article_snippet.sent: This will be achieved with a demonstration of their new prototype, the VX-200-SS, which will be able to fire continuously for more than 100 hours.
article_snippet.sent: A previous test in 2013 saw Ad Astra’s complete 10,000 successful high power firings of a Vasimr prototype.
article_snippet.sent: Proving the engine works for more than 100 hours will be key to the engine one day being used on a spacecraft.
article_snippet.sent: the engine is seen here being tested. 
highlights_snippet.sent: Company in Texas has been asked to develop Company in Texas revolutionary engine .
  