2017: A year of groundbreaking discoveries and record-setting exploration at NASA. The Moon became a focal point for the agency, we brought you unique coverage of the first coast-to-coast total solar eclipse in the U.S. in 99 years, we announced the most Earth-size planets ever found in the habitable zone of a star outside our solar system, and more! | NASA - National Aeronautics and Space Administration

In 1965, NASA astronaut Ed White conducted the first American spacewalk during Gemini 4, demonstrating that astronauts could maneuver and work in open space, a milestone that enabled future missions involving spacecraft repair, station assembly, and long-duration human presence in orbit. Follow @spaceeves #spacenews #nasa #spacehistory #gemini | SpaceEve

What happened This Week @NASA? Spacewalks, Earth Science mission updates, Commercial Crew groundbreaking & more Watch: http://youtu.be/zczwVH4jcDQ | NASA - National Aeronautics and Space Administration