http___metro-portal.hr_curiosity-krece-po-dokaze-o-zivotu-na-marsu_65710_1.xml
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PASADENA, Calif.— A stunning new video shot by NASA's Mars rover Curiosity captures the huge robot's nail-biting journey to the Red Planet's surface Sunday (Aug. 5). The Curiosity rover's landing video was taken by the Mars Descent Imager camera, or MARDI, which snapped hundreds of photos while the six-wheeled robot was barreling through the Martian atmosphere during its "seven minutes of terror" landing attempt late Sunday night (Aug. 5 PDT; Aug. 6 EDT). The rover team combined 297 of these shots into a 1-minute video that shows some of the unprecedented descent's most dramatic moments. Highlights include the separation of Curiosity from its heat shield, and billowing dust clouds raised as the rover's rocket-powered sky crane — which lowered Curiosity to the ground on cables — neared the Martian surface. The first images were taken about 2.5 minutes before Curiosity touched down on the surface of Mars. In one of them, the heat shield is seen in the frame, falling away from the spacecraft. The photo, which was taken about three seconds after the heat shield separated, is among the first color images Curiosity sent back from Mars, NASA officials said. The video of Curiosity's descent is a bit fuzzy, because the MARDI images were compressed substantially before Curiosity sent them back to Earth. The full-resolution photos should be spectacular, but they'll take a while to trickle in, said MARDI principal investigator Mike Malin. [Gallery: Mars Rover Curiosity Landing Success ] "That video would be just exquisite in full frame," Malin, of Malin Space Science Systems in San Diego, told reporters here at NASA's Jet Propulsion Laboratory today (Aug. 6). "It'll be a couple of weeks before we really start having the pieces for it." MARDI, which sits on the bottom of the rover's body and faces downward, is one of Curiosity's 17 cameras. Its main job was to take footage of the rover's descent to its landing site — the 96-mile-wide (154-kilometer) Gale Crater — to give the mission team a bird's-eye view of the terrain Curiosity will explore. Curiosity is the heart of NASA's $2.5 billion Mars Science Laboratory mission (MSL), which seeks to determine if the Red Planet can, or ever could, support microbial life. The rover has also already beamed home images taken by some of its other cameras. For example, a shot snapped by one of the rover's eight Hazard Avoidance Cameras, or Hazcams, shows Gale and its mysterious central mound, the 3-mile-high (5-kilometer) Mount Sharp. MSL scientists plan to send Curiosity partway up Mount Sharp, to study the many layers of rock that hold a record of perhaps a billion years of changing environmental condtitions on Mars. However, the car-size rover is not ready to tackle Mount Sharp's slopes quite yet. The mission team will spend the next few months checking out Curiosity's systems and 10 science instruments, which will be gathering data all the while. Curiosity probably won't start driving for the first time for a few weeks, and it likely won't begin its trek toward Mount Sharp for another two or three months, mission managers have said. This story was provided by SPACE.com, a sister site to LiveScience. Visit SPACE.com for complete coverage of NASA's Mars rover landing. Follow senior writer Mike Wall on Twitter @michaeldwall or SPACE.com @Spacedotcom. We're also on Facebook and Google+.
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Curiosity kreće po dokaze o životu na Marsu Misija na Mars trebala bi poletjeti iz baze ratnog zrakoplovstva u Cape Canaveralu na Floridi u subotu, 26. studenog Nakon gotovo deset godina planiranja, višestrukog prekoračenja troškova i dvogodišnje odgode, američka svemirska agencija NASA napokon je spremna da krajem ovoga tjedna lansira svoj sljedeći Marsov rover. Rover Curiosity, koji je veličine automobila, središnji je element NASA-ine misije Marsov znanstveni laboratorij (MSL), vrijedne 2,5 milijarde dolara od čega je 1,8 milijardi dolara utrošeno za razvoj. Misija na Mars trebala bi poletjeti iz baze ratnog zrakoplovstva u Cape Canaveralu na Floridi u subotu, 26. studenog, nakon 24-satne odgode zbog problema s akumulatorima rakete, objavila je NASA. Lansiranje dolazi dvije godine kasnije od prvotnih planova ekipe MSL-a, što je u konačnici povećalo troškove misije za 56 posto. No, Curiosity je sada na lansirnoj rampi, smješten na vrhu rakete-nosača Atlas 5 i većina očiju sada je usmjerena na budućnost rovera, odnosno njegovo traganje za dokazima podržava li Mars život mikroba, i je li ranije podržavao. "Ovo je stroj iz snova za znanstvenike koji proučavaju Mars", rekao je novinarima Ashwin Vasavada, zamjenik vođe projekta MSL-a u NASA-inom Laboratoriju za mlazni pogon (JPL) u Pasadeni, Kalifornija. "Taj rover nije samo tehnički najsposobniji rover ikada poslan na drugi planet, to je zapravo najsposobnijih znanstveni istraživač koji smo ikada poslali u svemir", naglasio je Vasavada. NASA je počela planiranje misije MSL-a u 2003. Tijekom proteklih osam godina, znanstvenici i inženjeri razvili su, izgradili i testirali Curiosity, robotizirano vozilo koje će planetarna istraživanja podići na novu razinu. Težak jednu tonu, Curiosity je pet puta teži od svojih neposrednih prethodnika na Marsu, rovera blizanaca Spirit i Opportunity, koji su sletjeli na Crveni planet u siječnju 2004. u potrazi za znakovima nekadašnjeg djelovanja vode. Dok su Spirit i Opportunity svaki nosili po pet znanstvenih instrumenata, Curiosity se može pohvaliti s deset, kao i s bušilicom, koja će mu omogućiti pristup unutrašnjosti Marsovih stijena. Veliki rover će koristiti svu tu opremu kako bi se ocijenila prošla i sadašnja sposobnost Marsa da podržava život. On će tragati za ugljikovim spojevima - gradivim blokovima života kakvog poznajemo, i procijeniti kakav je Crveni planet bio davno prije. MSL nije misija za otkrivanje života na Marsu, ali će postaviti temelje za buduće napore koji bi mogli biti usmjereni na dokaze o mikrobnim Marsovcima, rekli su dužnosnici. "Mi premošćujemo jaz od 'traganja za vodom' do potrage za znacima života", rekao je Doug McCuistion, voditelj NASA-ina programa za istraživanje Marsa. U subotu će s lansiranjem započeti 8,5-mjesečno putovanje na Mars, a dolazak letjelice MSL-a na Crveni planet planirano je u kolovozu 2012.