The Hubble Space Telescope brings us more evidence for water vapor plumes on Europa;
Cassini takes a historic dive through the narrow gap between the planet Saturn and its rings, returning images for its closest look at Saturn's atmosphere;
NASA's Kennedy Space Center shared a few videos explaining all about CubeSats;
NASA profiles Anna Fisher, who retired from NASA after a career that stretched from the beginnings of the space shuttle program through International Space Station and into the design of the Orion spacecraft; and
NASA's OSIRS-REx searches for Earth's elusive Trojan asteroids when the spacecraft passes by Earth's L4 Lagrange point, en route to asteroid Bennu in 2018.
"Mapping the Heavens," a CfA Observatory Night talk, given by Priyamvada Natarajan, Yale University.