This Week @NASA: Acting Administrator Robert Lightfoot discussed our fiscal year 2018 budget. Also, Peggy Whitson and Jack Fisher conducted an unscheduled spacewalk outside the Space Station, we tested the RS-25 engines for our Space Launch System rocket, data from our Kepler mission help confirm the orbit of an exoplanet and more! Watch: http://go.nasa.gov/2rZoqNm[fb_vid id=”10155232890091772″]