NASA insists its Mars rocket will still launch in 2019
 

NASA is aiming to launch its deep space-bound Space Launch System (SLS) in December 2019, even though a review has suggested it's not likely to fly until mid-2020. The launch date has already been pushed back once due to technical issues, but NASA is...

https://www.engadget.com/2017/11/09/...aunch-in-2019/