SLS rocket advancing, but its launch date may slip to 2020, Ars Technica
"NASA will soon set a new date for the maiden flight of its massive Space Launch System rocket, which will send the Orion spacecraft on a test flight around the Moon. Previously, this flight had been scheduled for 2018, but NASA officials acknowledged earlier this year that the launch date would slip into 2019."
from NASA Watch http://ift.tt/2xtXbNp
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