NASA History

Joe Engle—age 32—flew the X-15 OTD in 1965 to an altitude of more than 50 miles, qualifying for astronaut wings under the USAF definition.

He was selected to become a NASA astronaut the following year and was the only person to have flown both the X-15 and the Space Shuttle.

Two close-up views of Ganymede, the largest moon in our solar system, taken 25 years apart!

30 years ago on June 27, NASA's Galileo spacecraft performed humanity's first-ever flyby of Jupiter's icy moon Ganymede—revealing that it had a magnetic field. Galileo flew within 519 miles (835 km) of Ganymede.

Nearly 25 years later, in June 2021, Juno made the next closest approach to the surface of this fascinating moon reaching a distance of 645 miles (1,038 km), detecting salts and organic compounds in its icy crust.

⬇️ Galileo's view, June 1996 ↘️ Juno's view, June 2021