This week, Santa is bringing you a big box of Moon rocks, and not just any old moon rocks; brand new ones that could provide new answers about the heavenly body that will serve as our stepping stone to Mars.

We're also revisiting one of our most memorable interviews from this past year, with NASA Glenn Deputy Director, Sue Motil. Listen to find out what they're doing in Cleveland to prepare for a return to the Moon, and the technology that will propel astronauts to Mars and beyond.

Susan M. Motil, Deputy Director, John H. Glenn Research Center