saturday working on a replacement for a broken cooling pump. without the pump, some of the station s important electronics have been shut down. the second space walk was originally scheduled for monday, but that s being delayed while they make adjustments to one of the space suits. i m rosa flores, you re watching cnn, the most trusted name in news. tonight on back to the beginning, did the exodus happen? can we see the ark of the covenant? soon, the world as we know it will come to an end. come with us as we continue our epic journey around the world and across time, as a war correspondent who has seen everything that tears us apart christiane amanpour in israel. searches for what unites us. christianity, judaism, and