http___metro-portal.hr_sonda-dawn-usla-u-orbitu-veste_61389_1.xml
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Galileo image of Gaspra Click on image for full size NASA/JPL Asteroids Asteroids are small bodies that are believed to be left over from the beginning of the solar system 4,600 million years ago. They are rocky objects with strange shapes up to several hundred km across, but most are much smaller. Many thousands of asteroids lie in a belt between Mars and Jupiter. Scientists think that this debris may be the remains of an early planet, which broke up early in the solar system. Several thousand of the largest asteroids in this belt have been given names. Shop Windows to the Universe Science Store! The Fall 2009 issue of The Earth Scientist , which includes articles on student research into building design for earthquakes and a classroom lab on the composition of the Earth’s ancient atmosphere, is available in our online store You might also be interested in: Anthony Wesley is an astronomer in Australia. One night in July 2009, Wesley noticed a dark spot on Jupiter that hadn't been there before. He had discovered the remains of a huge impact on Jupiter! A comet...more Scientists found a satellite orbiting the asteroid, Eugenia. This is the second one ever! A special telescope allows scientists to look through Earth's atmosphere. The first satellite found was Dactyl....more NASA is going to send a spacecraft to visit an asteroid. Two countries will work on the space mission - Japan and the United States. The name of the asteroid is Nereus. Nereus is a small asteroid. It is...more Did you know that asteroids can crash into the Earth? Don't worry, it probably won't happen, but there is a chance. So scientists are watching as many asteroids as they can, just in case one heads to...more Lutetia is a medium-sized asteroid. It orbits the Sun in the main asteroid belt. The asteroid belt is between the planets Mars and Jupiter. Lutetia was discovered by Hermann Goldschmidt in Paris in 1852....more Did we come from Mars? Scientists say that tons of rocks came to Earth from Mars many years ago. These rocks broke off of Mars when asteroids ran into it. They say that tiny organisms called microbes...more The NEAR spacecraft has been in orbit around the asteroid Eros since Valentine's Day of last year. That was the first time a spacecraft ever orbited an asteroid! Now NEAR will attempt another first --...more
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Sonda Dawn ušla u orbitu Veste Dawn je prva letjelica koja kruži u orbiti jednog objekta u glavnom asteroidnom pojasu između Marsa i Jupitera Robotska sonda NASA-e nakon četiri godine putovanja ušla je u orbitu asteroida Veste kako bi počela proučavanje drugog najvećeg objekta u asteroidnom pojasu između Marsa i Jupitera, priopćila je u nedjelju NASA, a prenosi Hina. Sonda "Dawn" poslala je signal kontroli misije u Pasedeni kako bi potvrdila ulazak u orbitu Veste, udaljene 188 miliona kilometara od Zemlje. Dawn je prva letjelica koja kruži u orbiti jednog objekta u glavnom asteroidnom pojasu između Marsa i Jupitera i također će biti prvi svemirski brod koji će obići dvije lokacije u Sunčevom sustavu ne računajući Zemlju, navodi NASA. "Proučavanje asteroida Veste predstavlja veliko znanstveno dostignuće i također ukazuje na buduća odredišta na koja će ljudi putovati idućih godina", izjavio je administrator NASA-e Charles Bolden u priopćenju. Sonda je lansirana prema Vesti 2007. godine u misiju ispitivanja nastanka Sunčevog sustava prije 4,5 milijardi godina. Cijena misije je 466 milijuna dolara. Dawn će proučavati asteroid punih godinu dana, a zatim će u srpnju 2012. godine krenuti prema drugom odredištu - patuljastom planetu Cereri. Vesta i Cerera dva su najveća protoplaneta Sunčeva sustava. To su stjenovita tijela koja koja nemaju dovoljnu masu da bi bila proglašena planetima. Oba se nalaze u pojasu između Marsa i Jupitera. "Radi se o dva posljednja neistražena svijeta u našem sustavu", rekao je voditelj projekta Robert Mase. Znanstvenici vjeruju da je Vesta sa svojom željeznom jezgrom i mogućim tokovima lave sličnija Zemlji ili Mjesecu od bilo kojeg drugog asteroida iz ovog pojasa. Cerera, iako blizu Veste, mnogo više nalikuje na Jupiter ili Saturn.