... In the center of a swirling whirlpool of hot gas is likely a beast that has never been seen directly: a black hole. Studies of the bright light emitted by the swirling gas frequently indicate not only that a black hole is present, but also likely attributes. ... The Milky Way flows through this celestial expanse whose wonders also include the closest star to the sun, Alpha Centauri, and the largest globular star cluster in our galaxy, Omega Centauri. NGC 1579: Trifid of the North . ...

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The Moon is the only natural satellite of Earth : orbit : 384,400 km from Earth diameter : 3476 km mass : 7.35e22 kg . ... The New Solar System . ... Very high quality reproductions of Apollo images of the Moon. ... As the Moon orbits around the Earth once per month, the angle between the Earth, the Moon and the Sun changes; we see this as the cycle of the Moon's phases. ... The Moon's gravitational attraction is stronger on the side of the Earth nearest to the Moon and weaker on the opposite side. ...

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• APOD: January 3, 1998 - The Barren Moon
• APOD: 2000 July 21 - Eros Craters And Boulders
• APOD: October 31, 1998 - Bats And The Barren Moon

Apollo 12 astronaut Alan Bean holds a special environmental sample container which holds soil collected during the second moonwalk EVA. ... Central Latitude/Longitude (deg): -3.01, 23.42 . ... Instrument: Hasselblad Camera . ... Instrument Field of View (deg): 60 mm Focal Length . ... Illumination Incidence Angle (deg): N/A . ... NASA Image ID number: AS12-H-49-7278 . ... Code 633, NASA Goddard Space Flight Center . Greenbelt, MD 20771, USA . ... Code 630, NASA Goddard Space Flight Center . ...

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• Educator's Guide to Impact Craters
• New Images Hint at Wet and Wild History For Europa
• Titan Press Release

... Listed below are questions submitted by users of "The Great Magnet, the Earth" and the answers given to them. ... In "The Exploration of the Earth's magnetosphere" on the magnetic environment of the Earth in space (a few Q duplicated here) . ... 11) Magnetic Shielding . ... 51) Can electricity be generated from the Earth's magnetic field? ... 9) Measuring Earth's magnetic field . ... 6) Reversals of the Earth's field (4 queries) . ... 42) Could generated electricity affect Earth's magnetic field? ...

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• Spacecraft that Explore Distant Space
• The Rotating Earth
• Origin of The Earth's Magnetism

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• Evolution of Intelligence
• Low Surface Brightness Galaxy Gallery
• Solar/Electric Cars

... Aurora . ... William Gilbert The north-south pointing property of the compass needle was discovered in China around the year 1000, and in 1600 William Gilbert in London showed that this could be explained if the entire Earth was a huge magnet. ... Only after 1958, when the first scientific spacecraft were launched and when Explorers 1 and 3 discovered the radiation belt, did scientists fully appreciate the complexity of electric and magnetic phenomena that occur in the Earth's magnetic environment. ...

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• Trapped Radiation
• The Sun
• Polar Orbiting Satellites

... Two years ago, the Clementine space probe snatched this picture of the Moon as lit not by direct sunlight, but by reflected sunlight from Earth. ... Out With the Tide . ... Tides occur because the gravitational force between two bodies decreases with distance. ... The imbalanced gravitational pull of the Moon causes the oceans to be slightly non-spherical, creating two high tides and two low tides. ... In return, the Moon exerts a gravitational force on the high tide, causing Earth to rotate slower....

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• ASP: The Surface of the Moon
• ASP: Good Astronomy Activities on the WWW
• ASP: Miranda: A Jigsaw Puzzle World

Go directly to the moons of: . Mercury Venus Mars Jupiter Saturn Uranus Neptune Pluto . MARS . Pronunciation . Earth's Moon . ... Aeolis . ... Aestuum . ... Aeria . ... A-muh-ZAHN-is . ...

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• Planets and Moons

Sky watchers will witness a total lunar eclipse in the early hours of Thursday 21st February, subject to weather conditions. For a total lunar eclipse to occur, the Moon in its orbit around the Earth must pass fully into the cone-shaped shadow of the Earth in space. ... The Moon does not usually go completely dark because the Earth's atmosphere refracts direct sunlight around the edge of the shadow on to the Moon's surface. This causes the Moon to turn a dark, blood-red or copper colour. ...

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• Stars Beyond Maturity
• Searching for Planets Around Other Stars - from Galway: Monday 13 October 2008
• V652HER AND MERGED BINARY WHITE DWARF MODELS

Astrophysics Group: USS Drongo Briefing To: From: CC: Date: Re: Captain Howard Astrophysics Group Ships Computer 05/06/02 Initial Conclusions from Astrophysical Observations Summary We have landed at one of the poles of Ziggy. ... Ziggy's moon is in an orbit that carries it over the poles. ... At our current location, the sun will be above the horizon for half a ziggy year, and then below the horizon for half a ziggy year, just like at the poles of the · · Page 1 Earth. ...

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• http://www.mso.anu.edu.au/pfrancis/roleplay/ziggy/model_answer1.doc
• Research Interests
• The Spinning Sun

FEATURES OF THE HYDROGEN DISTRIBUTION AROUND LUNAR CRATERS PROCLUS AND KEPLER. ... In result of analysis of the data Lawrence and Feldman constructed the hydrogen distribution on the lunar surface [1]. ... However, the authors shown, that EN flux data features may be explained by other element abundance in the lunar soils, namely: Si, Ca, Gadolinium (Gd), Samarium (Sm) and Fe. ... Using of the Feldman's interpretation of the Lunar Prospector data [8], we constructed hydrogen distribution map (Fig.1). ...

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• http://selena.sai.msu.ru/Pug/Publications/Pugacheva%20LPS%2041.pdf
• Morphological Catalogue Of The Craters Of Mars
• Родионова Жанна Федоровна

... HUBBLE UNCOVERS DUST DISK AROUND A MASSIVE BLACK HOLE . Resembling a gigantic hubcap in space, a 3,700 light-year-diameter dust disk encircles a 300 million solar-mass black hole in the center of the elliptical galaxy NGC 7052. ... Because the jets in NGC 7052 are not perpendicular to the disk, it may indicate that the black hole and the dust disk in NGC 7052 do not have a common origin. ... NGC 7052 is located in the constellation of Vulpecula, 191 million light-years from Earth. ...

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• The Ever-changing Circumstellar Nebula around UW Centauri
• HST this week: 113