![](https://www.nasa.gov/sites/default/files/thumbnails/image/16501277241_f0d41c0e14_o.jpg)
On June 21, 1975, NASA successfully launched the eighth Orbiting Solar Observatory aboard a Delta rocket from Cape Canaveral, Florida. This satellite was the final in a series of spacecraft specifically designed to look at the Sun in high-energy wavelength bands. via NASA https://ift.tt/2tseeyr