NASA Gulfstream Jets fly over downtown Houston

NASA’s Gulfstream III and Gulfstream V fly over downtown Houston on Aug. 28, 2018. The two planes have been modified to support a variety of human spaceflight and scientific missions, including activities such as the astronaut direct return mission as mapping lava flows from active volcanoes and measuring the levels of ice melting at the Earth’s poles. The photo was taken from one of NASA’s T-38. Credit NASA/James Blair