I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

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• Artist's impression of the asteroid Lutetia making a close approach to a planet
• Exoplanet Caught on the Move | ESO
• ESO - Observing Planetary Systems II

... Bad Astronomy . Misconceptions . ... Bad Astronomy : The Moon only shows one face to us because it is not rotating. Better astronomy : The Moon only shows one face because it is rotating, once every time it revolves around the Earth. ... Place the Moon model on the table about 30 centimeters (one foot) away with the X facing the Earth model. ... You'll see that to keep the X facing the Earth model, you have to rotate the Moon model as it goes around the Earth model . ... 2008 Phil Plait. ...

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• Phil Plait's Bad Astronomy: Bitesize Astronomy
• Phil Plait's Bad Astronomy: Mad Science
• Phil Plait's Bad Astronomy: Bitesize Tour of the Solar System

... Planets . ... Earth Satellites . ... Looking in the direction of the constellation Cygnus the Swan and launched by NASA in 2009 is the Kepler Space Observatory.Many previous missions searching for exoplanets mainly detected large giant planets, like large hot Jupiters (it is easier to detect larger planets).However KeplerтАЩs main objective is to search for much smaller planets located in a habitable zone which is not too close nor too far from their star; planets which may be just like our Earth. ...

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• Kepler-10c: the First Mega-Earth | Astronotes
• Exoplanets | Astronotes
• The Blue Planet | Astronotes

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Armagh Observatory, 11 June 2015: Armagh Observatory reports that the next two weeks will provide an interesting opportunity to observe the brightest planet, Venus, and the largest planet, Jupiter, as they move towards one another in the evening twilight. ... The image shows the sky view towards the West at around 11pm on 20 June 2015. ... Professor Mark E. Bailey, Armagh Observatory, College Hill, Armagh BT61 9DG. ...

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• Terry Mosely's Bulletins
• ASTRONOMICAL PHENOMENA FROM MARS
• Why this is interesting: reasons for which astronomers get very excited around

... The concept of continuous solar wind developed in 1950's. First, Biermann (1951, 1957) observed comet tails as they passed close to the Sun , and explained the observed tail deflection by a continuous flux of protons from the Sun. Then Parker (1959) showed that the solar corona must expand, and called the outward streaming coronal gas 'solar wind'. ... The expanding solar wind drags also the solar magnetic field outward, forming what is called the interplanetary magnetic field (IMF) . ...

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• The Sky Above Us
• Newton's theory of "Universal Gravitation"
• Lagrangian Points

3) Planets and Brown Dwarfs . ... By its nature, this method is most sensitive to massive planets orbiting close to their stars. ... That means that some of the more massive extrasolar planets could actually be brown dwarfs (although the statistics of the finds suggest that most of them are not). ... Another possible difference between brown dwarfs and massive planets is how they are born. ... They would base the fundamental definition on the mode of formation: a planet is built from planetesimals. ...

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• ASP: The Music of the New Spheres?
• ASP: Guest Observer
• ASP: Miranda: A Jigsaw Puzzle World

... The planet in orbit around 51 Peg has, according to theoretical models, moved into its current position from farther away and its atmosphere may therefore be strongly evaporating. The molecules released by the upper parts of the atmosphere must be rapidly ionized and could form an envelope around the planet. If the planet passes in front of the star, this envelope is in favorable geometric conditions (the inclination angle of the orbit is close to 90?) which allow it to occult the star. ...

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• Research Interests
• Martin Dominik
• HST Observer Monthly

... More on 51 Peg: . The discovery of a Jupiter--mass planet in orbit around the solar--type star 51Peg has been reported by Michel Mayor and Didier Queloz (Geneva Observatory) on October 6th at the 9th Cambridge workshop on "cool stars, stellar systems, and the sun" held at Florence (Italy). ... Recall that the measurements of radial velocity only yield v sin i which in turn gives us M sin i. For most values of i, sin i will be greater than 0.5 and this gives a mass estimate of 0.5 Jupiter masses. ...

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• Dark Matter in the Universe

... August 14, 1995 . Mercury: Closest Planet to the Sun . ... Explanation: This picture was compiled from images taken by the NASA spacecraft Mariner 10 which flew by the planet three times in 1974. Mercury is the closest planet to the Sun , the second hottest planet (Venus gets hotter), and the second smallest planet (Pluto is smaller). Mercury rotates so slowly that one day there - "day" meaning the normal time it takes from sunset to sunset - lasts 176 days on Earth . ...

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• APOD: 2010 October 8 - Two Planet Opposition
• APOD: December 23, 1998 - Ring Around the Galaxy
• GALILEO READY FOR CLOSE FLYBY OF JUPITER'S BIGGEST MOON

Astronomy Picture of the Day . Mercury: Closest Planet to the Sun . ... 14.08.1995 . ... Credit: NASA , Mariner 10 Explanation: This picture was compiled from images taken by the NASA spacecraft Mariner 10 which flew by the planet three times in 1974. ... Mercury rotates so slowly that one day there - "day" meaning the normal time it takes from sunset to sunset - lasts 176 days on Earth . ... August 1995 . ... U. Based on Astronomy Picture Of the Day . Publications with keywords: Mercury . ...

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• Астронет > Mercury: Closest Planet to the Sun
• XWare > APOD

This image zooms into a small portion of Kepler's full field of view - an expansive, 100-square-degree patch of sky in our Milky Way Galaxy. At the center of the field is a star with a known "hot Jupiter" planet, named "TrES-2," zipping closely around it every 2.5 days. ... The area pictured is 1/1000 of Kepler's full field of view, and shows hundreds of stars at the very edge of the constellation Cygnus. ...

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• Would it be possible to find a moon around an extrasolar planet? If so, how? |
• Everything around us is spinning: particles, planets, stars, galaxies. Why not
• Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets,

The stability of planetary systems after stellar mass loss : Prospects for White Dwarf planets and pollution Alexander James Mustill1*, Dimitri Veras2, Eva Villaver3, Amy Bonsor4, Boris GДnsicke2, Mark Wyatt 1 2 5 Lund Observatory ... 1TL, United Kingdom 5 Institute of Astronomy, University of Cambridge, Madingley Road, CB3 9ET, UK *alex@astro.lu.se Stars lose mass as they evolve to become white dwarfs ( WDs ), and this mass loss can induce ...

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• Astrophysics Group Research and Instrumentation

Next: The Interpolation Process Up: Calibration Previous: An alternative approach to . Given the observing time and frequency, task plplt plots the expected visibility function for a planet. You will most likely want to check this visibility function before observing and discovering that the planet is resolved out! NOTE that mfboot and plplt do not include the effect of the ATCA's primary beam - the planet is implicitly (and silently) assumed to be small compared with the primary beam. ...

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• Australia Telescope National Facility
• ATNF Daily Astronomy Picture
• June 2015 ATUC meeting | Australia Telescope National Facility

... 9a. Earth orbits Sun? . ... 10a. Scale of Solar Sys. ... If the mean distance of Earth from the Sun is 1 AU ("Astronomical Unit"), then that of Venus is 0.723 AU, of Mercury 0.387 AU and that of Mars is 1.524 AU. ... By noting (1) where on the Sun's disk is the crossing seen, (2) timing its duration at two far-apart points on Earth, and (3) comparing the times, one can calculate the distance to Venus and from it the scale of the solar system. ... One occurred in 1639--too early. ...

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• The Acceleration of the Aurora
• Lagrangian Points
• Space Weather

... Staff . ... Cosmic dust has been observed both in emission and extinction everywhere in our Galaxy as well as in many other galaxies. ... Dust grains are classically thought to form in the winds of Asymptotic Giant Branch (AGB) stars. However, nowadays there is increasing observational evidence for notable dust formation in Supernovae (SNe). ... Hence the observed dust mass of 0.7вИТ0.9M вКЩ in this source can be safely considered as indicative of the mass of freshly formed dust in SN ejecta. ...

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• APOD: December 17, 1996 - Mariner's Mercury
• Dust evolution across the CO snowline in a protoplanetary disk
• The Discovery of the Galilean Satellites

... R1930 Date Received: 2004-Feb-02 18:39:45 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Planetary Radar Solar System 24 Hours Radar Observations of Mercury during the Summer 2004 Conjunction This is a prop osal to conduct a short campaign of S-band radar observations of Mercury in the summer of 2004. ... Part of the observing run. ...

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• http://www.naic.edu/vscience/schedule/tpfiles/HarmontagR1930tp.ps
• http://www.naic.edu/vscience/schedule/2016Spring/WolszczantagP3033.pdf
• http://www.naic.edu/vscience/schedule/tpfiles/WolszczantagA3026tp.pdf

... This year's eclipse is unique in duration. ... Although, at the present time, there are 6 solar observatories belonging to leading space agencies in orbit around the Earth, the eclipse of 22 July, 2009, will only be seen by two of them: the Russian CORONAS-PHOTON satellite equipped with TESIS telescopes and Japan's HINODE satellite fitted with an XRT space telescope. ... TESIS will be the first of the two devices (and the very first on Earth) to witness the solar eclipse. ...

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• Project's diary
• TESIS has recorded new sizeable mass ejections from the Sun's atmosphere

In ancient times the solar system was thought to be the whole Universe, so the study of planetary motions was cosmology. ... The planets other than the Moon and Sun generally move West to East through the stars, but occasionally stop and move in the opposite direction ( retrograde motion). In order to explain the retrograde motion of the planets, the geocentric model of the Solar System shown above puts the planets on small circles called epicycles . ...

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• Getting the observations

... Submitted by Paul Cicchetti on 11/21/2012 19:59:04 . Jupiter 19 Nov 2012 . Single processed image from Flea 3 Firewire camera. APO 6" Scope at F 45. Stacked in Images Plus; around 2500 frames, through a red, green, and blue filter. Created a RGB image in PS CS5. Sharpen image and saved. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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Australasian Science February, 2009 Page: 44 General News Region: National Circulation: 9000 Type: Magazines Science / Technology Size: 307.82 sq.cms Monthly back Cosmic Coincidence Is Not So Surprising T he "cosmic coincidence" is the term given to the observation that we seem to exist at an odd point in the Universe's history. ... The cosmic coincidence lies in the fact that the point where the proportions of matter and energy in the Universe crossed appears to have occurred relatively recently. ...

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• http://www.mso.anu.edu.au/~charley/papers/HidasLineweaver.pdf
• University Problem Based Learning Exercises for Teaching Astronomy and Physics
• Raquel Salmeron - Research Interests and Experience