It was both a high drama rescue and a defining moment for implements of oral hygiene. During a hastily scheduled six-and-a-half hour spacewalk yesterday, a NASA astronaut and her Japanese counterpart fixed the broken $150 billion dollar International Space Station. Key to their success: a toothbrush.
After one failed attempt to remove a broken cooling pump on Saturday, a second attempt has succeeded. In a seven-and-a-half-hour spacewalk, Doug Wheelock and Tracy Caldwell Dyson managed to unhook the ammonia line that was spewing frozen NH3 crystals last time, then pry off the broken pump with a grapple bar. Whew.