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         Astrophysics:     more books (100)
  1. Astrophysical Plasmas and Fluids (Astrophysics and Space Science Library) by Vinod Krishan, 1999-01-31
  2. How Dark Matter Created Dark Energy and the Sun: An Astrophysics Detective Story by Jerome Drexler, 2003-12-15
  3. An Introduction to the Science of Cosmology (Series in Astronomy and Astrophysics) by Derek Raine, E.G. Thomas, 2002-08-01
  4. Comprehending and Decoding the Cosmos: Discovering Solutions to Over a Dozen Cosmic Mysteries by Utilizing Dark Matter Relationism, Cosmology, and Astrophysics by Jerome Drexler, 2006-05-22
  5. Eclipsing Binary Stars: Modeling and Analysis (Astronomy and Astrophysics Library) by Josef Kallrath, Eugene F. Milone, 2009-08-24
  6. The Hubble Wars: Astrophysics Meets Astropolitics in the Two-Billion-Dollar Struggle over the Hubble Space Telescope, With a New Preface by Eric J. Chaisson, 1998-05-03
  7. Source Book in Astronomy and Astrophysics, 1900-1975 (Source Books in the History of the Sciences) by Owen Gingerich, Kenneth Lang, 1979-12-27
  8. Asteroseismology (Astronomy and Astrophysics Library) by C. Aerts, J. Christensen-Dalsgaard, et all 2010-02-19
  9. Theoretical Astrophysics: Volume 2, Stars and Stellar Systems by T. Padmanabhan, 2001-04-30
  10. Globular Cluster Systems (Cambridge Astrophysics) by Keith M. Ashman, Stephen E. Zepf, 2008-12-11
  11. Galactic Dynamics: (Second Edition) (Princeton Series in Astrophysics) by James Binney, Scott Tremaine, 2008-01-07
  12. Methods of Celestial Mechanics: Volume II: Application to Planetary System, Geodynamics and Satellite Geodesy (Astronomy and Astrophysics Library) by Gerhard Beutler, 2004-12-22
  13. Cataclysmic Variable Stars (Cambridge Astrophysics) by Brian Warner, 2003-09-18
  14. Radio Recombination Lines: Their Physics and Astronomical Applications (Astrophysics and Space Science Library) by M.A. Gordon, R.L. Sorochenko, 2009-01-31

81. ASPIRE - Home
Site dedicated to helping teachers with lessons in physics and astrophysics by giving computer activities that help show how physical models work.
HOME STUDENTS Lessons Ask A Scientist Internships Science Fair Projects ... Quizzes TEACHERS Lessons Training Outreach News ... Links The ASPIRE Lab is now one of the most innovative and interactive science education websites available on the Internet. You will find not only fun interactive labs, but well designed and produced curriculum content, created by teachers for teachers. The powerful combination of inquiry-based content, along with interactive, hands-on labs provides a powerful visualization tool for you and your students to use. Best of all, the ASPIRE Lab is free! *New*
  • rewritten with Flash
We are happy to announce the new and improved activity! We invite teachers to begin using this activity as a Beta release. We think that it's ready to go, but there may be improvements that can still be made. We invite teachers to provide feedback on this new lab to Thanks so much for your support of the ASPIRE website. Featured Lessons Title Description Bread Board project A basic black box breadboard project. This project will create a programmable LED or series of LEDs which can then be programmed to change color. Basic electronics, programming and concepts about persistence of vision are covered in this lab

82. Home | Astrophysics
Areas of interest, seminars, events, and staff.
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Rose Center for Earth and Space The Department of Astrophysics is located in the Rose Center for Earth and Space at the American Museum of Natural History We conduct astrophysical research and provide scientific support for outreach activities and exhibits in the Museum.
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83. Centre For Astrophysics And Supercomputing
astrophysics, supercomputing, virtual reality, astrotour, and astronomy online.
Skip to Content Centre for Astrophysics and Supercomputing

84. Astro-Physics Inc.
Makes telescopes, mounts and accessories for observers and astrophotographers. Includes product descriptions, prices, photo gallery, and printable order form.

85. Smithsonian Astrophysical Observatory
Astrophysical research facility located in Cambridge, Massachusetts.
Contacts CfA Home HCO Home SAO Home ... Press Room Resources for . . . Scientists Software Users The Public Amateur Astronomers CfA Staff (Intranet) The Smithsonian Astrophysical Observatory (SAO) is a "research institute" of the Smithsonian Institution . It is joined with the Harvard College Observatory (HCO) to form the Harvard-Smithsonian Center for Astrophysics (CfA). Because these research activities share Harvard and Smithsonian staff and resources, the links at this website will take you to information posted on the "CfA" pages. Weekly Science Updates October 29, 2010 Coronal Mass Ejections The corona of the sun is the hot (over a million kelvin), gaseous outer region of its atmosphere. The corona is threaded by intense magnetic fields that extend upwards from the surface in loops that are twisted and sheared by the convective stirrings of the underlying dense atmosphere. Read More... October 22, 2010 X-Ray Observations of an Extrasolar Planetary System The majority of extra-solar planets (about 278 of them) are more massive than Jupiter. About 20% of this majority group orbit their stars at a distances of less than one-tenth of an astronomical unit. Read More...

86. Network Generator
Generates astrophysical reaction rates online using an extended database.

87. CU Boulder: Department Of Astrophysical And Planetary Sciences
Department of Astrophysical and Planetary Sciences. Includes research and faculty.
The Department of Astrophysical and Planetary Sciences at the University of Colorado graduate students , and 135 undergraduate majors. Read the latest about us in the Fall 2010 Department Newsletter! (1.1 MB PDF Download)
APS News
  • Artist's Rendering of CCAT The CU-Boulder-involved CCAT (Cornell-Caltech-Atacama Telescope) is a $110 million telescope in Chile that, when built, will be used to probe distant galaxies and stellar nurseries. It has been named as the top construction priority for mid-sized, ground-based telescopes by the National Research Council for the coming decade. Read more ... Rosalba Perna is the winner of the 2010 SIGRAV Prize. SIGRAV is the acronym for the Italian Society of General Relativity and Gravitational Physics. The prize is given every 2 years to an Italian astrophysicist below the age of 40 who has distinguished himself/herself for work related to gravity. Rosalba is being honored for her work on neutron stars, black holes, and gravitational lensing. This is considered to be one of the most prestigious Italian prizes in astrophysics. Rosalba will receive the prize at the SIGRAV 2010 conference in October, where she will also deliver an invited plenary talk. Juri Toomre has been named as the 2010 winner of the Hazel Barnes Prize. The Hazel Barnes Prize is the most prestigious faculty award presented by the University of Colorado at Boulder. It was established in 1991 by former Chancellor James Corbridge in honor of Philosophy Professor Emerita Hazel Barnes to recognize "the enriching interrelationship between teaching and research." Recipients of this award are regionally and nationally recognized, tenured faculty members who are not only outstanding teachers, but who also have distinguished records in research and scholarship.

88. FLASH AMR Reacting Hydrodynamics
The FLASH code is a reacting hydrodynamics code with adaptive mesh refinement for general astrophysical hydrodynamics problems.

89. Space Physics Textbook
A free online textbook on space physics.

90. Temporal Annex
Information mostly on the fourth dimension and theoretical physics.

91. Dyson Sphere
A list of frequently asked questions with answers.
Dyson Sphere FAQ
by Anders Sandberg with ideas and additions from:
  • What is a Dyson Sphere?
  • Who is Dyson?
  • Was Dyson First?
  • Why build a Dyson sphere? ...
  • What has been written about dyson Spheres?
  • What is a Dyson Sphere?
  • The Dyson sphere (or Dyson shell) was originally proposed in 1959 by the astronomer Freeman Dyson in "Search for Artificial Stellar Sources of Infrared Radiation" in Science as a way for an advanced civilisation to utilise all of the energy radiated by their sun. It is an artificial sphere the size of an planetary orbit. The sphere would consist of a shell of solar collectors or habitats around the star, so that all (or at least a significant amount) energy will hit a receiving surface where it can be used. This would create a huge living space and gather enormous amounts of energy. A Dyson sphere in the solar system, with a radius of one AU would have a surface area of at least 2.72e17 km^2, around 600 million times the surface area of the Earth. The sun has a energy output of around 4e26 W, of which most would be available to do useful work. The original proposal simply assumed there would be enough solar collectors around the star to absorb the starlight, not that they would form a continuous shell. Rather, the shell would consist of independently orbiting structures, around a million kilometres thick and containing more than 1e5 objects. But various science fiction authors seem to have misinterpreted the concept to mean a solid shell enclosing the star, usually having an inhabitable surface on the inside, and this idea was so compelling that it has been the main use of the term in science fiction. The earliest appearance of this version seems to be Robert Silverberg's novel
  • 92. Software — LCA Portal
    ZEUS is a venerable astrophysical hydrodynamics and MHD code that has been used to investigate a wide variety of astrophysical problems. The latest version includes gas hydrodynamics, ideal MHD, implicit flux-limited radiation diffusion (FLD), self gravity, and multispecies advection.
    @import url(; Skip to content. Skip to navigation Search Site
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    This is a list of the software developed in the LCA. enzo jbPerf ZEUS-MP/2 Currently listing 9 projects with 13 releases. The latest releases in each category. To see all projects in a specific category, click "Show all".
    Current Software
    enzo 2.0 enzo 1.5 ZEUS-MP/2 2.1.2 ZEUS-MP/2 2.1 enzo 1.0.1 Show all
    Legacy Software
    ZEUS 3D 3.4.1 ZEUS 2D 203 MGMPI 1.0.8

    93. Above The Skies, An Exploration Into Our Universe Through Animated Spectroscopy
    A description at the layman level about the applications of spectroscopy in the investigation of the Solar System, with interactive diagrams

    94. "Red Shift By Photon Decay" (Michael Lewis) And "Lossy Light Propagation In Ethe
    Author explains how Hubble s red shift of starlight spectra results from photon decay, proportional to traveled distance.
    On Occams Razor (use the simplest model ) and the return of Common Sense. Hence no Perpetuüm Mobile , including foton travel for billions of years : Universal Friction , Diffusion and Finite Lifetime
    Re: Dayton Miller experiments repeated (re Michelson-Morley) In a gravity field: Curving Space .versus. Modulating Ether density. The Electric (Plasma) Cosmos ... Beyond Gravity ... 1. Lossy Light propagation in Ether, after all?
    by Nico Benschop (+ sci.math/.physics discussions)
    Red shift = diffusion of fotons ( no Perpetuüm Mobile
    : Summary 1 2. The Hubble Red Shift by Photon Decay:
    A sensible explanation , by Michael Lewis
    Using Maxwell's EM-field equations with diffusion term.
    : Summary 2
    and h derived from Photon Decay Rate. ... 3. The Redshift is quantized (William Setterfield)
    so Hubble's Redshift is no Doppler effect, and the Big-Bang is in question. by dr. Paul Marmet
    From: IEEE Transactions on Plasma Science, V20, N6, pp958-964, 1992.
    4. Is the electron a photon with toroidal topology? [*]
    by Martin van der Mark, J.G. Williamson

    95. Physics
    Teaching notes on celestial mechanics, classical mechanics, and stellar atmospheres.
    Physics topics
    by Dr. J. B. Tatum


    Stellar Atmospheres

    Celestial Mechanics
    Welcome to the page.

    Please use the menu on the left to access the texts. (Each chapter is a separate PDF.)
    download Adobe Acrobat Reader to view PDFs

    Note: Dial-up modem users may find that some online chapters take a while to load.
    For viewing offline, the texts can be downloaded below as PDF files.
    Stellar Atmospheres (ZIP) (TAR.GZ) Celestial Mechanics (ZIP) (TAR.GZ) Classical Mechanics (ZIP) (TAR.GZ) Geometric Optics (ZIP) (TAR.GZ) Electricity and Magnetism (ZIP) (TAR.GZ) Heat and Thermodynamics (ZIP) (TAR.GZ) Planetary Photometry (ZIP) (TAR.GZ) Hit to this page: Counter provided by Search PSIgate, the physical sciences information gateway

    96. Titius-Bode Law
    Overview of the Titius-Bode Law.
    Fibonacci numbers and the Pascal Triangle Titius-Bode Law The Titius-Bode Law or Rule is the observation that orbits of planets in the solar system follow a simple arithmetic rule quite closely. It was discovered in 1766 by Johann Daniel Titius and "published" (without attribution) in 1772 by Johann Elert Bode, thus the name.
    Bode was greatly interested in the new planet discovered by William Herschel in March 1781. While Herschel always referred to this planet as "Georgium Sidus" to honor King George III of England, Bode proposed the name "Uranus" which was soon adopted by the rest of the world. Bode collected virtually all observations of this planet by various astronomers, published many of them in the Astronomisches Jahrbuch, and found that Uranus had been observed before its discovery on a number of occasions, among them an observation of Tobias Mayer from 1756 and earliest by Flamsteed, in December 1690, cataloged as "star" 34 Tauri. In 1801 Bode published his famous and popular star atlas, Uranographia, where he reproduced or introduced a number of new and strange constellaitons, including "Officina Typographica," "Apparatus Chemica," "Globus Aerostaticus," "Honores Frederici," "Felis," and "Custos Messium," all of which have not survived and vanished from modern star charts.

    97. Freeman J. Dyson, Gravity Is Cool, Or, Why Our Universe Is Hospitable To Life
    Text of the 1999 Oppenheimer lecture at UC Berkeley given by professor Freeman Dyson on the origin of life and other subjects.
    Documents menu
    Gravity is Cool, or, Why our Universe is Hospitable to Life
    By Freeman J. Dyson, Institute for Advanced Study, Princeton, New Jersey, Oppenheimer lecture, given at the University of California, Berkeley, California, 9 March 2000
    1. Gravity is Cool
    First I would like to say thankyou to Professor Chemla and to everyone else who was involved in inviting me here. Thankyou for your hospitality, and for giving me the chance to meet and talk with your students and faculty. I am sorry that my visit is so brief that I met only a few of you. The existence of life depends crucially on the fact that time has these two faces, the quiet and the violent, cleanly separated from each other. The violent face created the stuff that we are made of. The quiet face sustains us and allows us to evolve. We need to understand the reasons why these faces exist. There are two main reasons, one superficial and one fundamental. The superficial reason is that the universe is extravagantly large. Distances are so great that accidental collisions hardly ever happen. This is why the sun with its family of planets can run like a perfect clock, with orbits undisturbed by close encounters with alien sta,rs, for billions of years. We are protected from cataclysms by the sheer size of the interstellar spaces. The best popular account of the science that explains how the universe can be friendly to life is a book

    98. Welcome To The Electric Universe!
    Physics knows four forces; 20th-century scientists were convinced that one of those, the electric force, played no macroscopic role in the Universe; site explains why that is incorrect.
    Welcome to the Electric Universe Gravity attracts. But only the electric force can repulse huge masses in jets, solar wind, eruptions. It also forms matter to filaments. Filaments and jets are in the fifth state of matter which can be by orders more energetic than plasma.
    The model Electric Universe is a totally new and contradiction-free astrophysics. In plasma-stars the heat motion pushes the light electrons faster outwards than inwards. The much slower ions remain in and near the core. The photon-pressure and the neutrinos also make the core positive and the surface negative.
    Find out more of the 4th force inside this website and read and download exiting papers or search for other links to similar content websites.
    Once signed-up you may also be able to post your script and share your toughts on our website with an average of 3.500 hits per day.
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    here here

    Compares earth orbit to other planets using the Astronomical Unit as a measurement.
    The Titius-Bode Number Sequence Deciphered
    by Joseph Conklin
    PART I
    Introduction: The Astronomical Unit (AU)
    I n the 18th century, two astronomers, Johann Titius and Johann Bode, reported a numerical sequence into which the sizes of the planetary orbits fit. By using the size of the earth's orbit as a standard, called an Astronomical Unit, or AU, astronomers recalculate the other orbital sizes in proportion to it. Titius and Bode noticed the following pattern- they started with 0, then took 3 and began doubling- 0, 3, 6, 12, 24, 48, 96, 192, 384, 768. Then they added 4 to each number and divided by 10, and the result approximated the planetary orbits in AU's. Table 1 shows the average distances from the sun of the 9 planets and the asteroid belt between Mars and Jupiter.
    (Note that these are modern figures. In Titius' and Bode's time, the asteroid belt, Uranus, Neptune and Pluto were as yet undiscovered.)
    TABLE 1
    Planet Distance from Sun in miles AU Titius-Bode Rule Mercury Venus Earth Mars Asteroid Belt Jupiter Saturn Uranus Neptune Pluto Textbooks usually remark on the Titius-Bode sequence casually, noting that some astronomers dismiss it as a chance mathematical pattern. In any event, note the following points:

    100. Photon Evolution In Red Shift
    Michael Lewis provides an equation describing the Hubble red shift light decay curve using existing mathematics.

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