... Ganymede: Torn Comet Crater Chain . ... This remarkable line of 13 closely spaced craters on Jupiter's moon Ganymede was photographed by the Galileo spacecraft in 1997. ... Jupiter Swallows Comet Shoemaker Levy 9 . ... What happens when a comet encounters a planet? ... A giant planet like Jupiter, however, is mostly gas. ... M44: A Beehive of Stars . ... M44 is a prominent open cluster of stars. ... In 1993, a strange string of comet pieces was discovered near the planet Jupiter. ... 1997 1998 . ...

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... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. October 20, 1997 . Spiral Eddies On Planet Earth . Credit: STS 41G Crew , NASA . ... Looking like a twisting cloud of gas and dust between the stars this wispy nebulosity is actually close by - a spiral eddy formed near the North Atlantic Gulf Stream off the East coast of the US. ... About APOD > . ... NASA Technical Rep.: ...

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• APOD: December 14, 1996 - Our Solar System from Voyager
• APOD: August 19, 1995 - Our Solar System from Voyager
• APOD: May 17, 1998 - Our Solar System from Voyager

... Planets and Brown Dwarfs . ... Mission Definition . Ask anyone on the street to give an example of a planet, and they'll consider you a bit dim. ... Finally, if you ask "What is the exact scientific definition of 'planet'?", it turns out that nobody can answer it, because there really isn't one. ... The word itself means "wanderer" in Greek, and other cultures generally have words for "planet" with a similar meaning. So why isn't that good enough for us today? ...

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• ASP: Sharing the Universe
• ASP: Star Science in the Autumn Sky
• ASP: Responsible Exploration

... Stars come in different colours and sizes. This new picture shows the famous Red Giant star called Betelgeuse (you say the name as Beetle-Juice ). ... In the photo, the fuzzy red, blue, and purple cloud around the star is the nebula. Since the nebula isn t as bright as Betelgeuse, astronomers have to block some of the star s light to be able to photograph it. ... Our Sun will eventually become a Red Giant star like Betelgeuse but not for another 5,000,000,000 years! ...

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• http://www.eso.org/public/news/eso1204/kids/
• http://www.eso.org/public/news/eso1205/kids/
• http://www.eso.org/public/news/eso1509/kids/

Astropark Home . Solar System . ... Planets . ... A year is the time that it takes for a planet to go around the Sun. ... As a result, an Earth year is very different in length from a year on Saturn or any other planet. ... But on this scale, most of the planets are too small to see, so their size has been increased by 200 times. ... The Astropark's red gravel represents the asteroid belt – thousands of smaller bodies which range in size from pebbles up to small planets hundreds of miles across. ...

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• Armagh Astropark
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... These other worlds are the moons of our Solar System , of which there are approximately 170 in orbit around our planets.Some of these moons are very interesting, and have diverse and unique features, very different to our barren, heavily cratered Moon .Jupiter, the largest planet in our solar system has the most moons of any planet with known 64 moons in orbit.The four ... Ganymede, the largest moon in the Solar System thought to have oceans located underneath its icy surface.( ...

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• Astronotes | Armagh Planetarium's astronomy news from across the Universe -
• How to see exoplanets! | Astronotes
• Did a Wandering Star Light Up Ancient Skies? | Astronotes

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

HUBBLE SPACE TELESCOPE DAILY REPORT #931 PERIOD COVERED: 0800 EST Daily Status Report as of 198/1200Z. 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed FGS 5056 (High Speed Astrometry - A Search for Planetary Companions to Low Mass) The Fine Guidance Sensors were used to make astrometric observations of Bernard's star to look for the presence of a Jupiter sized planet in orbit around the target star from the position perturbations caused by the planet. ... Both observations were received. ...

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• http://www.stsci.edu/ftp/observing/status_reports/old_reports_93/hst_status_08_17_93
• http://www.stsci.edu/ftp/observing/status_reports/old_reports_94/hst_status_05_11_94
• http://www.stsci.edu/stsci/meetings/planets/abs/prog38.html

... 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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• All about Jupiter

... Tonight's Sky . ... Sky this Month . ... solar system . ... Sky this Week . ... Observe the Solar System . Astronomy for Kids . ... Tour the Solar System . ... Are astronomers still looking for "Planet X," a 10th planet in our solar system? ... For most of the 20th century, some astronomers were convinced that a 10th planet Planet X lay somewhere beyond Neptune. ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ...

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• Why do some stars appear to flash a variety of different colors when you look
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... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. March 25, 1999 . March of the Planets . ... Explanation: This March stargazers have been treated to eye-catching formations of bright planets in western evening skies. On March 3rd, looking toward a beautiful sunset from a beach on the Hawaiian isle of Maui, photographer Rick Scott recorded this fleeting, four-planet "hockey stick" array. ...

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• The Planet Jupiter
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... They had expected to see impact craters like those on the other terrestrial bodies and from their number per unit area to estimate the age of Io's surface. ... This may have been the most important single discovery of the Voyager missions; it was the first real proof that the interiors of other "terrestrial" bodies are actually hot and active. ... A nalysis of the Voyager images led scienties to believe that the lava flows on Io's surface were composed mostly of various compounds of molten sulfur. ...

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• Discovery of the Solar System
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• Millennium of Geomagnetism: Magnetism of other planets

... Early discoveries . ... Faraday's Lines of Force (field lines) . ... The Earth's Dynamo . ... It thus came as a surprise that other planets of the solar system, very different from Earth, also had their own magnetic fields [Bagenal, 1992; see table below]. ... Magnetic Moment/M Earth . ... Table 2: Magnetic Fields of Earth and of the Giant Planets [from Bagenal, 1992] . ... Thus, as the study of planetary magnetic field enters its second millennium, it faces more unanswered riddles than ever before....

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• Spacecraft that Explore Distant Space
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Giant Jupiter. Jupiter . ... Jupiter has no solid surface that is why speaking about its dimensious point the radius of the upper border line of the clouds, where the presseru is about 10 KPa; radius of Jupiter on the equator is 71400 km. ... The Jupiter satellites. ... Nowadays 16 satellites of the Jupiter are known: Adrastea, Mitis, Amaltea , Phina,then 4 Galilei satellites: Io , Europe , Hanimed , Callisto , Leda, Aimalia, Zicitea, Elara, Ananke, Carme, Pasipe and Sinope. ... Jupiter's ring. ...

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• smalltelae
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Astronomy Discussion Forums . Forums: . ... God and Science ћ SETI ћ Software ћ UFO ћ XEphem . ... Discussion Forums | ... Post . ... Alignment Of 2 Planets . ... Post Message | ... Jupiter was actually worshipped by Abraham in secret as the true God known as Jehovah. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• Moon, Planets And Aurora, Oh My! - an Astronomy Net Article
• Finding Himalia, The Fifth Brightest Moon Of Jupiter - an Astronomy Net Article
• Lunar Libration - an Astronomy Net Article

. Previous slide . Next slide . Back to first slide . View graphic version .

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• Jupiter from ANU's 24-inch telescope
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... - 20070419/ 2011-04-17 18:27 - 20080714/ 2011-04-17 18:26 - 20090731/ 2011-04-19 01:14 - 20100810/ 2011-04-19 01:21 - 20100816/ 2010-10-18 20:54 - 20100904/ 2010-10-18 20:54 - 20101005/ 2010-10-18 21:28 - 20101006/ 2010-10-18 21:27 - 20101007/ 2010-10-18 21:25 - 20101008/ 2010-10-18 20:54 - 20101009/ 2010-10-18 21:17 - 20101010/ 2010-10-18 21:14 - 20101015/ 2010-10-18 21:12 - 20101016/ 2010-10-18 21:46 - 20101017/ ...

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• Index of /shared_skies/archive/select/planets/jupiter/20140313
• Index of /shared_skies/archive/select/planets/jupiter/20101117
• Index of /shared_skies/archive/select/planets/jupiter/20101007

... mar05: filter bank installed but left in wide band mode. 05apr05: 10db amps placed in pixel 2a,2b path in front of the filter bank. 08apr05: 10db amps placed in front of filter bank for all alfa pixels. 12apr05: 6db attenuators placed before 10db amps. 25apr05: 10db amps are now only in the OH filter bath. ... This allowed the search of the data taken by P2030 (100Mhz bandwidth, cfr 1420Mhz, 64usec samples) between 01feb05 and 01may05 for signals of the aerostat radar. ...

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• Extra-solar planets
• Jupiter's satellites National Astronomy and Ionosphere Center (Arecibo
• Trouble Shooting at the Telescope

Determination of mass of Jupiter and that of some minor planets from observations of minor planets moving in 2:1 commensurability with Jupiter Olga M. Ko chetova and Yulija A. Chernetenko Institute of Applied Astronomy, St. Petersburg, Russia September 19, 2000 Keywords: Jupiter 's mass , asteroid's masses , observations of minor planets Great numb er of observations of minor ... Hoffmann (1989) p ointed out the fruitfull of that approach. ... Table II. ...

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• (Untitled)
• list1

Second Run If you run the same data again, but change the bin size to 501 the data is pushed into the white noise, so this is a good way of verifying any peaks in the red noise power spectrum. ... I'm guessing this is to do with the fact that the period of the planet is 500 days and the bin size is now 501 days so they are very similar. Figure 5 The chance of the peak in figure 6 being a possible planet is 0.0136 for the peak at 0.0019 cycles per day, which is the peak we are interested in. ...

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• planets
• Radio Observations of Jupiter
• First 3-D images of Jupiter's radiation belts