society journal - Auckland Astronomical Society
... threaten our electricity dependent civilisation. It explained how a solar flare sends charged particles and radiation out into space. The Earth’s atmosphere and magnetic fields are usually adequate to protect us from these, but not completely during big events. The 1989 Montreal blackout, which was ...
... threaten our electricity dependent civilisation. It explained how a solar flare sends charged particles and radiation out into space. The Earth’s atmosphere and magnetic fields are usually adequate to protect us from these, but not completely during big events. The 1989 Montreal blackout, which was ...
The solar system rotates around the sun due to the sun`s
... When we look into the universe and see that all galaxies have a red shift. What does this tell us about the universe? A ...
... When we look into the universe and see that all galaxies have a red shift. What does this tell us about the universe? A ...
The Milky Way Galaxy
... If all the mass there really were only that of visible matter, its gravity would not be enough to retain the hot gas, which would evaporate rapidly. Since the gas is there, there must be more gravity, hence dark matter. ...
... If all the mass there really were only that of visible matter, its gravity would not be enough to retain the hot gas, which would evaporate rapidly. Since the gas is there, there must be more gravity, hence dark matter. ...
Lecture 2: ppt, 5 MB
... The New Force Is Called “Dark Energy” Dark energy accounts for 73% of the content of the universe Dark matter accounts for 23% The content we’re familiar with is only 4% ...
... The New Force Is Called “Dark Energy” Dark energy accounts for 73% of the content of the universe Dark matter accounts for 23% The content we’re familiar with is only 4% ...
Multiple Choice, continued
... • Sometimes, nebulas collapse to form groups of hundreds or thousands of stars called clusters. ...
... • Sometimes, nebulas collapse to form groups of hundreds or thousands of stars called clusters. ...
Primordial planets, comets and moons foster life in the cosmos
... cosmology during the plasma epoch, soon after mass became the dominant cosmological component at time ~ 1011 seconds after the big bang event over energy. From HGD, 97% of the mass at that time is non-baryonic, with the weakly collisional properties and mass of neutrinos (green). The rest (yellow) i ...
... cosmology during the plasma epoch, soon after mass became the dominant cosmological component at time ~ 1011 seconds after the big bang event over energy. From HGD, 97% of the mass at that time is non-baryonic, with the weakly collisional properties and mass of neutrinos (green). The rest (yellow) i ...
ppt
... – The Sun and the other bodies orbit around a common center of mass – The Sun is so massive that it is very close to the center of mass and moves very little – Orbits are elliptical, but very slightly so ...
... – The Sun and the other bodies orbit around a common center of mass – The Sun is so massive that it is very close to the center of mass and moves very little – Orbits are elliptical, but very slightly so ...
neutron star - Livonia Public Schools
... 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 ...
AST1100 Lecture Notes
... One candidate to WDM are the neutrinos although these actually belong to baryonic matter. Neutrinos are very light particles which are associated with the electron and other elementary particles. When an electron is created in a particle collision, a neutrino is normally created in the same collisio ...
... One candidate to WDM are the neutrinos although these actually belong to baryonic matter. Neutrinos are very light particles which are associated with the electron and other elementary particles. When an electron is created in a particle collision, a neutrino is normally created in the same collisio ...
PDF sample
... billion atoms of oxygen, which gives some idea of how small each one is. All of them, together with the carbon atoms in your skin, and indeed everything else on Earth, were cooked in a star some 5 billion years ago. So you are made of stuff that is as old as the planet, one-third as old as the unive ...
... billion atoms of oxygen, which gives some idea of how small each one is. All of them, together with the carbon atoms in your skin, and indeed everything else on Earth, were cooked in a star some 5 billion years ago. So you are made of stuff that is as old as the planet, one-third as old as the unive ...
SpfFin - Academic Program Pages
... The universe is not really expanding, but light loses energy as it travels, and photons fade out after a certain distance. 27. Which of the following scenarios for our universe is most likely, based on recent results from very bright and very distant type Ia supernovae? We live in a "flat" universe ...
... The universe is not really expanding, but light loses energy as it travels, and photons fade out after a certain distance. 27. Which of the following scenarios for our universe is most likely, based on recent results from very bright and very distant type Ia supernovae? We live in a "flat" universe ...
The Scale of the Realms of the Universe
... The Universe is very, very big. But just how big it is and how we fit into the grand scheme can be quite difficult for a person to grasp. The distances and sizes are so far beyond our everyday experience. Many activities have been created to help gain a sense of the scale of the Solar System by buil ...
... The Universe is very, very big. But just how big it is and how we fit into the grand scheme can be quite difficult for a person to grasp. The distances and sizes are so far beyond our everyday experience. Many activities have been created to help gain a sense of the scale of the Solar System by buil ...
The Hubble Mission - Indiana University Astronomy
... of the universe began to speed up four to six billion years ago, when the Dark Energy's repulsive force began to overcome the attractive force of gravity over cosmic distances Supernovae measured with Hubble hint that Dark Energy's repulsive force is constant over cosmic time and so could be consist ...
... of the universe began to speed up four to six billion years ago, when the Dark Energy's repulsive force began to overcome the attractive force of gravity over cosmic distances Supernovae measured with Hubble hint that Dark Energy's repulsive force is constant over cosmic time and so could be consist ...
A n A n c i e n... How Astronomers Know the Vast Scale of Cosmic Time
... universe (as we will describe in a moment), they did not hope or wish for it to have a particular age, and try to make their results come out according to those wishes. Instead, they did the best they could to understand the evidence nature provides and then reported what their observations had told ...
... universe (as we will describe in a moment), they did not hope or wish for it to have a particular age, and try to make their results come out according to those wishes. Instead, they did the best they could to understand the evidence nature provides and then reported what their observations had told ...
Dark Matter Burners
... Answer: by measuring the gravitational redshift and temperature (or luminosity) If found, a population of dwarf dark matter burners near Sgr A*, would trace the dark matter ...
... Answer: by measuring the gravitational redshift and temperature (or luminosity) If found, a population of dwarf dark matter burners near Sgr A*, would trace the dark matter ...
PHYSICS 1500 - ASTRONOMY TOTAL: 100 marks Section A Please
... clouds of dense gas orbiting the Milky Way. small satellite galaxies orbiting the Milky Way. clouds of dense gas currently passing by the Milky Way. emission nebulae in the galactic halo. emission nebulae in the nuclear bulge. ...
... clouds of dense gas orbiting the Milky Way. small satellite galaxies orbiting the Milky Way. clouds of dense gas currently passing by the Milky Way. emission nebulae in the galactic halo. emission nebulae in the nuclear bulge. ...
Cosmology with GMRT
... – Apply to a single object (optical results are averages over large redshift range) – Not subject to the same systematics – Currently probe a complementary redshift range ...
... – Apply to a single object (optical results are averages over large redshift range) – Not subject to the same systematics – Currently probe a complementary redshift range ...
A05715 ANY CALCULATOR Page 1 TURN OVER School of Physics
... Use Wien’s law to explain quantitatively in what way the spectrum of the light from the Sun, with a surface temperature of about 6000K, would differ from that of a B star. ...
... Use Wien’s law to explain quantitatively in what way the spectrum of the light from the Sun, with a surface temperature of about 6000K, would differ from that of a B star. ...
Word version of Episode 701
... Temperature, relative speed to Earth, rate of spin, orbital speed (and hence mass), and what they are made from can all be deduced by analysis of their electromagnetic radiation. Knowing what stars ‘are’, that those twinkling pin points of light have a structure, and that our Sun is made of the same ...
... Temperature, relative speed to Earth, rate of spin, orbital speed (and hence mass), and what they are made from can all be deduced by analysis of their electromagnetic radiation. Knowing what stars ‘are’, that those twinkling pin points of light have a structure, and that our Sun is made of the same ...
Observing stars - Teaching Advanced Physics
... Temperature, relative speed to Earth, rate of spin, orbital speed (and hence mass), and what they are made from can all be deduced by analysis of their electromagnetic radiation. Knowing what stars ‘are’, that those twinkling pin points of light have a structure, and that our Sun is made of the same ...
... Temperature, relative speed to Earth, rate of spin, orbital speed (and hence mass), and what they are made from can all be deduced by analysis of their electromagnetic radiation. Knowing what stars ‘are’, that those twinkling pin points of light have a structure, and that our Sun is made of the same ...
Expanding Universe and Big Bang
... a) The Doppler Effect is observed in sound and light. For sound, the apparent change in frequency as a source moves towards or away from a stationary observer should be investigated. The Doppler Effect causes similar shifts in wavelengths of light. The light from objects moving away from us is shift ...
... a) The Doppler Effect is observed in sound and light. For sound, the apparent change in frequency as a source moves towards or away from a stationary observer should be investigated. The Doppler Effect causes similar shifts in wavelengths of light. The light from objects moving away from us is shift ...
nucleosynthesis_oct28
... ionization equation of Saha. Her work was of fundamental importance in the development of the field of stellar atmospheres. She discovered that all stars have very similar relative chemical abundances with hydrogen and helium comprising 99% by number. ...
... ionization equation of Saha. Her work was of fundamental importance in the development of the field of stellar atmospheres. She discovered that all stars have very similar relative chemical abundances with hydrogen and helium comprising 99% by number. ...
Model answer
... 4-bShort sight: It is the vision defect through which near objects can be seen clearly but far objects seen distorted. The image formed in front of the retina.-------Correction by using concave lens . ...
... 4-bShort sight: It is the vision defect through which near objects can be seen clearly but far objects seen distorted. The image formed in front of the retina.-------Correction by using concave lens . ...
HighRedshiftGalaxies
... the lower panel of this figure can be used to improve the mass estimate. Importantly, such a technique for determine accurate stellar masses can then be applied to all galaxies, regular or peculiar, irrespective of their dynamical state and over a range in redshift. The technique can be considered a ...
... the lower panel of this figure can be used to improve the mass estimate. Importantly, such a technique for determine accurate stellar masses can then be applied to all galaxies, regular or peculiar, irrespective of their dynamical state and over a range in redshift. The technique can be considered a ...
Atoms and Starlight Generating light
... collisions between atoms and photons of light change photon energies result is continuous spectrum if object has no intrinsic colour (blackbody) spectrum depends only on its temperature hotter = bluer and brighter ...
... collisions between atoms and photons of light change photon energies result is continuous spectrum if object has no intrinsic colour (blackbody) spectrum depends only on its temperature hotter = bluer and brighter ...
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.