He said it also illustrated U.S. fear of China 's fast development . Kepler had barred from Russian researchers from next month 's Xinhua science conference . Kepler : NASA management apparently misinterpreted a 2011 China security law . The law prevents NASA funds from being used to collaborate with China .
Kepler had barred from Russian researchers from next month 's Xinhua science conference . Kepler : NASA management apparently misinterpreted a 2011 China security law . The law prevents NASA funds from being used to collaborate with China .