improved durability and heat dissipation and are both x-ray proof and shock-proof. the 'cobalt label' cards start at $ for the gb model ( adorama , b&h ) and the 'gold label' cards start at $ for the gb model ( b&h ). all cards come with a three-year warranty and can be found at authorized prograde...
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group of astronomers has calculated the hubble constant to be mph per million light-years ( km/s/mpc). the discrepancy seems small, but there is no overlap between the independent values and neither side has been willing to concede major mistakes in its methodology. the new measurement, made by the h lenses...
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