... Orbiting a Black Hole . ... Credit Copyright: Robert Nemiroff ( MTU ) Explanation: What would it look like to orbit a black hole? ... For one thing, the entire sky would be visible , since even stars behind the black hole would have their light bent to the observer's eye. For another, the sky near the black hole would appear significantly distorted , with more and more images of the entire sky visible increasingly near the black hole. ... Publications with keywords: black hole . ...

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• Journal "Peremennye Zvezdy"
• XWare > APOD

... Tonight's Sky . ... Sky this Month . ... solar system . ... milky way . ... The Sky This Week: April 1 - 10 . ... Sky this Week . ... Observe the Solar System . Astronomy for Kids . ... Tour the Solar System . ... In what direction and at what speed is the solar system moving through the Milky Way? ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ... Join Astronomy for America's 2017 total solar eclipse! ...

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• With the Moon's terminator moving almost 10 mph (16 km/h) across its equator,
• With the Moon gradually moving away from Earth, what will happen to people and
• Web Extra: Watch as black holes collide | Astronomy.com

... Although many of the images are used for teacher-driven activities, students do have the opportunity to work with scientists on original research projects. ... The primary goal is to have teachers experience astronomy research and then to bring the research data into their classrooms via the internet. ... They also learn how to process their data, build a solar telescope to take home to their classrooms, and learn background information from astronomers in each of the three research areas. ...

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• ASP: Black Holes: An Introductory Resource List
• ASP: Black Holes
• ASP: AstroCappella - A Musical Exploration of the Universe

EMBARGOED UNTIL: 9:20 AM CST, January 6, 1999 CONTACT: John Biretta Space Telecsope Science Institute, Baltimore, MD (Phone: (410) 338-4917; Internet: biretta@stsci.edu) HUBBLE DETECTS FASTER-THAN-LIGHT MOTION IN GALAXY M87 Astronomers reported today discovering clouds which appear to move many times faster than the speed of light, shooting out from the region of a black hole at the center of the M87 galaxy. ... It's an illusion created by the finite speed of light and rapid motion," Biretta said. ...

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• Active galaxies and black holes
• HST Observer Monthly
• Moving Targets: Ephemeris and Tracking Accuracies

Lectures . ... Home Lectures Lecture Series 2011-2012 Lecture Series 2011-2012 ? тАЬAt Last: Seeing Supermassive Black Holes Shred StarsтАЭ ? Glennys Farrar . ... Lecture Series 2011-2012 . ... Lecture Series . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

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• Lecture Series 2015-2016 ? Amateur Astronomers Association of New York
• Articles ? Amateur Astronomers Association of New York
• Astronomy Workshop: Observing Variable Stars from the City ? February 15, 2015

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

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• The Scale of the Solar System
• Magnetic Reversals and Moving Continents
• Planetary Magnetism

... Observers looking at an object that is moving away from them see light that has a longer wavelength than it had when it was emitted (a redshift), while observers looking at an approaching source see light that is shifted to shorter wavelength (a blueshift). ... By measuring the amount of the shift to the red, we can determine that the bright galaxy is moving away at 3,000 km/sec, which is 1 percent of the speed of light, because its lines are shifted in wavelength by 1 percent to the red. ... Part 2...

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• X-ray binaries with relativistic jets -- microquasars

Blackholes Forum Message . Forums: . ... Black Holes And RedShift . ... Perhaps black holes really are the reproductive means of the universe.Could the black hole of a Quasar red-shift the electromagnetic energy trying to escape it? ... Perhaps black holes treat electromagnetic energy the same way. ... No one really knows enough about Quasars and black holes to say for sure but ask yourself this: Why would all the Quasars in the universe be moving away from the Milky Way? ... www.astronomy.net . ...

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• The River Model Of Black Holes - an Astronomy Net Blackholes2 Forum Message
• Quicksand As Black Hole Model? - an Astronomy Net Blackholes Forum Message
• Erie County Mobile Observers Group (pa), AstroGuide Listing

Stellarium 0.12.3 . ... Classes . ... SpaceShipObserver Class Reference . An observer which moves from from one position to another one and/or from one planet to another one. ... SpaceShipObserver (const StelLocation &startLoc, const StelLocation &target, double transitSeconds=1.f) . ... Get whether the life of this observer is over, and therefore that it should be changed to the next one provided by the getNextObserver() method. ... Get the next observer to use once the life of this one is over. ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Colin Johnston . ... Milky Way . Stars . ... Monthly Sky Notes . ... June . ... This red supergiant is the brightest star in the constellation Scorpius and is of awesome size. ... Returning to Vega (which will be the pole star in about 12 000 years from now), follow an imaginary line between it and Arcturus, this line will cross two more constellations, faint and sprawling Hercules and that celestial smile Corona Borealis. ...

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• Rings Around an Asteroid | Astronotes
• Clyde Tombaugh and the Mysterious Satellite | Astronotes
• Where and When to See Comet PANSTARRS | Astronotes

... 2013 July 1 . Orbiting a Black Hole . ... Explanation: What would it look like to orbit a black hole? ... For another, the sky near the black hole would appear significantly distorted , with more and more images of the entire sky visible increasingly near the black hole. ... Orbiting a black hole, as shown in the above scientifically-accurate computer-created illustrative video, will show stars that pass nearly directly behind the black hole as zipping around rapidly near the Einstein ring. ...

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• APOD: January 4, 1997 - A Star Where Photons Orbit
• APOD: November 26, 1995 - A Star Where Photons Orbit
• APOD: September 13, 1997 - Kepler Discovers How Planets Move

... Bad Astronomy . ... Bitesize Astronomy . ... The center of the elliptical galaxy M84 was observed using STIS to see if there was a giant black hole there (a wide view of the galaxy is seen on the left). ... Their huge gravity accelerates matter up to tremendous speeds, but only closer in to the actual black hole. The great resolution of Hubble combined with the spectrographic qualities of STIS allow it to look very close in to the center of the galaxy and look at the matter nearest the black hole. ...

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• Phil Plait's Bad Astronomy: Misconceptions
• Phil Plait's Bad Astronomy: Bad TV
• Phil Plait's Bad Astronomy: Mad Science

... Up: Data Analysis and Processing Techniques . ... Also, a method for quality control of CCD observations is suggested. ... Everyone who observes a celestial object using a CCD detects moving celestial objects as a ``by product''. ... We hope that our investigations may be useful for near-Earth space control and also for searches of the moving celestial objects through analysis of old and new CCD frames obtained at any amateur or professional astronomical observatory. ...

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• SVDFIT: An IRAF Task for Eigenvector Sky Subtraction

... The hotter the gas, the faster they move, and the more energy each of them holds. The free ions and electrons in a plasma behave the same way. Knowing the temperature of the high atmosphere of Earth, or that of the Sun, we can calculate energies expected of ions and electrons found there. However, ions and electrons actually observed in space are often much , much more energetic, and may move at a respectable fraction of the velocity of light (300,000 km/sec or 186,000 miles/sec). ...

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• The Dynamo Process
• Black aurora [Oulu]
• The Solar Wind

... Contact us . ... PPTA timeline . ... Editing this wiki . ... In this animation from Swinburne Astronomy Productions, Vikram Ravi describes how pulsar timing can be used to determine how black holes evolve . This gallery contains some animations of binary pulsars and their evolution, and the formation of gravitational waves from the merge of two super-massive black holes . ... A Sky & Telescope article on the time frame of expected gravitational wave detection based on black hole merger rates . ...

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• The void at the end of the Universe
• Merging Black Holes in Galaxies: Galaxy Evolution, AGN and Gravitational Waves
• ATNF Colloquium

... Subject: Lectures, Awesome Universe, Conjunction, ISS, Geminids, IAA NY Party, weblinks . Date: 4 December 2012 15:09:24 GMT . ... 4.?аVenus, Mercury and Moon: conjunction. ... 7.?аIAA New Year Party. ... http://www.dailymail.co.uk/sciencetech/article-2239715/NASA-scientists-develop-nuclear-powered-probe-deep-space-exploration.html . ... http://www.dailymail.co.uk/sciencetech/article-2235460/A-planet-born-Astronomers-capture-super-Jupiter-challenging-ideas-formations-new-worlds.html . ...

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• http://star.arm.ac.uk/nibulletin/2015/Apr21.html
• Armagh Observatory
• Strong Gravity in the Vicinity of Supermassive Black Holes - by Eamon Scullion,

... We have measured this "redshift" for the pink black holes, and allowed for it in our calculations. ... We see this effect in the emission from gas around these pink black holes, but it is far too small an effect to account for the pinkness. Thus the swirling motions of gas around or into the black holes cannot produc the colour. ... At first we thought that these things were normal blue black holes hidden behind clouds of interstellar dust, that absorbed the blue light and made them appear pink. ...

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• The High-Z SN Search Description
• Research Interests
• Orbits

... About 10% of the time is allocated to moving the telescope to the zenith and exchanging the spectrographic cartridges. ... Focus telescope (open-loop)* . ... TOTAL TIME (seconds) . ... This assumes two 60 second arc exposures and two 55 second readouts. ... Otherwise, the arc exposure will likely consist of a 30 second integration followed by a quick 28 second readout, half the normal time. ... The flat-field exposure can be read out with a quick 28 second readout, half the normal time. ...

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• default
• ARCSAT Observers Nightlog Form
• Astrophysical Research Consortium - Apache Point Observatory

... Under certain conditions, like those in the nucleus of a QSO, all atoms can be made to emit light at particular wavelengths. ... If that source is approaching the observer, the wave is squashed up onto itself making the wavelength shorter. ... This is redshift. ... You can see how the section of the QSO spectrum which we observe changes with redshift. ... We then see how far we had to slide the observed spectrum along the scale to make it match and that is the objects redshift. ... The 2QZ team . ...

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Astronomy suffers from the `Static Illusion' - because astronomical changes usually occur over intervals much longer than a human lifetime they appear static. This illusion affects our understanding of how astronomical objects work. ... Observations at the 1/10th arcsecond level with HST and near-infrared adaptive optics on ground based telescopes are beginning to create movies of `astronomy in motion'. ... Proto-star HH-30 expanding jet HST.. Young binary, XZ Tau, expanding `bubbles' HST.. ...

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• Period Criteria
• The AstroStat Slog black box
• SAOtng Colormap Considerations