article_snippet.sent: Chief executive George Whitesides Chief executive George Whitesides has said new spacecraft is nearly ready.
article_snippet.sent: Chief executive George Whitesides said new spacecraft could begin test flights by the end of this yearthis year.
highlights_snippet.sent: Chief executive George Whitesides says new spacecraft is nearly ready .
  
highlights_snippet.sent: Chief executive George Whitesides said new spacecraft could begin test flights by the end of this year .
  