... A Dark Sand Dune on Mars . ... Credit Copyright: NASA / JPL - Caltech Explanation: What is that dark sand dune doing on Mars? NASA 's robotic rover Curiosity has been studying it to find out, making this the first-ever up-close investigation of an active sane dune on another world. Named Namib Dune , the dark sand mound stands about 4 meters tall and, along with the other Bagnold Dunes, is located on the northwestern flank of Mount Sharp . ... NASAs Curiosity Rover at Namib Dune (360 View) . ...

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• Seasonal Dark Streaks on Mars
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... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Le 27 ao†Ёt, Mars ne d†йtr†‡nera toujours pas la Lune . ... Le fait que la plan†иte Mars apparaisse plus grosse que la Lune dans le ciel nocturne est un canular d†йj†а d†йsamorc†й en d†йtail sur le site de Ciel et Espace dans un article du 18 ao†Ёt 2009 . ... Etat du ciel...

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... 2015 September 30 . Seasonal Streaks Point to Recent Flowing Water on Mars . ... Explanation: What creates these changing streaks on Mars? ... After much study , including a recent chemical analyses , a leading hypothesis has emerged that these streaks are likely created by new occurrences of liquid salty water that evaporates as it flows. ... Retrospective: Today in APOD History . ... About APOD | ...

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• APOD: 2016 January 19 - A Dark Sand Dune on Mars
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• APOD: 2011 August 8 - Seasonal Dark Streaks on Mars

The nasa.gov site requires that JavaScripts be enabled in your browser. ... Contact NASA . ... The term "astronaut" derives from the Greek words meaning "space sailor," and refers to all who have been launched as crew members aboard NASA spacecraft bound for orbit and beyond. Since the inception of NASA's human space flight program, we have also maintained the term "astronaut" as the title for those selected to join the NASA corps of astronauts who make "space sailing" their career profession. ...

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• Astronaut Bio: Jay Apt 06/1997
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... Current APO Weather . ... Search Site . ... Information for New Users . ... Technical Staff pages . Night Logs and Mailing Lists (maintained by APO) . ... Technical Documents and Database Search . ... Observer's Documentation and Procedures . ... Problem Reporting and APO Technical Documents Database Search . ... APO Drawing/Document Management Procedures . ... APO Technical Documents Database Search . Home Astrophysical Research Consortium . ... Mail Lists (maintained by APO) . ...

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Phobos . ... Phobos [FOH-bohs] (fear) is a moon of Mars and was named after an attendant of the Roman war god Mars. ... Phobos shows striated patterns which are probably cracks caused by the impact event of the largest crater on the moon. ... Grooved fractures caused from the impact that created Stickney extend away from the crater. ... Because Phobos is only 28 by 20 kilometers (17 by 12 miles), the moon must have been nearly shattered from the force of the impact that caused the giant crater. ...

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• NASA's Observatorium--Image Gallery: Stars
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Phobos . Mars I . Phobos [FOH-bohs] (fear) is a moon of Mars and was named after an attendant of the Roman war god Mars. ... Phobos shows striated patterns which are probably cracks caused by the impact event of the largest crater on the moon. ... The striking feature in this image is the giant Stickney crater. ... Courtesy NASA) . ... Because Phobos is only 28 by 20 kilometers (17 by 12 miles), the moon must have been nearly shattered from the force of the impact that caused the giant crater. ...

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Astronotes Armagh Planetarium's Stellar Blog! ... This image combines orbital imagery with 3-D modelling to show flows that appear in spring and summer on a slope inside Mars' Newton crater. ... Warm season flows on a slope in Newton Crater, possible evidence of salty liquid water active on Mars today. Image credit: NASA) . ... Frozen water is common on and under the surface of Mars but these images are the best evidence to date for the presence of liquid water on the Martian surface today. ...

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I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

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... Lagrangian Point or Bust! ... A solar-monitoring telescope is being placed "in orbit around L1." The James Webb Space Telescope (successor to the Hubble Space Telescope) is planned for launch in the year 2011 to "L2." ... The future of the Lagrangian points as space destinations seems assured as new generations of space-based observatories in the planning stage seriously consider using L2 halo orbits because of their attractive operational environment. ... 4 yrs . ... 1 yr . ... Origins . ...

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• ASP: Red Rover?s Rocky Road
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... Вот уже 10 лет работает система NASA ADS . ... Причем для большинства статей доступны абстракты (краткие содержания), а для основных журналов и конфереций - полные тексты статей (иногда это, правда, требует институтской подписки на данный журнал). ... К нему подключают Архив электронных препринтов. ... Благодаря NASA ADS и Архиву препринтов не надо бежать в библиотеку и рыться в поисках нужной статьи. ... Самая большая лента астрономических новостей: . ...

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... Tonight's Sky . ... Why Join? ... NASA joins ESAт??s "dark universe" mission . The mission will study the evolution of our universe and the dark matter and dark energy that influence its evolution in ways that still are poorly understood. ... NASA has joined the European Space Agencyт??s (ESA) Euclid mission т?? a space telescope designed to investigate the cosmological mysteries of dark matter and dark energy. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

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• NASA's Dawn spacecraft enters orbit around asteroid Vesta | Astronomy.com
• Bright planets meet at dusk | Astronomy.com
• Photo from NASA Mars Orbiter shows wind's handiwork | Astronomy.com