Explosions In The Z Camelopardalis System djxatlanta 2026-09-30 | Explosions In The Z Camelopardalis System
Our Universe Visualized - Thank You and Goodbye! ☺ djxatlanta 2012-05-31 | Thank you for visiting "Our Universe Visualized" ...After several years of lovingly maintaining this channel, I have arrived at the difficult decision to discontinue updates, effective 2012 June 1.I have enjoyed collecting videos, animations and visualizations of naturalphenomena from around the universe, and I hope that this channel continues to be used as an educational and entertaining resource for many years to come.For those interested in using any of these videos in their projects, each clip is accompanied by a text description, at the bottom of which are direct links to the original source files and proper credit attributions.Thank you to every visitor and subscriber who has been a part of this online adventure!background image: Arp 273 by the Hubble Space Telescopeimage credit: NASA, ESA and the Hubble Heritage Team (STScI/AURA)
Curiosity Rover Scoop Test [720p] [3D converted] djxatlanta 2012-05-31 | Curiosity will be a rolling geology lab on Mars. See how engineers take a soil sample using her stunt double.credit: JPL / Caltechsource: http://www.jpl.nasa.gov/video/index.cfm?id=1082
Landsat Data Continuity Mission (LDCM) Orbits [1080p] [3D converted] djxatlanta 2012-05-31 | The Landsat Data Continuity Mission (LDCM), also to be named Landsat 8 after its scheduled launch in June 2013, will be the eighth in the series of Landsat satellites. Since 1972, Landsat satellites have been observing and measuring Earth's continental and coastal landscapes at 15 to 30 meter resolution, where human impacts and natural changes can be monitored and characterized over time.This animation portrays how the LDCM satellite will orbit the Earth 13 times per day at an altitude of 705 km collecting landcover data. With a cross-track width of 185 km, the satellite will completely cover the globe in a 16 day period compiling a total of 233 orbits. A day number and the elapsed time are shown to clearly depict the passage of time which starts slowly in the beginning and increases to day-by-day steps at the end of the animation. The terrain is exaggerated by 6 times during the first day portrayed, but is increased to 12 times when the camera pulls out to a global view. An artificial orbit trail is shown following the spacecraft to indicate its position when the satellite itself is too small to be visible. credit: NASA/Goddard Space Flight Center Scientific Visualization Studiosource: http://svs.gsfc.nasa.gov/goto?3939
Japan Earthquake/Tsunami Atmospheric Effects [720p] [3D converted] djxatlanta 2012-05-31 | GPS technology helps scientists track tsunamis and improve future warning systems.credit: JPL / Caltechsource: http://www.jpl.nasa.gov/video/index.cfm?id=1083
Hubblecast 55: Crash of the Titans [1080p] [3D converted] djxatlanta 2012-05-31 | In this episode of the Hubblecast, scientists Jay Anderson and Roeland van der Marel show how they have used Hubble observations to predict the future of the Andromeda Galaxy and the Milky Way.Projecting the motion of Andromeda's stars over the next 8 billion years, the astronomers now know the path that galaxy is taking through space. And it's heading straight for us! Computer simulations based on Hubble observations show how the two galaxies will crash together in around 4 billion years' time.credit: ESA/Hubble & NASA/STScIsource: http://www.spacetelescope.org/videos/hubblecast55a
Incandescent Sun (2011.09.25) [720p] [3D converted] djxatlanta 2012-05-31 | This video takes SDO images and applies additional processing to enhance the structures visible. While there is no scientific value to this processing, it does result in a beautiful, new way of looking at the sun. The original frames are in the 171 Angstrom wavelength of extreme ultraviolet. This wavelength shows plasma in the solar atmosphere, called the corona, that is around 600,000 Kelvin. The loops represent plasma held in place by magnetic fields. They are concentrated in "active regions" where the magnetic fields are the strongest. These active regions usually appear in visible light as sunspots. The events in this video represent 24 hours of activity on September 25, 2011. credit: NASA/Goddard Space Flight Centersource: http://svs.gsfc.nasa.gov/goto?10990
Materials Exposed In Coprates Chasma (2012.05.05) [720p] [3D converted] djxatlanta 2012-05-31 | This image shows several kilometers of topography exposed along the wallrock within Coprates Chasma. Higher topography is towards the bottom of the image while the floor of Coprates Chasma is visible at the top of the image. There are patches of brighter materials exposed within the wallrock and along the chasma floor. The bright massive rocks exposed in the wallrock likely represent weathered rocks that have altered to this brighter material.Lower down the wallrock and along the chasma floor, the brighter material appears layered and could represent sediments deposited within the chasma when water or ice may have existed here. The image also shows finer material composed of eroded wallrock and eolian debris that is mass wasting downslope.credit: NASA/JPL/University of Arizonasource: http://hirise.lpl.arizona.edu/ESP_027063_1655
Landforms Near Grota Valles (2012.03.12) [720p] [3D converted] djxatlanta 2012-05-31 | The landforms in this observation are quite diverse, with a segment of the Cerberus Fossae (a deep trough extending east-west) and surrounding terrain that has been eroded by some fluid, either water or lava.There are many boulders in places, either on steep slopes or excavated by impact craters. The high hills are islands of older terrain surrounded by younger lavas. credit: NASA/JPL/University of Arizonasource: http://hirise.lpl.arizona.edu/ESP_026356_1960
Streamlined Hills in Elysium Planitia (2012.03.17) [720p] [3D converted] djxatlanta 2012-05-31 | This observation was taken to investigate the topography of hills that were eroded by floods of water or lava. In many locations near here it is clear that the last fluid to flow through the region was lava.Clear margins of lava flows are visible as well as lava textures on the channel floor. In this location, the cover of wind-blown sand and the effect of many small impact craters has erased such obvious indicators of lava. This is likely because the lava coating is thin and can be easily erased.However, it is also possible that no lava passed through this location. Further investigation of these data should help us better understand the role of water and lava in changing the Martian landscape.credit: NASA/JPL/University of Arizonasource: http://hirise.lpl.arizona.edu/ESP_026435_1960
Near the Mouth of Morava Valles (2012.02.12) [720] [3D converted] djxatlanta 2012-05-31 | Morava Valles drained Ladon Basin and discharged towards the large regions of chaotic terrain near the head of Ares Valles.Because the valley emerges full bore from Ladon Basin (much like the Niagara river emerges from Lake Erie on the Earth), it has been hypothesized that it was formed when a lake overflowed the basin.There are numerous valleys, including the large Ladon Valles, that end along the margin of Ladon Basin. Some of the outcrops visible in this image and elsewhere in the basin show evidence of layering due to deposition of sediments.Comparison of the nature and extent of layers exposed here and elsewhere around Ladon basin should help to constrain their origin, by water flow or other processes.credit: NASA/JPL/University of Arizonasource: http://hirise.lpl.arizona.edu/ESP_026007_1640
ALMA: Radio Galaxy Centaurus A [720p] [3D converted] djxatlanta 2012-05-31 | This zoom and pan sequence starts with a broad view of the Milky Way, and zooms in to a visible-light view of the radio galaxy Centaurus A. The final view shows a combination of ALMA and near-infrared observations. The new ALMA observations, shown in a range of green, yellow and orange colors, reveal the position and motion of the clouds of gas in the galaxy. They are the sharpest and most sensitive such observations ever made.credit: ALMA (ESO/NAOJ/NRAO); ESO; Y. Beletsky; Nick Risinger; music: Disasterpeacesource: http://www.eso.org/public/news/eso1222
NASA: 2012 Venus Transit Preview (2012.06.05) [720p] [3D converted] djxatlanta 2012-05-25 | It won't happen again until December 2117. On June 5th, 2012, Venus will transit the face of the sun in an event of both historical and observational importance. The best places to watch are in the south Pacific, but travel is not required. The event will also be visible around sunset from the USA.credit: NASAsource: http://science.nasa.gov/science-news/science-at-nasa/2012/18may_venustransit
In the Transition Zone (2012.01.18) [720p] [3D converted] djxatlanta 2012-05-25 | Nestled between mesas, this image shows the valley floor where eroded rocky and/or soil debris appears to have flowed viscously from the mesa walls across the valley to merge. A leading theory is that ice and snow became entrained with the soil debris as it shed from the mesa. This combined ice-rich debris then flowed slowly downhill. "Rock glaciers" on Earth are an analogous landform that flow viscously like a glacier, lubricated by ice trapped in the pore spaces.The image shows light toned viscous debris that overlays a darker toned surface. Both surfaces sport irregular fracture patterns and evidence that substantial erosion has since taken place. The upper viscous-flow surface also contains abundance small, regular polygonal patterns. Such patterns are commonplace in permafrost on Earth, and are typically considered strong evidence for shallow subsurface ice.Erosion and the formation of small scarps reveal a multitude of layers within the subsurface. Such structure is unusual for a single glacial flow and may indicate episodic glacial advance and retreat. Additionally, the sparse population of rocks on the surface and along the eroded scarps suggest that the debris eroding from the mesas consists largely of soil.credit: NASA/JPL/University of Arizona source: http://hirise.lpl.arizona.edu/ESP_025675_2255
Expanded Craters on Icy Martian Terrain (2012.03.23) [720p] [3D converted] djxatlanta 2012-05-25 | The middle of this image contains a cluster of depressions (craters) with two levels: a small inner crater, surrounded by a shallow depression extending outward from the inner crater. This image is located at 50 degrees north latitude, where shallow ice has been mapped by the Mars Odyssey spacecraft. MRO has detected newly-formed impact craters in this broad region that exposed shallow ice, and also revealed that it is nearly pure ice.One interpretation of the expanded craters visible here is that a group of small impacts, probably secondary craters from a much larger primary crater, exposed the clean, shallow ice in this region. Once exposed, the ice is unstable and sublimates (passes directly from ice to gas), and the shallow depressions could gradually expand.credit: NASA/JPL/University of Arizona source: http://hirise.lpl.arizona.edu/ESP_026510_2310
Trough within Mars Ladon Basin (2012.03.15) [720p] [3D converted] djxatlanta 2012-05-25 | This image shows an approximately 2-kilometer wide trough within Ladon Basin. This trough, and others around the perimeter of the basin, were probably produced during the gradual sinking of the materials here.The basin formed during an epoch in Martian history called the Noachian period, and may have harbored a lake based upon the fluvial valleys that flow into it. If a lake once existed here then the trough is a window that could expose any sediments deposited within the lake, making this an exciting image to explore.credit: NASA/JPL/University of Arizona source: http://hirise.lpl.arizona.edu/ESP_026416_1620
Martian Breccia with Large Clasts (2012.01.12) [720p] [3D converted] djxatlanta 2012-05-25 | In this beautiful image there appears to be a breccia layer, or a layer composed of rock fragments embedded in a finer material. This particular breccia is made up of fragments (or "clasts" as they are known to geologists) so large they can be seen by HiRISE. The breccia layer, seen most easily near the center of this image, seems to be more resistant to erosion than the surrounding material, serving as a caprock to protect the layers beneath it. The HiRISE team is planning on acquiring another image over this area in order to create a stereo (3-D) pair. This will help scientists better understand the topography and stratigraphy of the area.credit: NASA/JPL/University of Arizona source: http://hirise.lpl.arizona.edu/ESP_025600_1735
SDO: Multiple Solar Prominences (2012.05.04) [2048p] [3D converted] djxatlanta 2012-05-25 | The Sun sported numerous prominences along its edge over a two-day period (May 14-16, 2012). Prominences were rising up and breaking off at a good clip. The surface as well was peppered with lighter areas, which are active regions, often the sources of solar storms. Our favorite prominence is the tall thin one that stands up at the top of the Sun near the end of the clip. And this too: plasma can be seen streaming along magnetic field lines on the left and particularly the right side. The Sun is viewed here in extreme ultraviolet light.credit: NASA / GSFC / SDOsource: http://sdo.gsfc.nasa.gov/gallery/potw.php?v=item&id=100
Partial Eclipse of the Strawberry Moon (2012.06.04) [720p] [3D converted] djxatlanta 2012-05-25 | credit: NASAsource: http://www.youtube.com/watch?v=aszUiI6J-L8
ESA: Meteorology Via Satellite [3D converted] djxatlanta 2012-05-25 | In the coming weeks two meteorological satellites will be launched: MSG-3 from Kourou, French Guiana, followed by MetOp B from Baikonur, Kazakhstan.35 years after the launch of Meteosat, the first European weather satellite, Europe now has a full fleet of satellites with EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), delivering weather and climate-related satellite data, images and products, 24 hours a day, 365 days a year.The present system includes two generations of geostationary Meteosat satellites giving a global overview that is complemented by observations from the polar orbiting MetOp satellite.credit: ESAsource: http://multimedia.esa.int/Videos/2012/05/Meteorology-via-satellite
Earth From Space #024: Mississippi Delta [3D converted] djxatlanta 2012-05-25 | In the twenty-fourth edition of ESA's "From Earth From Space," a look is taken at the Mississippi River Delta, where the largest river in the United States empties into the Gulf of Mexico.credit: ESAsource: http://multimedia.esa.int/Videos/2012/05/Earth-from-Space-Mississippi-River-Delta
ESA: Unveiling Venus [3D converted] djxatlanta 2012-05-25 | It can be called the morning or evening star, depending on where you are or what time it is, but it is anything but a star. In fact, it is one of our nearest planetary neighbors. Venus and Mars may be Earth's close cousins, but they are oh-so different. Only now are we starting to peer through Venus' clouds to reveal the burning planet's secrets.credit: ESAsource: http://multimedia.esa.int/Videos/2012/05/ESA-Euronews-Unveiling-Venus
SOHO: Solar Proton Storm (2012.05.17) [720p] [3D converted] djxatlanta 2012-05-24 | An M5 flare and a CME (coronal mass ejection) unleashed a moderate proton storm of radiation and particles into space on May 17, 2012. The particles began smacking SOHO's LASCO C3 imager within 15 minutes of the flare: they appear as white streaks or what we call "snow." The CME is the billowing whitish cloud that heads off to the lower right. The next day another CME blossoms out to the left of the Sun. In these images the Sun is represented by a white circle, with the Sun blocked out by the blue occulting disk so that we can observe the faint structures in the corona beyond it. The bright object slowly moving left to right below the Sun is Jupiter. The video covers about 2 days of activity.credit: NASA / ESA / SOHOsource: http://sohowww.nascom.nasa.gov/pickoftheweek/old/18may2012
Envisat: Nea Kameni Volcano Ground Deformation [3D converted] djxatlanta 2012-05-23 | Evolution of ground deformation over Nea Kameni Volcano (Santorini, Greece) from March 2011 to February 2012. The animation was derived using data from Differential Interferometric Synthetic Aperture Radar analysis of Envisat's radar data. credit: Harokopio University of Athens/ESAsource: http://www.esa.int/esaEO/SEMEQUYWD2H_index_0.html
Tycho Crater Revisited (2012.01.15) [1080p] [3D converted] djxatlanta 2012-05-23 | The Lunar Orbiters photographed Tycho crater in 1966 and 1967 and first revealed the beautiful state of preservation of this ~80 km diameter impact crater. Geologists saw sharp, craggy slopes in the crater walls and central peak, some form of ponded liquid and preserved flows, and a labyrinth of fractures in the rough, flat floor. What liquid flowed and ponded inside and outside the crater? Initially geologists hypothesized that the Tycho impact event triggered an upwelling of lava, and the ponds and flows were frozen volcanic forms.Later it was determined that the hypothesized volcanic ponds and lakes and flows were indeed related to the formation of the crater, but not as volcanic eruptions of subsurface magma. Rather, they were accumulations of massive amounts of lunar rock that was melted as the Tycho asteroid (or comet) slammed into the Moon and released unimaginable amounts of kinetic energy, in an instant. It was only in 1960 that Gene Shoemaker and colleagues proved that Meteor crater (aka Barringer crater) near Winslow, Arizona, was formed by an asteroid impact. Thus the idea that many craters on the Moon (and Earth) were formed by impacts was only coming into widespread acceptance at the time of the Lunar Orbiter missions. Today we have a growing catalog of impact melt deposits from many young craters across the face of the Moon.credit: NASA / LRO / ASUsource: http://lroc.sese.asu.edu/news/?archives/572-View-From-The-Other-Side.html
PROBA-2: Partial Solar Eclipse ×4 (2012.05.20) [720p] [3D converted] djxatlanta 2012-05-21 | Extreme eastern Asia, western North America and a tiny strip across the Pacific Ocean were treated to an annular solar eclipse on 2012 May 20. In space, the ESA spacecraft PROBA-2 viewed the event as a partial solar eclipse. Due to the rapid orbit of the satellite around Earth, PROBA-2 was able to view the partial eclipse four times.credit: ESAsourece: http://proba2.oma.be/index.html/outreach/breve/solar-eclipse-20-21-may-2012
Magnetospheric Substorm [720p] [3D converted] djxatlanta 2012-05-20 | This animation shows a magnetospheric substorm, during which the reconnection causes energy to be rapidly released along the field lines causing the auroras to brighten.credit: NASA/Goddard Space Flight Center- Conceptual Image Labsource: http://svs.gsfc.nasa.gov/goto?20097
A Tour Of Supernova SN 2010JL [720p] [3D converted] djxatlanta 2012-05-20 | Why are some supernovas much more powerful than others? Astronomers are still trying to figure that out, but one new discovery may help answer the question. On November 3, 2010, a supernova was discovered in a galaxy located about 160 million light years from Earth. When astronomers used the Chandra X-ray Observatory to look at it, they found some very interesting clues. The Chandra data showed evidence that the shock wave formed by the supernova was, in fact, breaking through a cocoon of gas. This cocoon was probably formed when the star expelled its outer layers before finally collapsing on itself and exploding as a supernova. By observing this supernova just weeks after the initial explosion, scientists were able to learn more about this supernova and potentially others as they try to better understand how some stars die. credit: X-ray: NASA/CXC/Royal Military College of Canada/P.Chandra et al); Optical: NASA/STScI; Music: Riding Shotgunsource: http://chandra.harvard.edu/resources/podcasts/sd.html
ESOcast: Seeing Sharp Special 50th Anniversary Episode #3 [720p] [3D converted] djxatlanta 2012-05-20 | The third special episode of this series -- ESOcast 43 overall -- presents ESO's flagship facility: the Very Large Telescope (VLT). In this episode we discover the state-of-the-art technology behind this telescope, which has provided astronomers with an unequalled view of the Universe.To obtain the sharpest images of the sky, the VLT has to cope with two major effects that distort the images of celestial objects. The first one is mirror deformations due to their large sizes. This problem is corrected using a computer-controlled support system — active optics — that ensures that the mirrors keep their desired shapes under all circumstances. The second effect is produced by Earth's atmosphere, which makes stars appear blurry, even with the largest telescopes. Adaptive optics is a real-time correction of the distortions produced by the atmosphere using computer-controlled mirrors that deform hundreds of times per second to counteract the atmospheric effects.As one demonstration of its power the VLT's sensitive infrared cameras, helped by adaptive optics, have been able to peer through the massive dust clouds that block our view to Milky Way's core. The images, taken over many years, have allowed astronomers to actually watch stars orbiting around the monstrous black hole that lies in the center of our galaxy. It was even possible to detect energetic flares from gas clouds falling into the black hole.Watch this episode to discover more about why the Very Large Telescope is the planet's sharpest eye on the sky.credit: ESOsource: http://www.eso.org/public/videos/esocast43a
Earth From Space #023: Desert Growth djxatlanta 2012-05-19 | In the twenty-third edition of ESA's "Earth From Space," Saudi Arabia's agricultural development from 1984 to 2011 is examined.credit: ESAsource: http://multimedia.esa.int/Videos/2012/05/Earth-from-Space-Desert-growth
Astronaut André Kuipers: Our Fragile Planet [720p] [3D converted] djxatlanta 2012-05-19 | Observing Earth from far above, ESA astronaut André Kuipers is acting as a world ambassador for the World Wildlife Fund. This video message introduces the Living Planet Report. The Living Planet Report measures changes in biodiversity by tracking 9000 populations of more than 2600 of the world's species. André wrote the introduction to the report and is doing his part to show how fragile our world really is.André has been concerned about our planet since his last mission to the International Space Station in 2004. He has been sending us images that show the impact humans are having on our climate."We only have one Earth. From up here I can see humanity's footprint, including forest fires, air pollution and erosion -- challenges which are reflected in this edition of the Living Planet Report."
Global Precipitation Measurement Mission Teaser [720p] [3D converted] djxatlanta 2012-05-19 | The Global Precipitation Measurement (GPM) is an international satellite mission to provide next-generation observations of rain and snow worldwide every three hours. NASA and the Japan Aerospace Exploration Agency (JAXA) will launch a "Core" satellite carrying advanced instruments that will set a new standard for precipitation measurements from space. The data they provide will be used to unify precipitation measurements made by an international network of partner satellites to quantify when, where, and how much it rains or snows around the world.The GPM mission will help advance our understanding of Earth's water and energy cycles, improve the forecasting of extreme events that cause natural disasters, and extend current capabilities of using satellite precipitation information to directly benefit society. credit: NASA / Goddard Space Flight Centersource: http://svs.gsfc.nasa.gov/goto?10989
auroraus_iss_20120413HD.mov [1080p] [3D converted] djxatlanta 2012-05-19 | credit: NASAsource: http://eol.jsc.nasa.gov/Videos/CrewEarthObservationsVideos
eastus_iss_20120412HD.mov [1080p] [3D converted] djxatlanta 2012-05-19 | credit: NASAsource: http://eol.jsc.nasa.gov/Videos/CrewEarthObservationsVideos
caliaurora_iss_20120328HD.mov [1080p] [3D converted] djxatlanta 2012-05-19 | credit: NASAsource: http://eol.jsc.nasa.gov/Videos/CrewEarthObservationsVideos
libyanight_iss_20120327HD.mov [1080p] [3D converted] djxatlanta 2012-05-19 | credit: NASAsource: http://eol.jsc.nasa.gov/Videos/CrewEarthObservationsVideos
auroralights_iss_20120328HD.mov [1080p] [3D converted] djxatlanta 2012-05-19 | credit: NASAsource: http://eol.jsc.nasa.gov/Videos/CrewEarthObservationsVideos
sunsetchina_iss_20120413HD.mov [1080p] [3D converted] djxatlanta 2012-05-19 | credit: NASAsource: http://eol.jsc.nasa.gov/Videos/CrewEarthObservationsVideos
acrossus_iss_20120413HD.mov [1080p] [3D converted] djxatlanta 2012-05-19 | credit: NASAsource: http://eol.jsc.nasa.gov/Videos/CrewEarthObservationsVideos
oceanus_iss_20120325HD.mov [1080p] [3D converted] djxatlanta 2012-05-19 | credit: NASAsource: http://eol.jsc.nasa.gov/Videos/CrewEarthObservationsVideos
ESO: Elliptical Galaxy Centaurus A [720p] [3D converted] djxatlanta 2012-05-17 | The strange galaxy Centaurus A is pictured in a new image from the European Southern Observatory. With a total exposure time of more than 50 hours this is probably the deepest view of this peculiar and spectacular object ever created. The image was produced by the Wide Field Imager of the MPG/ESO 2.2-meter telescope at ESO's La Silla Observatory in Chile.Centaurus A, also known as NGC 5128, is a peculiar massive elliptical galaxy with a supermassive black hole at its heart. It lies about 12 million light-years away in the southern constellation of Centaurus (The Centaur) and has the distinction of being the most prominent radio galaxy in the sky. Astronomers think that the bright nucleus, strong radio emission and jet features of Centaurus A are produced by a central black hole with a mass of about 100 million times that of the Sun. Matter from the dense central parts of the galaxy releases vast amounts of energy as it falls towards the black hole.This Wide Field Imager (WFI) picture allows us to appreciate the galaxy's elliptical nature, which shows up as the elongated shape of the fainter outer parts. The glow that fills much of the picture comes from hundreds of billions of cooler and older stars. Unlike most elliptical galaxies, however, Centaurus A's smooth shape is disturbed by a broad and patchy band of dark material that obscures the galaxy's center.The dark band harbors large amounts of gas, dust and young stars. Bright young star clusters appear at the upper-right and lower-left edges of the band along with the red glow of star-forming clouds of hydrogen, while some isolated dust clouds are silhouetted against the stellar background. These features, and the prominent radio emission, are strong evidence that Centaurus A is the result of a merger between two galaxies. The dusty band is probably the mangled remains of a spiral galaxy in the process of being ripped apart by the gravitational pull of the giant elliptical galaxy.The new set of images from WFI include long exposures through red, green and blue filters as well as filters specially designed to isolate the light from glowing hydrogen and oxygen. The latter help us to spot the known optical jet features around Centaurus A, which were barely visible in a previous image from the Wide Field Imager.Extending from the galaxy to the upper left corner of the image are two groups of reddish filaments, which are roughly lined up with the huge jets that are prominent in radio images. Both sets of filaments are stellar nurseries, containing hot young stars. Above the left side of the dusty band, we find the inner filaments, lying about 30,000 light-years away of the nucleus. Further out, around 65,000 light-years away from the galaxy's nucleus and close to the upper left corner of the image, the outer filaments are visible. There is also possibly a very much fainter trace of a counter jet extending to the lower right.Centaurus A has been extensively studied at wavelengths ranging from radio all the way to gamma-rays. In particular, radio and X-ray observations have been crucial for studying the interaction between the energetic output of the central supermassive black hole and its surroundings. Studies of Centaurus A with ALMA are just beginning.Many of the observations of Centaurus A used to make this image were taken to see whether it was possible to use ground-based surveys to detect and study variable stars in galaxies like Centaurus A outside the local group. More than 200 new variable stars in Centaurus A were discovered.credit: ESO / Nick Risinger / Disasterpeace (music)source: http://www.eso.org/public/news/eso1221
SDO: Dancing Solar Plasma (2011.09.25) [2048p] [3D converted] djxatlanta 2012-05-16 | credit: NASA/Goddard Space Flight Center Scientific Visualization Studiosource: http://svs.gsfc.nasa.gov/goto?3945
Seasonal Pulse of Snow and Sea Ice [1080p] [3D converted] djxatlanta 2012-05-16 | Snow and sea ice in the Northern and Southern Hemispheres pulse at exact opposite times of year, constantly out of phase. credit: NASA/Goddard Space Flight Center Scientific Visualization Studiosource: http://svs.gsfc.nasa.gov/goto?3944
Aqua MODIS: Science And Beauty [720p] [3D converted] djxatlanta 2012-05-16 | Beautiful images from the MODIS instrument on NASA's Aqua and Terra satellites are used by people all over the world every day. But MODIS is about more than just pretty pictures -- the instrument's contributions to science include a better understanding of the Earth's cloud cover, aerosols, phytoplankton levels, and land cover.credit: NASA/Goddard Space Flight Centersource: http://svs.gsfc.nasa.gov/goto?10893
NASA: Annular Solar Eclipse Preview (2012.05.20) [720p] [3D converted] djxatlanta 2012-05-15 | A "ring of fire" solar eclipse is coming to the USA on Sunday, May 20, 2012. It's the first annular eclipse visible from the contiguous United States in almost 18 years.credit: NASAsource: http://science.nasa.gov/science-news/science-at-nasa/2012/15may_sunday
Frosted Ground in Mars Southern Hemisphere in Late Fall [720p] djxatlanta 2012-05-14 | This image was acquired within two weeks of the winter solstice, when the subsolar latitude is at its northernmost position.At this location (latitude 52 S) and time the sun barely peeks over the horizon in the mid-afternoon when MRO passes overhead, and carbon dioxide frost is building up on most of the surface.In enhanced color, the frost appears blue. Slopes that face north receive more heat from the sun and appear reddish, indicating less frost is present. There may also be a small amount of water frost on the surface.Mars is very different from Earth in that its main atmospheric component can condense onto the surface. The nitrogen that dominates Earth's atmosphere never condenses onto the surface, although nitrogen in the atmospheres of frigid Triton and Pluto do form surface frost and ice.credit: NASA/JPL/University of Arizonasource: http://www.uahirise.org/ESP_026388_1280
Youthful Martian Crater and Its Ejecta [720p] [3D converted] djxatlanta 2012-05-14 | In this image, we can clearly see the ejecta of this crater, and that tells us the crater appears young and well-preserved. "Ejecta" refers to the material that is excavated from an initial impact and settles back to the surface.One way we describe a crater as being young is to observe the crater rim. If the rim of a crater doesn't appear that eroded, we often call it "sharp" and "young," even though the impact may have occurred an extremely long time ago.Given the latitude and proximity to gullies on mesas and massifs in this region, there could also be mid-latitude-type gullies in this crater. At HiRISE resolution, we can get a better look at the ejecta, its distribution and possibly characterize any subsequent modifications we can see in the crater walls.credit: NASA/JPL/University of Arizonasource: http://www.uahirise.org/ESP_026099_2320
Naar Crater on Mars [720p] [3D converted] djxatlanta 2012-05-14 | This impressive crater, that stretches well across the width of the HiRISE camera's footprint, is notable for its sharp rim and steep walls.There are also some interesting features on the crater floor, not to mention the ejecta blanket, the material surrounding the crater as a result of the original impact. In fact, when viewing this area with other images that have a wider range of view than HiRISE, the ejecta blankets for the craters located here take on the appearance of a flower.This pattern of ejecta is common with Martian craters. The distinct sharp ends to the flower-shaped ejecta has led many scientists to suggest that water and ice were engulfed in the ejecta as it was thrown from the crater.The crater is named after a town in Egypt.credit: NASA/JPL/University of Arizonasource: http://www.uahirise.org/ESP_025691_2030
Sculpting Dunes in Ganges Chasma [720p] [3D converted] djxatlanta 2012-05-14 | When dunes are located in a complex topographical area such a canyon, they become ideal candidates for detecting changes to their shapes and sizes over time.The dunes here in Ganges Chasma--a canyon that's on the eastern end of Valles Marineris--could be strongly influenced by winds, and it's important not to underestimate the erosional power of wind. Because HiRISE has such good resolution, we can track these changes over time to tell us which way a dune is moving, how much, and in what direction. From these observations we can decipher present-day atmospheric processes.credit: NASA/JPL/University of Arizonasource: http://www.uahirise.org/ESP_026100_1725
