More Science Waiting for Liftoff A rocket launch is a riveting sight. Just don't count on the countdown By W. Wayt Gibbs COURTESY OF BOEING THIS ARTICLE IS ONLY AVAILABLE AS A PDF. Buy this digital issue or subscribe to access the full article. Already a subscriber or purchased this issue? Sign In Buy Digital Issue $7.99 Add To Cart Print + DigitalAll Access $99.99 Subscribe ADVERTISEMENT Scientific American is a trademark of Scientific American, Inc., used with permission © 2015 Scientific American, a Division of Nature America, Inc. All Rights Reserved.