From drone flight to sounding rocket
Image: ESA
Machine-written summary, checked against the sources below
A drone flew above ESTEC, the European Space Agency's technical center in the Netherlands, carrying a student-developed radar retroreflector payload. The flight served as the first test of the technology.
A drone carrying an unusual payload recently took to the skies above ESTEC, the European Space Agency’s technical centre in the Netherlands, marking the first test flight of a student-developed radar retroreflector technology.
Summary by ESA, the primary source