article_snippet.sent: But Nasa has promised to keep Telescope on track for Nasa October 2018 launch. '
article_snippet.sent: the telescope is scheduled to launch atop an Ariane 5 rocket, made by the European Space Agency, from French Guiana in October 2018. '
article_snippet.sent: The heavy telescope, pictured here during testing, is scheduled to launch atop an Ariane 5 rocket, made by the European Space Agency, from French Guiana in October 2018 .
highlights_snippet.sent: Nasa is on track to launch Telescope in three years .
  