... APOD: 2006 September 26- Mars Express: Return to Cydonia . ... Mars Express , DLR Explanation: The unusual stone mesas of the Cydonia region on Mars are quite striking in appearance. Last week, the Mars Express project released a new close-up image of a portion of the Cydonia region on Mars. This new image , taken by the robotic Mars Express spacecraft now orbiting Mars , shows an area about 90 kilometers wide. ... Publications with keywords: Mars - Mars-Express . ... Victoria Crater on Mars . ...

... June 3, 1998 . Martian Crater Shows Evidence of Dried Pond . ... Explanation: Did a pond once exist in this Martian crater? Recent photographs by the spacecraft Mars Global Surveyor , currently in orbit around Mars , show features unusual for Mars yet similar to a dried pond on Earth . Previously, much evidence suggested the effects of ancient channels of flowing water on Mars, but less evidence had been found for dried pools of water . ... About APOD > . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Planets . ... Of the worlds in our Solar System (gas giants excluded) only Venus has a completely ice-free surface. ... The continued melting of polar ice and consequent freshening of the waters of the Arctic Ocean might stop some ocean currents €аaffecting the lives of hundreds of millions of people.€а Studying the ice worlds of space helps us understand the part that ice has played in the history of our own planet and our present day existence on it. ...

... STScI-PRC99-27 A CLOSER ENCOUNTER WITH MARS Taking advantage of Mars's closest approach to Earth in eight years, astronomers using NASA's Hubble Space Telescope have taken the space-based observatory's sharpest views yet of the Red Planet. ... In these views the north polar cap is tilted toward the Earth and is visible prominently at the top of each picture. ... Dark sand dunes that surround the polar cap merge into a large, dark region called Acidalia. ...

... Feeding the Monster: Gas Caught in its Death Spiral into a Massive Black Hole . ... Stromlo Professor Mike Dopita have used the Hubble Space Telescope to discover how a massive Black Hole in a nearby galaxy feeds itself. ... Earlier Hubble Telescope data obtained by another team member, Professor Holland Ford of Johns Hopkins University in Baltimore, Maryland, had found a disk of gas rushing around the Black Hole at a speed of 500 kilometers a second. ...

Clay minerals show green in this false-color image made with two of the Mars Reconnaissance Orbiter's instruments. The region is Nili Fossae, and was shot on October 4, 2006. Features as small as 60 feet (18 meters) are resolved in the multicolor CRISM image, which reveals mineralogy; the HiRISE background topography, taken in 3 colors, shows features as small as 1 foot (30 centimeters) across. ... Reddish areas indicate dunes of sand rich in the mineral olivine. ...

Meteors are more than just pretty lights in the sky. Since the majority of meteor-producing meteoroids originate from comets, they contain invaluable information about these objects not otherwise obtainable. ... One such possibility is the planet Mars. ... Taking into account the slower average speed of incoming material at the heliocentric distance of Mars from the Sun, a meteoroid of the same mass entering the martian atmosphere at 30km/sec would produce a meteor +0.5 mag fainter than at Earth. ...

... Data Reduction FAQ > A number of OmegaCAM filters show vignetting in their central regions. What are the causes for this and what are the dimensions of these features? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... ESO HST Image Galleries . ... ESO Data Access Policy . ... ESO Science Newsletter . ... A number of OmegaCAM filters are not monolithic, but consist of four segments (each covering 8 detectors) that have a central cross-shaped support structure. ... Filter . ...

delay-doppler image of the Maxwell Montes region of Venus, taken using the S-Band (2380 MHz or 12.6 cm) radar transmitter and the 305m dish at the Arecibo Observatory in Arecibo, Puerto Rico in June of 1988. The horizontal resolution is about 2 km. ... This delay-doppler radar image shows craters near the North pole of Mercury. The resolution of this image is about 15 km. ...

The aromatic features in M101 were studied spectroscopically and photometrically using observations from all three instruments on the Spitzer Space Telescope. The global SED of M101 shows strong aromatic feature (commonly called PAH feature) emission. ... This implies that the weakening of the aromatic emission in massive star-forming regions is due primarily to processing of the dust grains in these environments, not to differences in how they form. ...

... The awsome spectacle of a brilliant comet, with its long ghostly tail streaming behind it, is a rare event. ... Only one other comet, Comet Halley, was seen so far from the Sun, giving scientists an opportunity to watch it as it slowly warmed up and sprouted a tail. ... Comets are the Rip Van Winkles of the solar system -- mini-worlds that have changed little during their 4.5-billion-year nap far from the Sun. ... Observing Comets . ... Once, comets inhabited the entire solar system. ...

... The orbits as follows are considered: INTERBALL Tail Probe (IB_TAIL) & Auroral Probe (IB_AUR), GEOTAIL (NASA/ISAS), and POLAR (NASA). ... The situation investigation aim is to select the following favourable spatial positions (FSP) : . ... FSP3 : That part of the FSP1 & FSP2 time intervals, which corresponds to the magnetic conjugations of the any couple of the considered spacecraft. ... The polar diagram plot . ... The geocentric distance (GCD) of the 4 spacecraft as a function of the time. ...

Astronomy Discussion Forums . Forums: . ... God and Science ћ SETI ћ Software ћ UFO ћ XEphem . ... Discussion Forums . ... A Link To A Book Showing "ruins" On Mars . Forum List | ... Post Message | ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... The relationship of the mass and the observed galactocentric distance R -- (a), and that of the mass and the total dissipation velocity n taken from Gnedin, Ostriker (1997) -- (b). The dotted line in diagram (a) shows the "cone of survival" according to the paper by Surdin and Arkhipova (1998) . ... The solid line is a regression stright line for the main sequence of clusters, and the dotted line parallel to it separates the sequence of clusters of anomalously small mass shown by open triangles. ...

Enceladus . Saturn II . Enceladus [en-SELL-ah-dus] is one of the innermost moons of Saturn. ... Parts of Enceladus shows craters no larger than 35 km in diameter. ... This Voyager 2 mosaic of Enceladus was made from images taken through the clear, violet and green filters on August 25, 1981, from a distance of 119,000 kilometers (74,000 miles). ... Some regions of Enceladus show impact craters up to 35 kilometers (22 miles) in diameter, whereas other areas are smooth and uncratered. ...

... They cover a period of 4 days in which the Supernova continues to rise in brightness (what astronomers call magntiude). ... First Image Taken on March 11 at 8:22 UT. Second Image Taken on March 12 at 8:52 UT. ... The supernova is the same brightness as in the previous image taken 2 hours ago . ... This image, taken 24 hours after the previous image, shows the supernova to be another 0.21mag (or about 25%) brighter. ... Hopefully the images do show that the brightness of the Supernova is changing. ...

... Sun images . ... Active areas . June : 2015 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Beta-Gamma . ... Beta . ... Coordinates and other characteristics of active regions are issued for June 09, 2015 00:31 UT The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates and other characteristics of active regions are issued for June 09, 2015 00:31 UT . ...

. Next: *imcnts* - Find background Up: Regions and Source Parameters Previous: *pllist* - Look at . A region file can be made which defines the region enclosed within a specific intensity level contour. First the image must be smoothed: . cl> xray xr> xspatial xs> imsmooth ``xdata$snr.qp(400:600,400:600)'' snr gaus 5 # output is snr_smo.imh xs> isoreg xnr_smo snr 0.2 # output is snr_iso.pl xs> pllist snr_iso.pl # shows the mask. rsdc@cfa.harvard.edu . 1998-06-10

Next: Observations Up: The Nuclear Region: HI Previous: The Nuclear Region: HI . There are mainly two questions to be addressed: 1) What causes the large velocity width (several hundred kms -1 ) of the absorption lines detected against the nuclear regions of galaxies? 2) Why are the absorption line widths observed against the nuclear radio continuum similar to those measured in emission over the whole extent of the galaxy? ...

... In the central equatorial Pacific, the large area of warmer than normal sea surface temperatures (large area outlined in red with a white center) associated with growing El Nino conditions has recently migrated eastward toward the coast of South America. http://physicaplus.org.il/zope/home/en/1105389911/1113511992_en На этой странице есть презентации с конференции, где активно обсуждалась . ... Картинка со страницы со статьей Шавива. http://physicaplus.org.il/zope/home/en/1105389911/1113511992_en . ...