = Does not give off radiation & cannot be detected 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 du ...
... Dark Matter = Does not give off radiation & cannot be detected 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 du ...
Dark Matter and Dark Energy
... • The existence of dark matter is inferred indirectly by its gravitational effect. • Inference from observations of – the motions of stars and gas in galaxies, cluster galaxy radial velocities, hot gas properties of clusters, and gravitational lensing of distant, background galaxies by foreground ga ...
... • The existence of dark matter is inferred indirectly by its gravitational effect. • Inference from observations of – the motions of stars and gas in galaxies, cluster galaxy radial velocities, hot gas properties of clusters, and gravitational lensing of distant, background galaxies by foreground ga ...
IOSR Journal of Applied Physics (IOSR-JAP) ISSN: 2278-4861.
... them is happening then whether the phenomena is accelerating or decelerating. This paper is a fiction supported by the basic principles of physics and Nebula hypothesis. Keywords: Nebula Theory, Supernova, Gravity. I. ...
... them is happening then whether the phenomena is accelerating or decelerating. This paper is a fiction supported by the basic principles of physics and Nebula hypothesis. Keywords: Nebula Theory, Supernova, Gravity. I. ...
Which model predicts the youngest age for the universe today?
... measure distances discovered something quite strange ...
... measure distances discovered something quite strange ...
Stars, Galaxies, and the Universe
... • The universe is expanding outward. • Scientists think that the universe will expand forever. ...
... • The universe is expanding outward. • Scientists think that the universe will expand forever. ...
Galaxies and the Universe
... • Cool non-luminous gas • Massive Neutrinos? • WIMP’s (Weakly Interacting Massive Particles) • Magnetic monopoles • Exotic objects: strings, mini-black holes ...
... • Cool non-luminous gas • Massive Neutrinos? • WIMP’s (Weakly Interacting Massive Particles) • Magnetic monopoles • Exotic objects: strings, mini-black holes ...
Ch. 26.5: The Expanding Universe
... Dark Matter = Does not give off radiation & cannot be detected 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 du ...
... Dark Matter = Does not give off radiation & cannot be detected 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 du ...
The Components and Origin of the Universe
... energy expanded from a hot dense mass with an incredibly small volume 2. at first, the universe was hot (10 32 C) and energy went rushing out in all directions energy became cooled enough to become matter 3. matter then cooled enough to form protons, electrons and neutrons (subatomic particles) 4. ...
... energy expanded from a hot dense mass with an incredibly small volume 2. at first, the universe was hot (10 32 C) and energy went rushing out in all directions energy became cooled enough to become matter 3. matter then cooled enough to form protons, electrons and neutrons (subatomic particles) 4. ...
Integrative Studies 410 Our Place in the Universe
... • A relation between the rotation speed of a spiral galaxy and its luminosity • The more mass a galaxy has the brighter it is the faster it rotates the wider the spectral lines are • Measuring rotation speed allows us to estimate luminosity; comparing to observed (apparent) brightness then tell ...
... • A relation between the rotation speed of a spiral galaxy and its luminosity • The more mass a galaxy has the brighter it is the faster it rotates the wider the spectral lines are • Measuring rotation speed allows us to estimate luminosity; comparing to observed (apparent) brightness then tell ...
Concept map-Rubric-final - Berkeley Center for Cosmological
... formed and the universe became transparent; matches black body spectrum from hot early universe •Ratios of elements (nucleosynthesis): predictions of ratios from nuclear physics match observed ratios •Redshift of distant galaxies suggest expansion—Hubble ’s Law (redshift is proportional to distance) ...
... formed and the universe became transparent; matches black body spectrum from hot early universe •Ratios of elements (nucleosynthesis): predictions of ratios from nuclear physics match observed ratios •Redshift of distant galaxies suggest expansion—Hubble ’s Law (redshift is proportional to distance) ...
notes_chapter1 - Auburn University
... The Moon is 1.3 light seconds away. The Sun is 8.3 light minutes (~93 million miles) away A light year measures a distance of 5.87 trillion miles. The visible Universe is > 13 billion light years away ...
... The Moon is 1.3 light seconds away. The Sun is 8.3 light minutes (~93 million miles) away A light year measures a distance of 5.87 trillion miles. The visible Universe is > 13 billion light years away ...
Physical cosmology
Physical cosmology is the study of the largest-scale structures and dynamics of the Universe and is concerned with fundamental questions about its origin, structure, evolution, and ultimate fate. For most of human history, it was a branch of metaphysics and religion. Cosmology as a science originated with the Copernican principle, which implies that celestial bodies obey identical physical laws to those on Earth, and Newtonian mechanics, which first allowed us to understand those physical laws.Physical cosmology, as it is now understood, began with the development in 1915 of Albert Einstein's general theory of relativity, followed by major observational discoveries in the 1920s: first, Edwin Hubble discovered that the universe contains a huge number of external galaxies beyond our own Milky Way; then, work by Vesto Slipher and others showed that the universe is expanding. These advances made it possible to speculate about the origin of the universe, and allowed the establishment of the Big Bang Theory, by Georges Lemaitre, as the leading cosmological model. A few researchers still advocate a handful of alternative cosmologies; however, most cosmologists agree that the Big Bang theory explains the observations better.Dramatic advances in observational cosmology since the 1990s, including the cosmic microwave background, distant supernovae and galaxy redshift surveys, have led to the development of a standard model of cosmology. This model requires the universe to contain large amounts of dark matter and dark energy whose nature is currently not well understood, but the model gives detailed predictions that are in excellent agreement with many diverse observations.Cosmology draws heavily on the work of many disparate areas of research in theoretical and applied physics. Areas relevant to cosmology include particle physics experiments and theory, theoretical and observational astrophysics, general relativity, quantum mechanics, and plasma physics.