This special issue of IJSC is devoted to the latest advances in intersatellite links (ISLs). All aspects of ISLs are covered, from general principles to specific details of design. Offers a fascinating, in-depth look at ISL technology, and covers new applications and developments in microwave, especially optical technology. Particular attention is given to solid-state lasers that allow efficient generation of optical wavelengths. Also covered are tracking, communications, testing, and interfacing.