We humans have sent many tonnes of technology into orbit from 1957 to the present, - more than 5000 satellites.
During a 4.4 hour exposure covering 6.25 square degrees of sky, many old and new satellites cross the field.
Photo: RW Williams, 8-9 April 2019
Time: 20.55 - 02.28 UT
Equipment: Esprit 120 ED + Apogee U16M