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NGC 1068 supermassive black hole
This is a composite image of NGC 1068, one of the nearest and brightest galaxies containing a rapidly growing supermassive black hole. The X-ray images and spectra obtained using Chandra's High Energy Transmission Grating Spectrometer show that a strong wind is being driven away from the center of NGC 1068 at a rate of about a million miles per hour. This wind is likely generated as surrounding gas is accelerated and heated as it swirls toward the black hole. A portion of the gas is pulled into the black hole, but some of it is blown away. High energy X-rays produced by the gas near the black hole heat the ouflowing gas, causing it to glow at lower X-ray energies. X-ray data from the Chandra X-ray Observatory are shown in red, optical data from the Hubble Space Telescope in green and radio data from the Very Large Array in blue. The spiral structure of NGC 1068 is shown by the X-ray and optical data, and a jet powered by the central supermassive black hole is shown by the radio data. This Chandra study is much deeper than previous X-ray observations. Using this data, researchers believe that each year several times the mass of our sun is being deposited out to large distances, about 3,000 light years from the black hole. The wind likely carries enough energy to heat the surrounding gas and suppress extra star formation. These results help explain how a supermassive black hole can alter the evolution of its host galaxy. It has long been suspected that material blown away from a black hole can affect its environment, but a key question has been whether such "black hole blowback" typically delivers enough power to have a significant impact. NGC 1068 is located about 50 million light years from Earth and contains a supermassive black hole about twice as massive as the one in the middle of the Milky Way Galaxy. Image Credit: X-ray (NASA/CXC/ MIT/C.Canizares, D.Evans et al), Optical (NASA/STScI), Radio (NSF/ NRAO/VLA) The following is the animated gif from STS 130 Endeavour space shuttle mission February 2010.
One of Saturn's moons is spitting something!
Dramatic plumes, both large and small, spray water ice out from many locations along the famed "tiger stripes" near the south pole of Saturn's moon Enceladus. The tiger stripes are fissures that spray icy particles, water vapor and organic compounds. More than 30 individual jets of different sizes can be seen in this image and more than 20 of them had not been identified before. At least one jet spouting prominently in previous images now appears less powerful. This mosaic was created from two high-resolution images that were captured by the narrow-angle camera when NASA's Cassini spacecraft flew past Enceladus and through the jets on Nov. 21, 2009. (For other images captured during the same flyby, see PIA11686 and PIA11687). Imaging the jets over time will allow Cassini scientists to study the consistency of their activity. The south pole of the moon lies near the limb in the top left quadrant of the mosaic, near the large jet that is second from left. Lit terrain seen here is on the leading hemisphere of Enceladus (504 kilometers, 313 miles across). Cassini scientists continue to study the question of whether reservoirs of liquid water exist beneath the surface of the moon. See PIA11114 and PIA08386 to learn more. The view was obtained at a distance of approximately 14,000 kilometers (9,000 miles) from Enceladus and at a sun-Enceladus-spacecraft, or phase, angle of 145 degrees. Image scale is 81 meters (267 feet) per pixel. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate in Washington. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo. For more information about the Cassini-Huygens mission visit http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov. The Cassini imaging team homepage is at http://ciclops.org .Credit: NASA/JPL/SSI Cassini Shoots New Close-Ups
February 16, 2010 Blazing through its closest pass of the Saturnian moon Mimas on Feb. 13, Cassini sent back striking close-ups of the moon likened to the Death Star from "Star Wars" and the enormous crater scarring its surface. The flyby also yielded solid data on the moon's thermal signature and surface composition.
The images, which have the highest resolution so far, also show jumbled terrain inside the crater and many craters within the crater. These features hint at a long history, which scientists will be working diligently to analyze. "This flyby has been like looking at a cell or an onion skin under the microscope for the first time," said Bonnie Buratti, one of the leads for the Satellite Orbiter Science Team. "We'd seen the large crater from afar since the early 1980s, but now its small bumps and blemishes are all clearly visible." This encounter took the spacecraft as close as about 9,500 kilometers (5,900 miles) above Mimas. Cassini had to maneuver through a dusty region to get in position, but survived the trip unscathed, as expected. The moon averages 396 kilometers (246 miles) in diameter. The walls of Herschel Crater are about 5 kilometers (3 miles) high, and parts of the floor are approximately 10 kilometers (6 miles) deep. Unprocessed images of the flyby are available at http://saturn.jpl.nasa.gov/photos/raw/. More information about the Cassini mission is at http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov. Enhanced 3D Model of Mars Crater Edge Shows Ups and Downs
February 17, 2010 - A dramatic 3D Mars view based on terrain modeling from NASA's Mars Reconnaissance Orbiter data shows "highs and lows" of Mojave Crater. The vertical dimension is exaggerated three-fold compared with horizontal dimensions in the synthesized images of a portion of the crater's wall. The resulting images look like the view from a low-altitude aircraft. They reflect one use of digital modeling derived from two observations by the orbiter's High Resolution Imaging Science Experiment camera. This enhanced view shows material that has ponded and is backed up behind massive blocks of bedrock in the crater's terrace walls. Hundreds of Martian impact craters have similar ponding with pitted surfaces. Scientists believe these "pitted ponds" are created when material melted by the crater-causing impacts is captured behind the wall terraces. Mojave Crater, one of the freshest large craters on Mars, is about 60 kilometers (37 miles) in diameter. In a sense, it is like the Rosetta Stone of Martian craters, because it is so fresh. Other craters of this size generally have already been affected by erosion, sediment and other geologic process. Fresh craters like Mohave reveal information about the impact process, including ejecta, melting and deposits. WISE Spies a Comet with its Powerful Infrared Eye The red smudge at the center of this picture is the first comet discovered by NASA's Wide-Field Infrared Survey Explorer, or WISE. Image credit: NASA/JPL-Caltech/UCLA February 11, 2010 NASA's Wide-field Infrared Survey Explorer, or WISE, has discovered its first comet, one of many the mission is expected to find among millions of other objects during its ongoing survey of the whole sky in infrared light. wise satellite spies a comment
Jurassic Space:
February 18, 2010 Imagine finding a living dinosaur in your backyard. Astronomers have found the astronomical equivalent of prehistoric life in our intergalactic backyard: a group of small, ancient galaxies that has waited 10 billion years to come together. These "late bloomers" are on their way to building a large elliptical galaxy. Such encounters between dwarf galaxies are normally seen billions of light-years away and therefore occurred billions of years ago. But these galaxies, members of Hickson Compact Group 31, are relatively nearby, only 166 million light-years away .New images of this foursome by NASA's Hubble Space Telescope offer a window into the formative years of the universe, when the buildup of large galaxies from smaller building blocks was common. The analysis was bolstered by infrared data from NASA's Spitzer Space Telescope and ultraviolet observations from NASA's Galaxy Evolution Explorer and Swift satellite. Those data helped the astronomers measure the total amount of star formation in the system. For more information: http://hubblesite.org/news/2010/08 NASA's Stardust Burns for Comet, Less Than a Year Away February 18, 2010 PASADENA, Calif. - Just three days shy of one year before its planned flyby of comet Tempel 1, NASA's Stardust spacecraft has successfully performed a maneuver to adjust the time of its encounter by eight hours and 20 minutes. The delay maximizes the probability of the spacecraft capturing high-resolution images of the desired surface features of the 2.99-kilometer-wide (1.86 mile) potato-shaped mass of ice and dust. 
Mimas bears the mark of a violent, giant impact from the past - the 140-kilometer-wide (88-mile-wide) Herschel Crater - and scientists hope the encounter will help them explain why the moon was not blown to smithereens when the impact happened. They will also be trying to count smaller dings inside the basin of Herschel Crater so they can better estimate its age. In addition, Cassini's composite infrared spectrometer will be working to determine the thermal signature of the moon, and other instruments will be making measurements to learn more about the surface composition. The Mimas flyby involves a significant amount of skill because the spacecraft will be passing through a dusty region to get there. Mission managers have planned for the Cassini spacecraft to lead with its high-gain antenna to provide a barrier of protection. At closest approach, the spacecraft will be flying about 9,500 kilometers (5,900 miles) above the moon. Cassini will start taking images and measurements shortly after closest approach. Mimas is an inner moon of Saturn that averages 396 kilometers (246 miles) in diameter. The diameter of Herschel Crater is about one-third that of the entire moon. The walls of the crater are about 5 kilometers (3 miles) high, and parts of the floor are approximately 10 kilometers (6 miles) deep. More information is available at http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov.
Check your local fuel prices. Make National Voice Your Home Page Missing Children
Code Amber News Service (CANS) issued this Missing Endangered person Alert after the girl disappeared from her bedroom some time after 3 AM Tuesday morning in Satsuma. Satsuma is approximately 75 miles east of Gainsville. Haleigh Cummings a white female, 3 feet tall, weighs 39 pounds and has blond hair and brown eyes. She was last seen wearing a pink shirt and underwear. There are no suspects in this case at this time. However, due to the circumstances of the child's disappearance an abduction is strongly suspected. There is no suspect vehicle at this time. Anyone with information is asked to call the Putnam County Sheriff's office at (386) 329-0808 or dial 911. Download free video of missing Florida child Haleigh Cummings Email this alert to a friend in the area.
Everglades National Park photographic quick tour Shark Valley Loop Road and observation tower |
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