Page last updated at 14:21 GMT, Tuesday, 22 April 2008 15:21 UK One of Japan's most enduring national symbols, the cherry flower, is set to travel into space. The Japan Aerospace Exploration Agency (Jaxa) will send seeds to its soon-to-orbit science lab at the International Space Station (ISS). The experiment will observe how the seeds are affected by microgravity. Schoolchildren will pick about 2