Really hard questions. And in that report from nasa tv we heard from is twenty. Twenty program scientist mitch. Short in food and kim fowley by van crandon dunk from the university of new south. Wales theresa for narrow from the european space agency's xm mass mission and director of nasa's mars exploration program. Jim watson this space time still to come a kilometer wide asteroid passes the earth and later in the science report exposure to artificial light at night linked teen sleep mood and anxiety disorders all that and more still.