Alexa
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Very interesting site. Thanks oookhc. Nice to meet you.
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A pharmaceutical company cannot do anything it wants to. More the company is large, more FDA will survey it's activity. A multi-national has a very powerful Quality Assuarance and Regulatory Affairs dept. So even the Marketing will push for the launch of a new product, if this product is not save for the patients, it will be rejected, no matter the costs for production, packaging and launching.
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Hi Martin, I have to wait till we get more links to add. As you know, an up-dated version takes a lot of space. Alexa
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I'll be interested in a linguistic forum !
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Ability for Human Life on Other Planets
Alexa replied to apollo2011's topic in Astronomy and Cosmology
I would like to give the souce, but unfortunately I've saved that stuff in a word document without refference to the link. If I can remember it soon enough, I'll write it in another post. Sorry. The initial info was for my knowlegde only. -
Ability for Human Life on Other Planets
Alexa replied to apollo2011's topic in Astronomy and Cosmology
A demontration of possible life would be easier on Mars. So I guess you weren't lucky with the choice. Let's we what we have available : Jupiter, Saturn, Uranus and Neptune (the Jovian planets) I'll begin with what we know about their surface and atmosphere. I'm sure you know already all about it, but in my humble opinion, it will be easier to find a solution after a short revision. 1. Jupiter is the fifth planet from the Sun and is the largest one in the solar system. If Jupiter were hollow, more than one thousand Earths could fit inside. It also contains more matter than all of the other planets combined. It has a mass of 1.9 x 1027 kg and is 142,800 kilometers across the equator. The atmosphere is very deep, perhaps comprising the whole planet, and is somewhat like the Sun. It is composed mainly of hydrogen and helium, with small amounts of methane, ammonia, water vapour and other compounds. At great depths within Jupiter, the pressure is so great that the hydrogen atoms are broken up and the electrons are freed so that the resulting atoms consist of bare protons. This produces a state in which the hydrogen becomes metallic. Colourful latitudinal bands, atmospheric clouds and storms illustrate Jupiter's dynamic weather systems. The cloud patterns change within hours or days. The Great Red Spot is a complex storm moving in a counter-clockwise direction. At the outer edge, material appears to rotate in four to six days; near the center, motions are small and nearly random in direction. An array of other smaller storms and eddies can be found through out the banded clouds. Auroral emissions, similar to Earth's northern lights, were observed in the polar regions of Jupiter. The auroral emissions appear to be related to material from Io that spirals along magnetic field lines to fall into Jupiter's atmosphere. Cloud-top lightning bolts, similar to superbolts in Earth's high atmosphere, were also observed. 2. Saturn is the sixth planet from the Sun and is the second largest in the solar system with an equatorial diameter of 119,300 kilometres. Much of what is known about the planet is due to the Voyager explorations in 1980-81. Saturn is visibly flattened at the poles, a result of the very fast rotation of the planet on its axis. Its day is 10 hours, 39 minutes long, and it takes 29.5 Earth years to revolve about the Sun. The atmosphere is primarily composed of hydrogen with small amounts of helium and methane. Saturn is the only planet less dense than water (about 30 percent less). In the unlikely event that a large enough ocean could be found, Saturn would float in it. Saturn's hazy yellow hue is marked by broad atmospheric banding similar to, but fainter than, that found on Jupiter. The wind blows at high speeds on Saturn. Near the equator, it reaches velocities of 500 meters a second. The wind blows mostly in an easterly direction. The strongest winds are found near the equator and velocity falls off uniformly at higher latitudes. At latitudes greater than 35 degrees, winds alternate east and west as latitude increases. 3. Uranus is the seventh planet from the Sun and is the third largest in the solar system. It has an equatorial diameter of 51,800 kilometres and orbits the Sun once every 84.01 Earth years. It has a mean distance from the Sun of 2.87 billion kilometres. The length of a day on Uranus is 17 hours 14 minutes. The atmosphere of Uranus is composed of 83% hydrogen, 15% helium, 2% methane and small amounts of acetylene and other hydrocarbons. Methane in the upper atmosphere absorbs red light, giving Uranus its blue-green color. The atmosphere is arranged into clouds running at constant latitudes, similar to the orientation of the more vivid latitudinal bands seen on Jupiter and Saturn. Winds at mid-latitudes on Uranus blow in the direction of the planet's rotation. These winds blow at velocities of 40 to 160 meters per second. Radio science experiments found winds of about 100 meters per second blowing in the opposite direction at the equator. 4. Neptune is the outermost planet of the gas giants. It has an equatorial diameter of 49,500 kilometres. If Neptune were hollow, it could contain nearly 60 Earths. Neptune orbits the Sun every 165 years. A day on Neptune is 16 hours and 6.7 minutes. The first two thirds of Neptune is composed of a mixture of molten rock, water, liquid ammonia and methane. The outer third is a mixture of heated gases comprised of hydrogen, helium, water and methane. Methane gives Neptune its blue cloud color. Neptune is a dynamic planet with several large, dark spots reminiscent of Jupiter's hurricane-like storms. The largest spot, known as the Great Dark Spot, is about the size of the earth and is similar to the Great Red Spot on Jupiter. Voyager revealed a small, irregularly shaped, eastward-moving cloud scooting around Neptune every 16 hours or so. This scooter as it has been dubbed could be a plume rising above a deeper cloud deck. Long bright clouds, similar to cirrus clouds on Earth, were seen high in Neptune's atmosphere. At low northern latitudes, Voyager captured images of cloud streaks casting their shadows on cloud decks below. The strongest winds on any planet were measured on Neptune. Most of the winds there blow westward, opposite to the rotation of the planet. Near the Great Dark Spot, winds blow up to 2,000 kilometres an hour. I'll take Neptune and try to prove a civilization under water. Not a human one, of course. Anyway, if you have to show some pictures, the blue color would be nice. I hope this can help you. -
A terrorist tries to achive a political or religious goal, not a personal benefit, through the power of intimidation and fear. He doesn't care about the country's laws where he operates. Kinda "I am beyond the law"
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Whatever the technical choices of the roket, SpaceShipOne has very good chances to get the $10 million from Ansari X Prize. I don't think there will be any surprises for Monday during the second flight. Canadian team, da Vinci tries to hide their disappointment and still want to do their launch this month. Another team disappointed will be the Romanian one with Arca, as the first launch was a succes. And there are the others, I think they were 16 teams in competition, with not a very huge budget. Virgin Galactica already plans space tourism in the next years, so in my opinion our vision regarding the space travel will change very soon.
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I have two friends in Florida and I'm really worried about their lives. I don't wanna know anything about Karl.
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Some people are paranoid, violent and ignorant, but to generalize it to entire humanity, it's too much. Ah, the genetic engeneering ! Maybe in about 700 hundreds years, our geneticians will be so advanced to manipulate the genome at the level of a future behaviour. I'm not sure I'll love it.
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All right, Martin. I'll check from time to time to see how the threads evolve and if I can you anything to help you, this will be my pleasure ! See you soon, Alexa
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Hi Martin, I propose to have them by chapters, like you've mentioned them : quantum physics, classical mechanics, etc. For this one I really need you help and all the others interested on the topic. Astronomy is a hobby for me, so it was easy to gather all the infos. I can try to put them together, but I have no idea of the result. Alexa
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Hi Martin, I was looking for a quantum physics thread, when I foung again this one. Do you like to have something like for Astronomy links ? Alexa
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Nope, you didn't learn anything from your suspension ! Too bad for you. You are just a nasty child who need to be kicked into his ass to learn something ! Or maybe you need a lesson life to learn you need to respect the others to get respect in exchange ! You need to know who you offended ? I felt offended by your stupid posts ! As I already said : GROW UP, CHILD !
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USEFUL LINKS Cosmology websites and FAQ given by SFN members Other sites and forums Magazines, Science & Technology Hot topics Animations Vary articles available on the net ====================================================================================== Cosmology website and FAQ given by SFN members : Ned Wright's cosmology website and FAQ. He teaches the undergrad and graduate level courses in cosmology at UCLA and is also one of the team in charge of the WMAP satellite observing the CMB. http://www.astro.ucla.edu/~wright/cosmolog.htm http://www.astro.ucla.edu/~wright/cosmology_faq.html Wendy Freedman and Michael Turner's "Measuring and Understanding the Universe" : http://arxiv.org/astro-ph/0308418 Note : a lot of good astronomy links are graphic rather than verbal, such as images from the HST and computer animations, also Ned Wright has a calculator that lets you calculate from something's red shift how far away it is. Here are good online cosmology calculators : - Siobahn Morgan's : http://www.earth.uni.edu/~morgan/aj...ogy/cosmos.html and Ned Wright's : http://www.astro.ucla.edu/~wright/CosmoCalc.html Professor Murphy's online calculator(Johns Hopkins) : http://fuse.pha.jhu.edu/support/tools/eqtogal.html All you ever want to know about Nebulas: http://astronomynotes.com/evolutn/s1.htm http://blackskies.com/neb101.htm http://observe.arc.nasa.gov/nasa/sp...h_contents.html Here is a nice free star chart that comes out every month and it also comes with a list of objects to look for with binoculars - a large telescope: http://www.skymaps.com/ A good place for science books... Their Starry Night program is quite simple but would at least help you through the apprehensive feeling of not knowing what your look at. It also updates off the web the daily coordinates of several interesting objects each night, for locations all over the globe : http://www.whfreeman.com/astronomy/ Good place for WMAP data : http://lambda.gsfc.nasa.gov/ Trove of stuff on relativity, it helps if you know roughly what you are looking for, and keep in mind that reading it on the web sometimes mean it has not been peer reviewed. Some of the ideas in here (^that link^) are misleading, but its still a very good challenge trying to grip some of the concepts laid out : http://relativity.livingreviews.org/Forms/search.html While at first a ghastly sight to look at the links in the light green are a good place to start surfing to try and skim some knowledge off the information superhighway! http://academics.hamilton.edu/physi.../resources.html If you want star maps and much more for any location and time you can try the following program(A good graphics card with OpenGL driver is a must. (Geforce 4 or later) : http://www.starrynight.com/support/...d&Submit=Search http://www.starrynight.com/download...ownload-Win.zip (56MB) To add stars to mag14 you can find them here. (just copy them in the right directory) http://www.starrynight.com/en/backyardfull.shtml You do need a serial number to make it work You can get a 15 day trial key here: http://www.starrynight.com/digitald...al_download.php (if 15day's isn't long enough to test it there are places to get a less limited key) http://www.extrasolar.net catalogue of extra solar planets including minimum mass, distance, and system http://www.superstringtheory.com/ So what is string theory? For that matter, what the heck are elementary particles? Check out online courses. Black holes. History. Cosmology. Mathematics http://www.bell-labs.com/org/physicalsciences/projects/darkmatter/darkmatter.html Bell Laboratories physical sciences research http://www.fourmilab.ch/earthview/vplanet.html Astrophysical QuickView (AQV) - http://www.dreamscape.com/biology/ This is a collection of informative quick summaries of new press releases dealing with astrophysics, cosmology, astronomy, and space exploration. Atlas of the Universe - http://anzwers.org/free/universe/ Contains 3D maps of the universe zooming out from the nearest stars to the scale of the Milky Way galaxy and onwards to the surrounding superclusters and out to the entire visible universe. Bert Dekker's deep-sky pages - http://www.bert.dekker65.freeler.nl/frset_home.htm Astro-amateurs will find several drawings and observation-reports of deep-sky objects observed through a 6 inch Newton-telescope. BinoSky - best bets for viewing the night sky through binoculars (BinoSky) http://www.lightandmatter.com/binosky/binosky.html A guide to the best bets for viewing the night sky through binoculars. Images and maps on consistent scales, with consistent exposures. Brooks/Cole Astronomy Resource Center - http://www.brookscole.com/astronomy/ Links which are useful to teachers and students of astronomy.Also, an Online Studyguide for the Wadsworth text: Foudations of Astronomy, Fourth edition, by Michael Seeds. CCD Spectroscopy at Mais Observatory - http://members.cts.com/cafe/m/mais/ This site shows what an amateur with only modest equipment can accomplish in the area of astronomical spectroscopy. CMB Astrophysics Research Program (UC Berkeley, LBL) - http://aether.lbl.gov/ Professor George Smoot's group conducts research on the early Universe using the cosmic microwave background radiation (CMB) and other astrophysical sources. These investigations are directed towards realizing a variety of science goals regarding CMB. http://adswww.harvard.edu/ The Astrophysics Data System (ADS) is a NASA-funded project which maintains four bibliographic databases containing more than 3.9 million records: Astronomy and Astrophysics, Instrumentation, Physics and Geophysics, and preprints in Astronomy. The main body of data in the ADS consists of bibliographic records, which are searchable through our Abstract Service query forms, and full-text scans of much of the astronomical literature which can be browsed though our Browse interface. Please note that all abstracts and articles in the ADS are copyrighted by the publisher, and their use is free for personal use only. Extrasolar Planets Encyclopedia - http://www.obspm.fr/encycl/encycl.html This resource, maintained by Jean Schneider (Observatoire de Paris), provides updated information about the search for extrasolar planets. It includes a Catalog of Extrasolar Planets http://lheawww.gsfc.nasa.gov/docs/gamcosray/legr/bacodine/gcn_main.html The GRB Coordinates Network (used to be called BACODINE) system (1) calculates RA,Dec coordinate positions of Gamma Ray Bursts (GRB) detected with BATSE and distributes those positions around the world in real time -- a few seconds! -- so that other instruments can make follow-up observations in other wavebands while the burst is still bursting! (2) distributes locations of GRBs detected by other spacecraft. (3) distributes reports follow-up observations made by ground-based optical and radio observers. These three functions provide a one-stop shopping network for follow-up sites and GRB researchers. How to present rotation curves of Galaxies ? (Galaxy Rotation Curves) - http://www.equidem.de/RCAtlas/ An alternative way to present astronomical data by combining atlas and catalogue features: The Galaxy Wanted Poster. The Halpha and NII spectra of nearby spiral edge-on galaxies reveal next to their red shift velocities their individual kinetic fingerprints. Such velocity slices or rotation curves are correlated to the morphological properties of these objects. Based on a sample of 59 galaxies of the southern hemisphere a small rotation curve atlas has been compiled which allows fast comparison between visual and spectral observations. IMSA Astrophysics Home Page (A high school course in Astrophysics) - http://www.imsa.edu/edu/astro/ This is a one-semester course that embeds technology and the use of the internet into the daily experience of the students. Course materials, assessment tools and philosophy, and curriculum documents are all provided through this site. Interferometry Center of Excellence (ICE, JPL) - http://ice.jpl.nasa.gov/ The Interferometry Center of Excellence (ICE), at JPL, has been established to ensure the development and maintenance of a leading edge capability in optical and near-infrared interferometer astrometry and imaging. Kepler Mission (Searching for Earth-Sized Planets) - http://www.kepler.arc.nasa.gov/ The goal of this NASA satellite mission will be to discover and characterize earth-sized planets in the habitable zone of solar-like stars. Kharkov multi-wave station of solar monitoring (KHASSM) - http://khassm.virtualave.net/ Images from the spectroheliograph of Kharkov Astronomical Observatory (Ukraine). This station is designed to carry out a wide range of astrophysical studies of the Sun in monochromatic light. Latest Supernovae (Supernovae in NGC/IC Galaxies) - http://www.ggw.org/asras/snimages/ Current list of observable Supernovae in NGC and IC galaxies. Microwave Background Anisotropies - Physics - http://background.uchicago.edu A series of online tutorials ranging from beginner to expert covering the theory of cosmic microwave background anisotropies. Photometric redshifts (including HDF and HDFS) - http://astrowww.phys.uvic.ca/grads/gwyn/pz/ Includes a view of the Hubble Deep Fields with access to photometric redshifts of individual galaxies. Planetary Nebulae Observer's Home Page - http://www.blackskies.com/ The web site for almost everything related to observations of Planetary Nebulae. Hundreds of images and over 1000 observing reports in addition to many special articles. Links to other PN related sites and databases. SETI : Star Maps for visual use - http://www.memorybankinc.com/SETI.htm Use the 68 star maps to find the location of the data you are proccessing! SciSpy: Science Data Central - http://www.SciSpy.com/ Resource for science data collections, standards, formats, and tools with online catalog for free and commercial downloadable software, specializing in HDF and other formats Solar Terrestrial Activity Report - http://dxlc.com/solar/ The Solar Terrestrial Activity Report has an overview of current solar activity as well as this activity's effect on Earth's geomagnetic field. The report is primarily aimed at radio listeners. Solar cycle and solar wind information is part of the report. Space Astrometry at The University of Texas - http://clyde.as.utexas.edu/SpAstNEW/index.html Present and future results of space astrometry carried out by researchers associated with The University of Texas McDonald Observatory and the Department of Astronomy Sun, Moon & Earth Applet - http://www.jgiesen.de/SME/ This interactive Java applet displays the positions of sun and moon for any date, time and location on the horizon, and on a world map with day and night regions. The times of rise and setting, the declination, the Greenwich Hour Angle of sun and moon, the equation of time and more data are computed. TOPbase at CDS : The Opacity Project (TOPbase) - http://cdsweb.u-strasbg.fr/topbase.html TOPbase is a read-only database system specially designed for general use of the atomic data derived by the Opacity Project. It contains energy levels, f-values and photo ionization cross sections for astrophysical abundant elements. Wavelength-Oriented Microwave Background Analysis Team (WOMBAT) - http://astron.berkeley.edu/wombat/ WOMBAT is dedicated to understanding sources of microwave foreground emission and providing the cosmology community with estimates of foreground emission as well as uncertainties in those estimates. What color are the stars? - http://www.vendian.org/mncharity/dir3/starcolor/ Chromaticity and rgb pixel color are derived from spectra for various stellar types/classes. Providing physically motivated colors for astronomy presentations. Wise Observatory Monthly Astronomical Calendar and Schedule - http://wise-obs.tau.ac.il/~eran/Wise/wise_calen.html Generate Monthly Gregorian Calendar with optional Moon Phase, Julian day, Local Sidereal Time, Sun Rise, Sun Set, Moon Rise, Moon Set, Moon R.A. and Dec. Generate Wise Observatory schedule with observer name and instrument. X-rays from Hot Massive Stars (XMEGA) - http://lheawww.gsfc.nasa.gov/users/corcoran/xmega/xmega.html This site is a central location for scientists interested in the problem of X-ray emission from hot, massive stars. It contains a list of current observational projects and planned observations. Schedules of currently planned X-ray observations are also included for those interested in providing ground-based coordinated observations. ______________________________________________________________________________________________ Other sites and forums : Time travel Portal – an open discussion on time travel : http://timetravelportal.com/viewtopic.php?t=294 Amateur astronomy and telescope building forum: http://www.njnightsky.com/ Futura Science Generation ; sub-forum Sciences de l’Univers (French) : http://www.futura-sciences.com/ Agence Spatiale Européenne: http://www.esrin.esa.it/ Etats Unis: NASA http://www.nasa.gov http://www.space.com/ Agence spatiale Russe http://www.rosaviakosmos.ru/english/eindex.htm http://www.astronomytoday.com Astronomy Today has articles on astronomy, cosmology and space exploration, with a regularly updated sky guide plus the latest space news. David Darling's Astrobiology Page (Astrobiology) - http://www.daviddarling.info/ Astrobiology discussions, links and books. A site with a strong emphasis on astrobiology and the search for extraterrestrial life and intelligence, reflecting author David Darling current areas of interest. In addition to a description of Darling s books, including his latest work, The Extraterrestrial Encyclopedia, the site contains hundreds of links to other sites connected with astrobiology, extrasolar planets, SETI and other topics related to alien life, FAQ s, a forum and a guestbook. UK Students for the Exploration and Development of Space (UKSEDS) - http://www.uk.seds.org/ UKSEDS is the UK's national student space society. Take a look at our web pages for more information on our activities and how to join. The web site also contains information resources related to space in the UK and around the world. ________________________________________________________________________________________ Magazines, Science & Technology: http://www.astronomy.com/ http://www.astrobio.net/news/ __________________________________________________________________________ Hot topics : ALL ABOUT DARK ENERGY : - Dark Energy: Astronomers Still 'Clueless' About Mystery Force Pushing Galaxies Apart, by Andrew Chaikin http://www.space.com/scienceastronomy/astronomy/cosmic_darknrg_020115-1.html - Astrophysics Challenged By Dark Energy Finding,By Ray Villard http://www.space.com/scienceastronomy/generalscience/darkenergy_folo_010410.html - Galaxies Made of Nothing? New Theory of Mysterious Dark Matter By Robert Roy Britt http://www.space.com/scienceastronomy/astronomy/dark_galaxies_010105-1.html - Scientists Map Dark Matter, Prove Einstein Right, By Maia Weinstock http://www.space.com/news/cosmic_shear_000512.html - Scientists Closer to Solving Dark Matter Mystery, By Patricia Reaney http://www.space.com/scienceastronomy/astronomy/dark_matter_wg.html - Feeling Around for Dark Matter By Matthew Fordahl -AP Science Writer http://www.space.com/scienceastronomy/generalscience/dark_matter_000405_wg.html - 'Groundbreaking' Discovery: First Direct Observation of Dark Matter By Robert Roy Britt http://www.space.com/scienceastronomy/astronomy/missing_matter_found_010322-1.html - Understanding Dark Matter and Light Energy, By Robert Roy Britt http://www.space.com/scienceastronomy/astronomy/dark_matter_sidebar_010105.html ALL ABOUT BLACK HOLES: - Black Holes Could Be Major Power Source,By Deborah Zabarenko http://www.space.com/scienceastronomy/astronomy/blackholes_energy_wg.html Several articles about black holes, most recent stories at top http://www.space.com/scienceastronomy/headlines-4.html _______________________________________________________________________ Animations : Note : this section should be develloped soon. What it would look like to someone who is falling into a black hole http://casa.colorado.edu/~ajsh/schw.shtml Balloon universe expands then collapses http://www.astro.ucla.edu/~wright/balloon0.html Why the particle horizon is 3X what you naively expect based on age of universe http://www.astro.ucla.edu/~wright/photons_outrun.html Microlensing (gravity bends light from things behind) http://www.astro.ucla.edu/~wright/microlensing.html More lensing, by a cluster of galaxies http://www.astro.ucla.edu/~wright/cluster-lensing.html How the bumps on the Microwave Background occurred: animation of what "Equal Power on All Scales" means http://www.astro.ucla.edu/~wright/CMB-MN-03/epas.html _________________________________________________________________________ Vary articles available on the net NEW An overview of Cosmology, by Julien Lesgourgues http://arxiv.org/abs/astro-ph/0409426 Here you can learn about the Hubble law, The Universe Expansion from Newtonian Gravity, General relativity and the Friemann-Lemaître model, The curvature of space-time, Bending of light in the expanding Universe, The Friedmann law , The Standard Cosmological Model, The Hot Big Bang scenario, The Cold and Hot Big Bang alternatives, The discovery of the Cosmic Microwave Background, The Thermal history of the Universe, Dark Matter, Measuring the cosmological parameters, Age of the Universe, The Inflationary Universe, Problems with the Standard Cosmological Model, etc. Here you have a good link which is a star map with the Microwave Background dipole temperature variation superimposed http://aether.lbl.gov/www/projects/u2/ Here's some pedagogical links for cosmology: This article by Lineweaver (he was one of the team in charge of COBE an earlier CMB satellite observatory) The second link has a PDF version that is more readable but takes more time to download. Lineweaver's essay has been made into a chapter of a book now in press called "The New Cosmology" (world scientific 2004) "Inflation and the Cosmic Microwave Background" http://nedwww.ipac.caltech.edu/leve...r_contents.html http://arxiv.org/astro-ph/0305179 New paper of Edward Witten in latest issue of Nature link to online copy (for subscribers) is in the 3 June post of Woit's blog http://www.math.columbia.edu/~woit/blog/ paper involves dark energy (which is an astronomy/cosmology topic!) and concerns dark energy, the Higgs mass, and electroweak symmetry breaking. http://www.astro.spbu.ru/staff/dikarev/valery/ering.html The modeled E ring of Saturn is presented. The page is related to Cassini project, and introduces the research of the faint circumplanetary dust complexes to everybody. Closer To Truth - http://www.closertotruth.com/topics/universemeaning/index.html Closer To Truth television series and Web site brings together leading scientists and scholars to debate how the Universe began, and how it may possibly end. Coded Aperture Imaging in High-Energy Astronomy - http://lheawww.gsfc.nasa.gov/docs/cai/coded.html Information about coded aperture imaging as applied in X- and gamma-ray astronomy: - introduction to the principle - specific details about instruments of the past, present and proposed future - bibliography. Colorado Model of the Local Interstellar Cloud (LIC) - http://casa.colorado.edu/~sredfiel/ColoradoLIC.html This web site provides information on the the modelling of the Local Interstellar Medium (LISM) by the Cool Star Group at the University of Colorado in Boulder. A three-dimensional model of the Local Interstellar Cloud (LIC) is provided, as well as a column density calculator based on the LIC model. Comet Observation Home Page - http://encke.jpl.nasa.gov/ Provides information on current (bright) comets including recent observations and ephemeridies. Images and light curves of current and past comets are also available Comets and Meteor Showers - http://comets.amsmeteors.org/ This site gives the complete text to the 1988 book Meteor Showers: A Descriptive Catalog, as well as recent meteor shower observations. The site also posts a wealth of comet information from news of recent discoveries, finder charts, and ephemerides, to extensive historical information on individual comets. There is a European mirror site. Cosmic-Connection.com - http://cosmic-connection.com/ A resource for amateur astronomers and space enthusiasts -- worldwide. Astronomy links to international resources, current space science events, news and weather, glossaries, multi-media and educational sites for children with onsite language translation tool.
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Hi Martin, I think the place for the last link about comology is in vary section. I'll add NEW for it. I recommend PDF format. For those who want to print it, there are 62 pages. You can learn about the Hubble law, The Universe Expansion from Newtonian Gravity, General relativity and the Friemann-Lemaître model, The curvature of space-time, Bending of light in the expanding Universe, The Friedmann law , The Standard Cosmological Model, The Hot Big Bang scenario, The Cold and Hot Big Bang alternatives, The discovery of the Cosmic Microwave Background, The Thermal history of the Universe, Dark Matter, Measuring the cosmological parameters, Age of the Universe, The Inflationary Universe, Problems with the Standard Cosmological Model, etc. Do you think you have some time to develop the animation section, Martin ? I'm afraid, I do not have the time for it. I'm senior member on another forum and I really like the atmosphere there. I'll be around only for you as you are the only one who make me feel welcome on this forum. Alexa
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This is proffesional negligence or ignorance. That nurse had a natural reflex to brush her hair back, but she didn't realize the glove is not enough for the protection of her patient.
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I drink a lot, but I do not have the appetite. I can forget about my breakfast, but not the coffee. Same thing at dinner. I do need a lot of concentration and attention for the job I have, so I suppose I am dependant of my daily dose of caffeine. I have tried to reduce or replace it, but no chance. Maybe if I chance the job for something less stressful.
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Originally Posted by bloodhound well how many languages do u guys speak . used to speak , understand fluently or taken lessons? I' m fluent in French, English, Romanian. I'm not bad in Italian. I'm afraid I forgot most of my German and Latin.
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Dark matter research (Edinburgh conf. this week)
Alexa replied to Martin's topic in Astronomy and Cosmology
Hi Martin, I have no information about the conf. at Edinbourgh, but here you have the last article on space. com September 14 Dark Matter Draws Galaxies onto Collision Course A nearby cluster of galaxies is being pulled around by an underlying superstructure of mysterious dark matter, according to new evidence from NASA's Chandra X-ray Observatory. Scientists don't know what dark matter is, but they think most of the universe is made of the stuff, because there isn't enough regular matter to account for the gravity that binds galaxies. The dark matter is thought to be concentrated in long filaments. Where the filaments intersect, regular matter clumps and galaxy clusters form. A Chandra survey of the Fornax galaxy cluster revealed a vast, swept-back cloud of hot gas near the center of the cluster. The hot gas cloud, which is several hundred thousand light years in length, is moving rapidly through a larger, less dense cloud of gas, astronomers suspect. Other observations suggest an unseen, large structure is collapsing and drawing everything toward a common center of gravity. "At a relatively nearby distance of about 60 million light-years, the Fornax cluster represents a crucial laboratory for studying the interplay of galaxies, hot gas and dark matter as the cluster evolves." said Caleb Scharf of Columbia University in New York. "What we are seeing could be associated directly with the intergalactic gas surrounding a very large scale structure that stretches over millions of light years." Scientists don't know what dark matter is made of and they've never seen it. But indirect observations like this help them constrain its properties. The infalling galaxy group is about 3 million light-years from the cluster core, so any collision will be a few billion years off. The findings were presented last week at an American Astronomical Society meeting in New Orleans. -- SPACE.com Staff -
I agree an imigrant should learn the official language of the country. I put in question only the part of shooting somebody because of a linguistic barrier. That's a radical mesure, if you didn't mean to use it in a figurative expression.