On Earth, the majority of telescopes are fixed and confined to a single spot, frequently on a mountain peak or in a desert.
The Stratospheric Observatory for Infrared Astronomy (SOFIA) of NASA, however, is not like other telescopes.
SOFIA is a flying observatory that NASA and the German space agency (DLR) collaborated on.
It is a Boeing 747SP aeroplane with a significant hole in it that allows a 106-inch (2.7-meter) telescope to observe the universe in infrared light.
10 hours of SOFIA flights at a height of 38,000 to 45,000 feet (about 11,500 to 13,700 metres)
Infrared light is blocked by Earth's atmosphere, therefore far less of the atmosphere had to be seen through its instruments.
After starting its normal operations in 2014, SOFIA has been travelling the world's night skies while observing the universe,