Space / Astronomy: What's Hot Now: Near and Far

Space / Astronomy: What's Hot Now These articles that had the largest increase in popularity over the last week // via fulltextrssfeed.com

Near and Far Oct 25th 2011, 10:20 From Nick Greene, former Guide Pictures of the Moon - Near and Far NASA The above illustration, based on Galileo spacecraft images, shows the approximate difference in apparent size between a full moon at perigee (the closest point in the lunar orbit, pictured at left) and a full moon at apogee, the farthest point in the lunar orbit. 3 of 15 Gallery Index: Moon Pictures Gallery Related Resources to Moon Pictures Gallery Basic Moon InformationDetailed Moon InformationReturn to Solar System Tour Filed In: Space / Astronomy Related Articles Travel (Robert Louis Stevenson) Somewhere or Other - Christina Rossetti (1830-1894) The Four Immeasurables - Buddhism Argonautica by Apollonius Rhodius Book II Margaret Benson - ONCE ON A TIME

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Space / Astronomy: What's Hot Now: First Close-up of the Moon from Luna 3

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First Close-up of the Moon from Luna 3 Oct 25th 2011, 10:20 The Luna 3 spacecraft returned the first views ever of the far side of the Moon. The first image was taken at 03:30 UT on 7 October at a distance of 63,500 km after Luna 3 had passed the Moon and looked back at the sunlit far side. The last image was taken 40 minutes later from 66,700 km. A total of 29 photographs were taken, covering 70% of the far side. The photographs were very noisy and of low resolution, but many features could be recognized. This is the first close-up view of the Moon returned, taken with the narrow angle camera. This image is centered at 20 N, 105 E, the dark region below and left of center is Mare Smythii, the bright crater above and left of center is Giordano Bruno. The Moon is 3475 km in diameter and north is up. (Luna 3 3)

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Space / Astronomy: What's Hot Now: Hubble Uncovers Dust Disk around a Massive Black Hole

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Hubble Uncovers Dust Disk around a Massive Black Hole Oct 25th 2011, 10:20 Resembling a gigantic hubcap in space, a 3,700-light-year-wide dust disk encircles a 300-million- solar-mass black hole in the center of the elliptical galaxy NGC 7052. Roeland P. van der Marel (STScI), Frank C. van den Bosch (Univ. of Washington), and NASA Resembling a gigantic hubcap in space, a 3,700-light-year-wide dust disk encircles a 300-million- solar-mass black hole in the center of the elliptical galaxy NGC 7052. The disk, possibly a remnant of an ancient galaxy collision, will be swallowed up by the black hole in several billion years. The black-and-white image on the left, taken by a ground-based telescope, shows the complete galaxy. The Hubble picture on the right is a close-up view of the dust disk surrounding the black hole.

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Space / Astronomy: What's Hot Now: Brightest Stars

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Brightest Stars Oct 24th 2011, 10:21 Stars are massive shining spheres of hot gas, the closest of which is our Sun. Stars are primarily made of hydrogen, smaller amounts of helium, and trace amounts of other elements. Even the most abundant of the other elements present in stars are only present in very small quantities. Those stars which you see with your naked eye in the night sky all belong to the Milky Way Galaxy, the huge system of stars that contains our solar system. Here are the Top 10 Brightest stars as seen from Earth. 1. Sirius NASA, H.E. Bond & E. Nelan(STScI); M. Barstow & M. Burleigh(Univ. of Leicester); & J.B. Holberg(UAz) Sirius, also known as the Dog Star, is the brightest star in the sky. Its name comes from the Greek word for scorching. Distance: 8.6 LY Spectral Type: A1Vm Learn More: Sirius 2. Canopus Named either for an ancient city in northern Egypt or the helmsman for Menelaus, Canopus is the second brightest star in the sky. Distance: 74 LY Spectral Type: F0II Learn More: Canopus 3. Rigil Kentaurus Rigel Kentaurus, also known as Alpha Centauri, is the third brightest star in the sky. Its name literally means foot of the centaur. Distance: 4.3 LY Spectral Type: G2V Learn More: Rigil Kentaurus 4. Arcturus Arcturus is the brightest star in the constellation Bootes, which is one of the oldest constellations in the night sky. It is the 4th-brightest star in the entire sky. Distance: 34 LY Spectral Type: 5IIIFe-0.5 Learn More: Arcturus 5. Vega Vega is the fifth brightest star in the sky. Its name comes from the Arabic for the swooping eagle. Vega is about 25 light-years from Earth. Distance: 25 LY Spectral Type: A0Va Learn More: Vega 6. Capella The sixth brightest star in the sky, Capella's name is from the Latin for little she-goat. Capella is a yellow giant star, like our own sun, but much larger. Distance: 41 LY Spectral Type: G5IIIe+G0III Learn More: Capella 7. Rigel The seventh brightest star in the sky, Rigel's name is from the Arabic for foot, indicating its place in the constellation Orion. It is a blue supergiant and part of a 4 star system. Distance: 1400 LY Spectral Type: B8Ia Learn More: Rigel 8. Procyon Procyon is the eighth brightest star night sky. It is a yellow-white star and at 11.4 light years, one of the closer stars to Earth. Distance: 11.4 LY Spectral Type: F5IV-V Learn More: Procyon 9. Achernar The ninth brightest star night sky is Achernar. It is a bluish-white white supergiant star that is about 69 light years from Earth. Distance: 69 LY Spectral Type: B3Vpe Learn More: Achernar 10. Betelgeuse Betelgeuse is the tenth brightest star in the sky. It is a red supergiant about 13,000 times brighter than our sun and over 1000 times larger. If you placed Betelgeuse in the place of our sun, it would extend past the orbit of Jupiter. Distance: ~1400 LY Spectral Type: M1-2Ia-Iab Learn More: Betelgeuse

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Space / Astronomy: What's Hot Now: Phoenix - Pictures and Information on the Constellation Phoenix

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Phoenix - Pictures and Information on the Constellation Phoenix Oct 24th 2011, 10:21 From Nick Greene, former Guide The Phoenix - Genitive: Phoenicis Abbreviations: Phe, Phoe Right Ascension, (h): 1 Declination, (deg): 50S

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Space / Astronomy: What's Hot Now: Far Side of the Moon

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Far Side of the Moon Oct 23rd 2011, 10:19 This image of the moon was obtained by the Galileo Solid State imaging system on Dec. 8 at 7 p.m. PST as the Galileo spacecraft passed the Earth and was able to view the lunar surface from a vantage point not possible from the Earth. On the right-hand side of the image is seen the dark maria of Oceanus Procellarum, also visible from the Earth. The dark spots in the center are Mare Orientale, on the western limb of the nearside of the moon, a region barely visible from the Earth. This region and the bright far side highlands on the left have not been seen previously by a camera system such as the one on the Galileo spacecraft, which provides multispectral images of the lunar limb and far side which have not previously been obtained. Comparison of such images to those of the near-side areas from which Apollo astronauts have returned samples will help us understand the spectral properties and composition of the lunar far side.

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Space / Astronomy: What's Hot Now: Space and Astronomy For Kids

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Space and Astronomy For Kids Oct 23rd 2011, 10:19 Find information, pictures, links, and other related resources for space and astronomy for kids. Have fun and learn as you explore these great resources. From solar system tours to an activity book, you'll discover a ton of fun with astronomy for kids. 1. Solar System Tour NASA Come and join us on this Solar System Tour to learn more about our galactic neighborhood, our solar system. 2. Activity Book Nick Greene Here's a fun activity book for young astronauts and astronomers from your About Astronomy and Space Guide. Open each page of the activity book and print it. You may print as many copies as you would like for personal use, but please leave the copyright notice in place. 3. NASA Television Nick Greene NASA TV (NTV) is a resource designed to provide real-time coverage of Agency activities and missions as well as providing resource video to the news media, and educational programming to teachers, students and the general public. While NASA TV is available over the air through satellite and cable providers, you can also watch NASA TV on the Internet right here at About Astronomy & Space. 4. Sky Maps Nick Greene Create your own free sky maps using Your Sky, the interactive planetarium of the Web. You can produce maps in the forms described below for any time and date, viewpoint, and observing location. 5. Astronomy and Space Glossary NASA/JPL Find the definitions for space and astronomy related words in this online dictionary - glossary. Definitions for the terms in this online dictionary come from a number of sources. Feel free to reference this astronomy/Space online dictionary in written documents. 6. Space Computer Desktop Wallpaper NASA Select the appropriate size space wallpaper for your screen resolution. Once the full image appears in your browser, right click and choose "Set As Background". This will place your selected space wallpaper on your computer. 7. NASA Acronyms Nick Greene Did you ever wonder what those strange conglomerations of letters you read in an article about NASA and space exploration meant? Here's your chance to find out what those NASA acronyms stand for. 8. SETI Team Nick Greene SETI@home is a scientific experiment that uses Internet-connected computers in the Search for Extraterrestrial Intelligence (SETI). You can participate by running a free program that downloads and analyzes radio telescope data. Join your About Space Guide in the important endeavor of the Search for Extraterrestrial Intelligence (SETI). First, download the software and install it on your computer.

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