Kalam Cosmological Argument
... (1), since on the sub-atomic level events are said to be uncaused. In the same way, certain theories of cosmic origins are interpreted as showing that the whole universe could have sprung into being out of the sub-atomic vacuum or even out of nothingness. Thus the universe is said to be the proverbi ...
... (1), since on the sub-atomic level events are said to be uncaused. In the same way, certain theories of cosmic origins are interpreted as showing that the whole universe could have sprung into being out of the sub-atomic vacuum or even out of nothingness. Thus the universe is said to be the proverbi ...
Day of Planetaria 2011 at Astronomical centre
... This planetarium show will surely be interesting for the youngest family members and the parents will have the opportunity to find out more about the Earth motion and the season's change. Learn about the northern sky by familiarize and finding Polaris (The North Star) and three constellations: Ursa ...
... This planetarium show will surely be interesting for the youngest family members and the parents will have the opportunity to find out more about the Earth motion and the season's change. Learn about the northern sky by familiarize and finding Polaris (The North Star) and three constellations: Ursa ...
Galaxies at High Redshift Encyclopedia of Astronomy & Astrophysics eaa.iop.org Mauro Giavalisco
... also means a younger universe. Recent measurements of the Hubble constant place its value in the range between 60 and 70 km s−1 Mpc−1 (1 Mpc = 3.1 × 1022 m). This corresponds to an age of the universe between 10 and 15 Gyr (1 Gyr = 109 yr). Aresult of the cosmic expansion and of the finite speed of ...
... also means a younger universe. Recent measurements of the Hubble constant place its value in the range between 60 and 70 km s−1 Mpc−1 (1 Mpc = 3.1 × 1022 m). This corresponds to an age of the universe between 10 and 15 Gyr (1 Gyr = 109 yr). Aresult of the cosmic expansion and of the finite speed of ...
Full text - terrapub
... ecliptic latitude. Furthermore, it can be shown that all the wavelength channels of MIRS have a similar dependence on the latitude, indicating that the spectral shape does not change appreciably with the ecliptic latitude. The spectral shapes of two typical regions (12.◦ 5 < β < 20.◦ 0, 71.◦ 3 < β < ...
... ecliptic latitude. Furthermore, it can be shown that all the wavelength channels of MIRS have a similar dependence on the latitude, indicating that the spectral shape does not change appreciably with the ecliptic latitude. The spectral shapes of two typical regions (12.◦ 5 < β < 20.◦ 0, 71.◦ 3 < β < ...
Wide-field surveys and astronomical discovery space
... the backbone of astronomy, and the main engine of discovery, as we have mapped the sky at every possible wavelength. Surveys are an efficient use of resources. They are important as a fundamental resource; to map intrinsically large structures; to gain the necessary statistics to address some proble ...
... the backbone of astronomy, and the main engine of discovery, as we have mapped the sky at every possible wavelength. Surveys are an efficient use of resources. They are important as a fundamental resource; to map intrinsically large structures; to gain the necessary statistics to address some proble ...
arXiv:astro-ph/9701131v1 18 Jan 1997
... stratified radiative cores. Second, as recognized by Salpeter (1982), full convection precludes the buildup of composition gradients which are ultimately responsible (in part) for a star’s ascent up the red giant branch. The lowest mass stars burn all their hydrogen into helium over an η = 13 time ...
... stratified radiative cores. Second, as recognized by Salpeter (1982), full convection precludes the buildup of composition gradients which are ultimately responsible (in part) for a star’s ascent up the red giant branch. The lowest mass stars burn all their hydrogen into helium over an η = 13 time ...
Contents
... Most atoms in the Sun, and other stars, are said to be ionized because the intense temperatures have stripped off most of their electrons. Electron scattering occurs when a photon encounters an electron and causes it to vibrate or oscillate. The energy stolen from the photon in this process is re-ra ...
... Most atoms in the Sun, and other stars, are said to be ionized because the intense temperatures have stripped off most of their electrons. Electron scattering occurs when a photon encounters an electron and causes it to vibrate or oscillate. The energy stolen from the photon in this process is re-ra ...
Cold galaxies at low and high z
... gravity, which on large scales turns gravity into a repulsive force (the ‘cosmological repulsion’) This extra term, denoted L, behaves like the energy density of the vacuum, hence ‘dark energy’ ...
... gravity, which on large scales turns gravity into a repulsive force (the ‘cosmological repulsion’) This extra term, denoted L, behaves like the energy density of the vacuum, hence ‘dark energy’ ...
Comparing an Analytical Cascade Spectrum of High Energy Gamma
... since the charged component of the cascade1 can be deflected. Furthermore, the cascade is dependent on the presence of background photons in order to initiate and evolve. The universe is populated by a series of photon populations, the major of which are the cosmic microwave background (CMB) as well ...
... since the charged component of the cascade1 can be deflected. Furthermore, the cascade is dependent on the presence of background photons in order to initiate and evolve. The universe is populated by a series of photon populations, the major of which are the cosmic microwave background (CMB) as well ...
The Flow of Energy Out of the Sun
... The program that you will use today is designed to teach you how photons travel from the core of the Sun to the surface and how they interact with matter on their way into space. They interact in two general regions with two different effects: 1. The solar atmosphere is a thin layer of gas that make ...
... The program that you will use today is designed to teach you how photons travel from the core of the Sun to the surface and how they interact with matter on their way into space. They interact in two general regions with two different effects: 1. The solar atmosphere is a thin layer of gas that make ...
The Flow of Energy Out of the Sun
... Most atoms in the Sun, and other stars, are said to be ionized because the intense temperatures have stripped off most of their electrons. Electron scattering occurs when a photon encounters an electron and causes it to vibrate or oscillate. The energy stolen from the photon in this process is re-ra ...
... Most atoms in the Sun, and other stars, are said to be ionized because the intense temperatures have stripped off most of their electrons. Electron scattering occurs when a photon encounters an electron and causes it to vibrate or oscillate. The energy stolen from the photon in this process is re-ra ...
The Theory of Everything: The Origin and Fate of the Universe
... One may say that time had a beginning at the big bang, in the sense that earlier times simply could not be defined. It should be emphasized that this beginning in time is very different from those that had been considered previously. In an unchanging universe, a beginning in time is something that h ...
... One may say that time had a beginning at the big bang, in the sense that earlier times simply could not be defined. It should be emphasized that this beginning in time is very different from those that had been considered previously. In an unchanging universe, a beginning in time is something that h ...
Homogeneity and isotropy in the 2MASS Photometric Redshift
... Fractal dimensions quantify different moments of the counts-in-spheres in a point distribution. The most commonly used of them is the so-called correlation dimension D2 (r), which quantifies the filling factor of spheres of different radii centred on points in the distribution. Using this kind of ob ...
... Fractal dimensions quantify different moments of the counts-in-spheres in a point distribution. The most commonly used of them is the so-called correlation dimension D2 (r), which quantifies the filling factor of spheres of different radii centred on points in the distribution. Using this kind of ob ...
Spacephysics - The summary
... product of the spations resulting in symmetrical spaces of forces and charges; and matter: crystalization product of spations, originating from virtual hyperstructures of energy (quantums) in symmetrical spaces). The name of my theory is TOEM (theory of everything and more), "Babenberg universe" or ...
... product of the spations resulting in symmetrical spaces of forces and charges; and matter: crystalization product of spations, originating from virtual hyperstructures of energy (quantums) in symmetrical spaces). The name of my theory is TOEM (theory of everything and more), "Babenberg universe" or ...
Cosmology with the shear
... snapshots of increasing redshift. The matter distribution of each snapshot was projected onto a lens plane located at the snapshot redshift. Note that the boxes are just small enough for the cosmic evolution during the light travel time through a box to be negligible. This ensures that the matter di ...
... snapshots of increasing redshift. The matter distribution of each snapshot was projected onto a lens plane located at the snapshot redshift. Note that the boxes are just small enough for the cosmic evolution during the light travel time through a box to be negligible. This ensures that the matter di ...
A 6% measurement of the Hubble parameter at ζ ∼ 0.45: direct
... It is important to underline that the main strength of this method is that it relies on a differential approach. On the one hand, it should be noted that the relevant quantities in this approach are the relative ages dt, which have the advantage of factorizing out systematic effects inherent to abso ...
... It is important to underline that the main strength of this method is that it relies on a differential approach. On the one hand, it should be noted that the relevant quantities in this approach are the relative ages dt, which have the advantage of factorizing out systematic effects inherent to abso ...
TheFlowOfEnergyOutOf..
... Most atoms in the Sun, and other stars, are said to be ionized because the intense temperatures have stripped off most of their electrons. Electron scattering occurs when a photon encounters an electron and causes it to vibrate or oscillate. The energy stolen from the photon in this process is re-ra ...
... Most atoms in the Sun, and other stars, are said to be ionized because the intense temperatures have stripped off most of their electrons. Electron scattering occurs when a photon encounters an electron and causes it to vibrate or oscillate. The energy stolen from the photon in this process is re-ra ...
The Flow of Energy Out of the Sun
... Most atoms in the Sun, and other stars, are said to be ionized because the intense temperatures have stripped off most of their electrons. Electron scattering occurs when a photon encounters an electron and causes it to vibrate or oscillate. The energy stolen from the photon in this process is re-ra ...
... Most atoms in the Sun, and other stars, are said to be ionized because the intense temperatures have stripped off most of their electrons. Electron scattering occurs when a photon encounters an electron and causes it to vibrate or oscillate. The energy stolen from the photon in this process is re-ra ...
Periodic Universal Gravitation Resulting in the Phenomenon of Dark
... contraction speed approaches infinity, and the space at the end of the periodic universe contracts to a tiny quantum space [7]. When observing two galaxies or two stars in one galaxy in the contracting section, their distance is decreasing. According to the research result of NASA, our galaxy will c ...
... contraction speed approaches infinity, and the space at the end of the periodic universe contracts to a tiny quantum space [7]. When observing two galaxies or two stars in one galaxy in the contracting section, their distance is decreasing. According to the research result of NASA, our galaxy will c ...
The Universe - the Scientia Review
... Bang Theory. Scientists believe that all matter, life, and energy began as a singularity. This zone is believed to exist at the center of a black hole as exAn artistic interpretation of the Big tremely tiny, infinitely dense, and Bang molten hot particle (one for every black hole). Many people belie ...
... Bang Theory. Scientists believe that all matter, life, and energy began as a singularity. This zone is believed to exist at the center of a black hole as exAn artistic interpretation of the Big tremely tiny, infinitely dense, and Bang molten hot particle (one for every black hole). Many people belie ...
early universe was highly frozen?!
... Electromagnetic wave travels at the speed of Light (3x108 meter/second) and the permittivity of electric charge, permeability of magnetic flux are assumed as zero. Einstein Sir formulated relativity theory that no object can travel more than the speed of light. But as per case study recent OPERA obs ...
... Electromagnetic wave travels at the speed of Light (3x108 meter/second) and the permittivity of electric charge, permeability of magnetic flux are assumed as zero. Einstein Sir formulated relativity theory that no object can travel more than the speed of light. But as per case study recent OPERA obs ...
OGU - What`s Out Tonight?
... galaxies, there is little gas and dust to form new stars. A second type of galaxy is the spiral, which resembles its name. The galaxy that we live in, the Milky Way Galaxy, is a spiral. Spirals are flatter looking, like a dish. They have round bulged centers out of which curved arms radiate. Spirals ...
... galaxies, there is little gas and dust to form new stars. A second type of galaxy is the spiral, which resembles its name. The galaxy that we live in, the Milky Way Galaxy, is a spiral. Spirals are flatter looking, like a dish. They have round bulged centers out of which curved arms radiate. Spirals ...
Cosmic microwave background
The cosmic microwave background (CMB) is the thermal radiation left over from the time of recombination in Big Bang cosmology. In older literature, the CMB is also variously known as cosmic microwave background radiation (CMBR) or ""relic radiation."" The CMB is a cosmic background radiation that is fundamental to observational cosmology because it is the oldest light in the universe, dating to the epoch of recombination. With a traditional optical telescope, the space between stars and galaxies (the background) is completely dark. However, a sufficiently sensitive radio telescope shows a faint background glow, almost exactly the same in all directions, that is not associated with any star, galaxy, or other object. This glow is strongest in the microwave region of the radio spectrum. The accidental discovery of CMB in 1964 by American radio astronomers Arno Penzias and Robert Wilson was the culmination of work initiated in the 1940s, and earned the discoverers the 1978 Nobel Prize.The CMB is a snapshot of the oldest light in our Universe, imprinted on the sky when the Universe was just 380,000 years old. It shows tiny temperature fluctuations that correspond to regions of slightly different densities, representing the seeds of all future structure: the stars and galaxies of today.The CMB is well explained as radiation left over from an early stage in the development of the universe, and its discovery is considered a landmark test of the Big Bang model of the universe. When the universe was young, before the formation of stars and planets, it was denser, much hotter, and filled with a uniform glow from a white-hot fog of hydrogen plasma. As the universe expanded, both the plasma and the radiation filling it grew cooler. When the universe cooled enough, protons and electrons combined to form neutral atoms. These atoms could no longer absorb the thermal radiation, and so the universe became transparent instead of being an opaque fog. Cosmologists refer to the time period when neutral atoms first formed as the recombination epoch, and the event shortly afterwards when photons started to travel freely through space rather than constantly being scattered by electrons and protons in plasma is referred to as photon decoupling. The photons that existed at the time of photon decoupling have been propagating ever since, though growing fainter and less energetic, since the expansion of space causes their wavelength to increase over time (and wavelength is inversely proportional to energy according to Planck's relation). This is the source of the alternative term relic radiation. The surface of last scattering refers to the set of points in space at the right distance from us so that we are now receiving photons originally emitted from those points at the time of photon decoupling.Precise measurements of the CMB are critical to cosmology, since any proposed model of the universe must explain this radiation. The CMB has a thermal black body spectrum at a temperature of 7000272548000000000♠2.72548±0.00057 K. The spectral radiance dEν/dν peaks at 160.2 GHz, in the microwave range of frequencies. (Alternatively if spectral radiance is defined as dEλ/dλ then the peak wavelength is 1.063 mm.) The glow is very nearly uniform in all directions, but the tiny residual variations show a very specific pattern, the same as that expected of a fairly uniformly distributed hot gas that has expanded to the current size of the universe. In particular, the spectral radiance at different angles of observation in the sky contains small anisotropies, or irregularities, which vary with the size of the region examined. They have been measured in detail, and match what would be expected if small thermal variations, generated by quantum fluctuations of matter in a very tiny space, had expanded to the size of the observable universe we see today. This is a very active field of study, with scientists seeking both better data (for example, the Planck spacecraft) and better interpretations of the initial conditions of expansion. Although many different processes might produce the general form of a black body spectrum, no model other than the Big Bang has yet explained the fluctuations. As a result, most cosmologists consider the Big Bang model of the universe to be the best explanation for the CMB.The high degree of uniformity throughout the observable universe and its faint but measured anisotropy lend strong support for the Big Bang model in general and the ΛCDM (""Lambda Cold Dark Matter"") model in particular. Moreover, the fluctuations are coherent on angular scales that are larger than the apparent cosmological horizon at recombination. Either such coherence is acausally fine-tuned, or cosmic inflation occurred.