NASA’s final tally shows spacecraft returned double the amount of asteroid Bennu rubble
NASA finally has counted up all the asteroid samples returned by a spacecraft last fall — and it's double the rubble return goal. Officials reported Thursday that the Osiris-Rex spacecraft collected 121.6 grams (4.29 ounces) of dust and pebbles from asteroid Bennu. That's just over half a cup and the biggest cosmic haul ever from beyond the moon.It took NASA longer than expected to pry open the sample container because of stuck fasteners. The black, carbon-rich samples — the first ever collected from an asteroid by NASA…