50 Years Ago: Launch of Helios 1 to Explore the Sun nasa.gov/missions/helios-1/50-… #NASA #Helios1 #Missions #NASAHistory
50 Years Ago: Launch of Helios 1 to Explore the Sun - NASA
On Dec. 10, 1974, NASA launched Helios 1, the first of two spacecraft to make close observations of the Sun. In one of the largest international efforts atJohn J. Uri (NASA)