As it circled the Earth one night in 2017, the Chinese satellite Mozi, also called Micius, aimed a laser at a ground station in northeastern China (Fig. 1). The
Reciprocating engines and their fuels are largely associated with road transport. This isn’t surprising. About 70% of transport-sector greenhouse gas emissions
March 2019 saw the culmination of the RemoveDEBRIS satellite mission,which demonstrated a set of technologies that could one day help address the problem of spa