Educational Launch of Nanosatellites (ELaNa) is an initiative created by NASA to attract and retain students in the science, technology, engineering and mathematics disciplines.
The ELaNa initiative has made partnerships with universities in the US to design and launch small research satellites called CubeSats (because of their cube shape).
[3][4] In 2015, NASA contracted two other companies for this purpose: Firefly Space Systems and Virgin Galactic.
[5] Nevertheless, NASA CubeSats will continue to hitch rides as secondary payloads in larger rockets whenever possible.
As of August 2017, NASA's ELaNa initiative has selected 151 CubeSat missions, 49 of which have been launched into space.