The Space Launch System and Orion won't fly until 2019, and NASA is sticking with its original plan not to include astronauts for the maiden mission. Here is a timeline of some of the programs' major twists and turns over the years.
The Planetary Society's LightSail project has roots in a late-1970s NASA plan to send a giant solar sail spacecraft to Halley's Comet. Now, a cache of archival documents adds new depth to the audacious plan.
I believe Expedition 50 had a fun and good ISS crew. I base this declaration solely on the moments they shared on social media. This logic is completely bulletproof and there's no point trying to prove otherwise.