NASA has decided to send two more helicopters to Mars following the success of their initial mission. The mission, which NASA is conducting along with the European Space Agency, is aimed at bringing back rocks from Mars to further the study into the red planet. The rocks, which were brought back in the initial mission, are currently being studied with help of state-of-the-art laboratory equipment. “We have a path forward using a revised and innovative architecture,” Thomas Zurbuchen, associate administrator for NASA’s science directorate, told the media.