Photo taken by Vanessa O’Brien (using a timer) on October 4, 2011 near the summit of Shishapangma, the world’s 14th highest mountain climbing from Tibet.

Wednesday, Head for the Summit with Chuck, Gary, Alan Oram and World-Record Breaking Mountaineer Vanessa O’Brien

Gary O’Reilly and Chuck Nice take to the mountains as they investigate mountaineering with world-class climber Vanessa O’Brien and Alan Oram, D.O.

StarTalk Radio Show by Neil deGrasse Tyson