From NASA https://twitter.com/NASA on Twitter: Unwrapped a new device? Weve got lots of FREE eBooks and apps ready for you to download! Add some space to your life: eBooks: https://www.nasa.gov/connect/ebooks/index.html Apps: https://www.nasa.gov/connect/apps.html https://twitter.com/NASA/status/945373333914312704/photo/1 https://chirp.cooleysekula.net/attachment/46280