Crossword911.com crossword help

astrogeology

Examples

Videos

  • Earth + Impact = Drop-Moon Theory - First Moonrise - Moon origin M. Menchen Ozaita New Origin of the Moon... as a "drop" ( 1- DROP )emerged from the Earth. Images created by Manuel Menchén Ozaita, painter and scientific illustrator, author of the Drop - Moon Theory
  • Titan Canyon Country [720p] Planetary scientists have been puzzling for years over the honeycomb patterns and flat valleys with squiggly edges evident in radar images of Saturn's moon Titan. Now, working with a "volunteer researcher" who has put his own spin on data from NASA's Cassini spacecraft, they have found some recognizable ***ogies to a type of spectacular terrain on Earth known as karst topography. A poster session today, Thursday, March 4, at the Lunar and Planetary Science Conference in The Woodlands, Texas, displays their work. Karst terrain on Earth occurs when water dissolves layers of bedrock, leaving dramatic rock outcroppings and sinkholes. Comparing images of White Canyon in Utah, the Darai Hills of Papua New Guinea, and Guangxi Province in China to an area of connected valleys and ridges on Titan known as Sikun Labyrinthus yields eerie similarities. The materials may be different - liquid methane and ethane on Titan instead of water, and probably some slurry of organic molecules on Titan instead of rock - but the processes are likely quite similar. "Even though Titan is an alien world with much lower temperatures, we keep learning how many similarities there are to Earth," said Karl Mitchell, a Cassini radar team associate at NASA's Jet Propulsion Laboratory in Pasadena, Calif. "The karst-like landscape suggests there is a lot happening right now under the surface that we can't see." Indeed, Mitchell said, if the karst landscape on Titan is consistent with Earth's, there could ...
  • The Libya Montes Highland Region On Mars (2004) A video and images generated from data gathered by the DLR-operated High Resolution Stereo Camera (HRSC) onboard ESA's Mars Express orbiter show a sweep of the near-equatorial region Libya Montes, lying south of the Isidis Planitia impact basin. The central parts of the broad valley show traces of an interior valley, documenting the flow of water that once occurred on the surface of the planet during periods of wetter climate. Determinations of discharge volumes on the basis of high-resolution HRSC-derived digital terrain models reveal discharge rates that are comparable to those of the middle reaches of the Mississippi river in the USA. On the basis of crater-size frequency distributions on the valley floor and surrounding terrain it has been shown that the formation time of the valley amounts to approximately 350 million years. Measurements of erosion rates suggest that the active phases of valley development are characterised by short periods of intense fluvial activity rather than sustained liquid flow. credit: ESA/DLR/FU Berlin (G. Neukum) source:
  • Voyager 1 Flyby of Io Simulation in Celestia of the March 5, 1979 encounter with Jupiter's volcanic moon Io. Io basemap from the United States Geological Survey's Astrogeology group in Flagstaff, Arizona.
  • NASA | Astrogeologist Jake Bleacher Meet Jake Bleacher, an astrogeologist in the solar system exploration division at Goddard Space Flight Center. He studies lava flows on the Earth and on other planets. Dr. Bleacher is also a participant in the Desert Research and Technology Studies (Desert RATS or DR.ATS). This video is public domain and can be downloaded at: ‪svs.gsfc.nasa.gov Like our videos? Subscribe to NASA's Goddard Shorts HD podcast: ‪svs.gsfc.nasa.gov Or find NASA Goddard Space Flight Center on facebook: ‪ Or find us on Twitter: ‪
  • Through the Hebes Chasma Valley on Mars (2005) [720p] The 3D images from the High Resolution Stereo Camera (HRSC) on the ESA Mars Express probe help simulate a flight over the martian surface. Hebes Chasma is an enclosed, almost 8000 metre-deep trough in the northern-most part of Valles Marineris, the 3000-km long "Grand Canyon of Mars" and this video, in false (exaggerated) colour shows a four-minute flight through the valley. The origin of Hebes Chasma is thought to be connected to the near-by Tharsis Region, which was uplifted in the course of intense volcanism. The uplift created tremendous amounts of stress in the crust forming a series of faults oriented radially. credit: ESA/DLR/FU Berlin (G. Neukum) source:
  • 1994 (The Jupiter Impact of 2009) In July of 1994, the fragments of Comet Shoemaker-Levy 9 collided with Jupiter. Exactly 15 years later, in July of 2009, there was another impact. Amateur astronomer Anthony Wesley captured the first image of the 2009 impact at his home observatory in Australia. Observatories such as the NASA Infrared Telescope Facility, Gemini North, Keck, and the Hubble Space Telescope quickly followed up on the discovery, taking astronomers back to those SL9 impact days in 1994. "1994 (The Jupiter Impact of 2009)" A parody of Prince's "1999" Parody lyrics by Kelly Fast Keyboard, Percussion, Vocals, Editing Kelly Fast Camera John Annen Many thanks to Joe Harrington for interpreting a line in Kelly's email as a video idea...she never would have realized it otherwise! Animation of Simulated SL9 Impacts John Spencer www.boulder.swri.edu IMAGE/MOVIE CREDITS BY LABEL Wesley 2009 Anthony Wesley IRTF 2009 NASA/JPL/Infrared Telescope Facility, Glenn Orton, Leigh Fletcher www.jpl.nasa.gov Keck II 2009 Paul Kalas (UCB), Michael Fitzgerald (LLNL/UCLA), Franck Marchis (SETI Institute/UCB), James Graham (UCB) www.berkeley.edu Gemini 2009 (permission from Peter Michaud) Imke de Pater (UC Berkeley), Heidi B. Hammel (Space Science Institute), Travis Rector (Univ. of Alaska Anchorage), Gemini Observatory/AURA www.gemini.edu Hubble (HST) 2009 NASA, ESA, H. Hammel (Space Science Institute), and the Jupiter Impact Team ESO/TIMMI 1994 Tim Livengood, Ulli ...
  • [ The PEOPLE are ready now NASA tell the TRUTH NOW ] moonrising-. www.nrl.navy.mil www.cmf.nrl.navy.mil I have put two of my other video's with this video to show you good people that we are been told a lie and it about time the NASA people at JPL told the truth for we are ready to accept the truth then we can begin to EVOLVE as a human race to bigger & better thing's. moonrising- astrogeology.usgs.gov astrogeology.usgs.gov isis.astrogeology.usgs.gov www.nasa.gov landsat.usgs.gov landsat.usgs.gov history.nasa.gov history.nasa.gov Thank's for Watching Peace to all....
  • Flight Over The "Hourglass Crater" On Mars (2006) This unusual 'hourglass'-shaped structure is located in the southern-hemisphere highland terrain of Promethei Terra at the eastern rim of the Hellas Basin, at about latitude 38º South and longitude 104º East. Most likely the surface morphology is formed by the 'creep' of ice and debris, similar to either terrestrial rock glacier landforms or debris covered glaciers which are commonly found in high latitudes and alpine regions. 'Talus' material (or 'scree', the broken rocks that lie on a steep mountainside or at the base of a cliff) and ice-rich debris accumulated at the base of the remnant massif and filled the upper bowl-shaped impact crater which is approximately nine kilometres wide. The debris-ice mixture then flowed through a breach in the crater rim into a 17-kilometre wide crater, 500 metres below, taking advantage of the downward slope. Of particular interest is the age of these surfaces, which seem to be fairly intact over a wide area. It has been shown recently that there is some evidence that glaciers were shaping the Martian surface at mid latitudes and even near the equator until a few million years ago. Typical evidence for a significant loss of volatiles, such as pits and other depressions can be observed on all debris surfaces surrounding the remnant massif. The statistical ***ysis of the number of craters formed by meteorite impacts used for age determination also shows that part of the surface with its present-day glacial characteristics was formed only ...
  • Trailer for the documentary "Moon Hounds" (working title) This is a trailer for a new documentary about how the Apollo astronauts trained and conducted field geology on the moon; one of the last untold stories about the Apollo space program. Included are interviews with Apollo 17 astronaut Jack Schmitt and the last interview with world famous geologist and impact crater expert Gene Shoemaker months before his tragic death in 1997. Shoemaker was founder of the US Geological Survey Branch of Astrogeology in Flagstaff, Arizona, the organization that first figured out how to conduct field geology on the moon, and then in turn trained the astronauts how to do it. Jack Schmitt was a member of the US Geoligical Survey before becoming an astronaut and to this day remains the only scientist to walk on the moon. During developement and training for lunar field geology during the 1960s and 70s historic 16mm film footage was shot by the Geolgical Survey and is included in this presentation. Principle photography for this documentary is now 80% complete. Completion for 'Moon Hounds' is pending funding. For further information contact Rick Balch at [email protected]
  • Apophis Asteroid Please visit for more!
  • Cydonia Mensa ("Face On Mars") (2006) In 2006, ESA's Mars Express delivered photos of the famous 'Face on Mars' in the Cydonia region. The High Resolution Stereo Camera images are some of the most spectacular views of the Red Planet ever taken. Now, there's a stunning 3D animation of the area. The High Resolution Stereo Camera (HRSC) science team have produced a dramatic 3D animation that beautifully simulates a flight over the Cydonia 'Face on Mars', one of the most famous surface features on the planet. The Cydonia region lies at approximately 41° North and 350° East, and is located in the Arabia Terra region on Mars, in the transition zone between the Southern Highlands and the planet's northern plains. The famous 'face' - actually a remnant massif - was first observed in a photo taken on 25 July 1976 by the American Viking 1 orbiter. Shortly afterwards, a NASA press release said the formation "resembles a human head." At the time, NASA scientists had already correctly interpreted the image as an optical illusion caused by the illumination angle of the Sun, the formation's surface morphology and the resulting shadows, giving the impression of eyes, nose and mouth. The new HRSC images confirm again the natural origin of this geological feature. credit: ESA/DLR/FU Berlin (G. Neukum) source: www.geoinf.fu-
  • Ice Volcano on Titan NASA's Cassini spacecraft has found possible ice volcanoes on Saturn's moon Titan that are similar in shape to those on Earth that spew molten rock. Topography and surface composition data have enabled scientists to make the best case yet in the outer solar system for an Earth-like volcano landform that erupts in ice. The results were presented today at the American Geophysical Union meeting in San Francisco. "When we look at our new 3-D map of Sotra Facula on Titan, we are struck by its resemblance to volcanoes like Mt. Etna in Italy, Laki in Iceland and even some small volcanic cones and flows near my hometown of Flagstaff," said Randolph Kirk, who led the 3-D mapping work, and is a Cassini radar team member and geophysicist at the US Geological Survey (USGS) Astrogeology Science Center in Flagstaff, Ariz. Scientists have been debating for years whether ice volcanoes, also called cryovolcanoes, exist on ice-rich moons, and if they do, what their characteristics are. The working definition assumes some kind of subterranean geological activity warms the cold environment enough to melt part of the satellite's interior and sends slushy ice or other materials through an opening in the surface. Volcanoes on Jupiter's moon Io and Earth spew silicate lava. Some cryovolcanoes bear little resemblance to terrestrial volcanoes, such as the tiger stripes at Saturn's moon Enceladus, where long fissures spray jets of water and icy particles that leave little trace on the surface. At ...
  • Evolution Of Ganymede And Callisto [720p] This movie shows the effect of an outer solar system late heavy bombardment on the interior structure of Callisto (top) and Ganymede (bottom). The left hand side shows the surface of each moon as it suffers repeated impacts that melt its outer layers and clean out rock suspended in its ice. Colors indicate density, with black showing rock, blue showing mixed ice and rock, and lighter shades of blue indicating a decreasing rock fraction. The surfaces are initially blue, indicating a uniform ice/rock mixture. Over time, repeated overlapping impacts remove all of the rock from the moons outer layers. The right hand side shows a vertical slice through the spinning globe, allowing us to see the growth of the core (black). Each frame of the movie records 50 new impacts onto each moon. Callisto receives 2600 impacts, but Ganymede receives 5200. When the late heavy bombardment on Callisto is complete, the movie of Callisto stops, but Ganymede continues to experience an additional 2600 impacts (so the movie of its evolution has more frames). The final frame of the movie shows the structure of the moons at the end of the late heavy bombardment. Note that Ganymede's rock core is significantly larger than the core created in Callisto. credit: Southwest Research Institute source:
  • Io Color Eclipse Movie (2001) During an eclipse of Jupiter's moon Io on January 1, 2001, NASA's Cassini spacecraft recorded glows from auroras and volcanoes on Io. The camera on Cassini captured images of eclipsed Io in several colors ranging from the near-ultraviolet to the near-infrared. A black-and-white movie clip of 48 clear-filter frames spanning two hours during the eclipse was released on February 5 (PIA02882). Here, two colors have been added to show the type of evidence used by imaging scientists in determining the source of Io's auroral glows. The color pictures were taken at lower resolution -- 120 kilometers (75 miles) per pixel rather than 60 kilometers(37 miles) per pixel -- and less frequently than the clear-filter images. White dots near the equator are volcanoes, some of which are much brighter than the faint atmospheric glows. The brightest of them is the volcano Pele. Emissions of light (at wavelengths of 595 to 645 nanometers) likely arise from a tenuous atmosphere of oxygen. These glows would appear red to the eye and are consequently colored red in the movie. Emissions in near-ultraviolet wavelengths (between 300 and 380 nanometers), corresponding wavelength to the bright blue visible glows one would expect from sulfur dioxide. They have been colored blue in the movie. The blue glows are restricted to areas deep down in the atmosphere near the surface of Io, while the red glows are much more extensive, reaching heights of up to 900 kilometers (560 miles). This would be expected ...
  • Flight Over Chasma Boreale At The Martian North Pole (2005) This is a video of images taken by the DLR-operated High Resolution Stereo Camera (HRSC) onboard ESAs Mars Express spacecraft, showing part of the Martian north polar ice cap. The images show sharp detail of a series of scarps at the head of Chasma Boreale, a giant trough that almost divides the north polar ice cap in two. The trough is about 318 kilometres long and has cliffs that are nearly two kilometres high. The image is centred around 85° North and 340° East. The images show layers of water ice and dust possibly for the first time in perspective view. Chasma Boreale is cut into the layered material that lies beneath the water ice of the polar cap. For decades, these layered materials were assumed to consist of a mixture of ice and dust. Recent observations could mean that some of the layers are a source for windblown sand. The floor of the trough and the caldera-like structures are covered by dark sand dunes. This dark material could be volcanic ash or it is possible that it is dark sand eroding out of the polar layered materials. These pictures were taken in mid-summer, a time when the dark sand dunes on the trough floor were still partially covered by a white frost left over from the winter season. The frost is most definitely frozen water, rather than carbon dioxide, because the temperatures even in spring are too high for solid carbon dioxide to be present. This frost is not likely to defrost much beyond this extent. The shapes of the dunes indicate transport in ...