Celestia Technologies Group companies Celestia STS, Callisto Space and TTI attended 8th ESA International TT&C workshop held in ESOC in Darmstadt, Germany. Bryan Tatman (C-STS) shared his impressions "Workshop was extremely good. We had three quite intensive days of technical papers presentations. Very interesting combination of papers about TT&C for small satellites, big satellites and a lot of interesting papers about optical communication." After a week of networking and listening to technical presentations Bryan distilled the following key trends in TT&C: (1) Speed and data rates are increasing significantly and this brings new challenges for RF based technologies; (2) Optical communications upcoming complementary technology to RF