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Info Mag Koyal Group Spirit and Opportunity Top 10 Decade 1 Discoveries Top Rover Scientist Tells Universe Today A Top 10 Decade 1 Discovery by NASA's Twin Mars Exploration Rovers Carbonate-Containing Martian Rocks discovered by Spirit Mars Rover Spirit collected data in late 2005 which confirmed that the Comanche outcrop contains magnesium iron carbonate, a mineral indicating the past environment was wet and non-acidic, possibly favorable to life. This view was captured during Sol 689 on Mars (Dec. 11, 2005). The find at Comanche is the first unambiguous evidence from either Spirit or Opportunity for a past Martian environment that may have been more favorable to life than the wet but acidic conditions indicated by the rovers' earlier finds. Credit: NASA/JPL-Caltech/Cornell University January 2014 marks the 10th anniversary since the nail biting and history making safe landings of NASA's renowned Mars Explorations Rovers - Spirit and Opportunity - on the Red Planet barely three weeks apart during January 2004. Due to their completely unforeseen longevity, a decade of spectacular and groundbreaking scientific discoveries continuously flowed from the robot sisters that have graced many articles, magazine covers, books, documentaries and refereed scientific papers. What are the Top 10 Decade 1 discoveries from Spirit and Opportunity? Find out below what a top Mars rover team scientist told Universe Today! Ray Arvidson, the rovers Deputy Principal Investigator and professor at Washington University in St. Louis, has kindly shared with me his personal list of the Top 10 discoveries from Spirit and Opportunity for the benefit of readers of Universe Today. The Top 10 list below are Ray's personal choices and does not necessarily reflect the consensus of the Mars Explorations Rover (MER) team. First some background. The dynamic duo were launched on their interplanetary voyages from Cape Canaveral Florida atop Delta II rockets during the summer of 2003. The now

Perhaps it was too good to be true. Two months ago, a team of cosmologists reported that it had spotted the first direct evidence that the newborn universe underwent a mind-boggling exponential growth spurt known as inflation. But last week a new analysis suggested the signal, a subtle pattern in the afterglow of the big bang, or cosmic microwave background (CMB), could be an artifact produced by dust within our own galaxy. "We're certainly not retracting our result," says John Kovac, a cosmologist at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts, and co-leader of the team, which used a specialized telescope at the South Pole known as BICEP2. Others say the BICEP team has already lost its case. "At this time, I think the fair thing to say is that you cannot claim detection-period," says Paul Steinhardt, a theoretical physicist at Princeton University. From 2010 through 2012, BICEP2 peered at a small patch of the CMB to measure the polarization of the microwaves as it varies from point to point. On 17 March, BICEP researchers announced at a press conference in Cambridge that they had spotted ultrafaint pinwheel-like swirls in the sky. Those swirls, or B modes, are most likely traces of gravitational waves rippling through space and time during the 10-32 seconds that inflation lasted, the BICEP team says, and they fulfill a key prediction of the theory of inflation. Many cosmologists hailed the detection as a smoking gun for that theory.