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First modern microsatellite with in-orbit re-programmable computers, UoSAT-1 (1981)

First modern digital store-and-forward communications payload, UoSAT-2 (1984)

First modular 50kg microsatellite design, now widely emulated, UoSAT-3 and UoSAT-4 (1990)

First satellites for the nations of South Korea (1992), Portugal (1993), Chile (1995), Algeria (2002

First microsatellite using GPS for on-board orbit determination, PoSAT (1993)

First recorded and verified unintentional space debris impact by two man-made objects in Earth orbit

First microsatellite to take multispectral Earth images, TMSat (1998)

First satellite to use Nitrous Oxide as a propellant, UoSAT-12 (1999)

First commercial organisation to launch on the Kosmotras DNEPR launch vehicle, UoSAT-12 (1999)

The first successful use of GPS on board a nanosatellite for orbit manoeuvring, SNAP-1 (2000)

First use of butane as a space propellant, SNAP-1 (2000)

First use of propulsion on a nanosatellite, SNAP-1 (2000)

First nanosatellite to demonstrate in-orbit inspection of another spacecraft and orbit autonomous at

UK’s first nanosatellite in orbit, SNAP-1 (2000)

First demonstration of autonomous orbit control, using on-board GPS and propulsion system to maintai

First satellite to have a web address in orbit, UoSAT-12 (2001)

First Knighthood for services to microsatellite engineering, Sir Martin Sweeting (2001)

First internationally co-ordinated disaster monitoring constellation, the Disaster Monitoring Conste

First satellite to take 32m resolution multispectral images at 600km swath width, AlSAT-1 (2002)

First demonstration of a water propulsion system, UK-DMC-1 (2003)

First use of Interplanetary Internet v6 on board a satellite in orbit, UK-DMC-1 (2003)

First small satellite to use a Control Moment Gyro, BILSAT-1 (2003)

First satellite image of New Orleans coastline, following Hurricane Katrina, NigeriaSat-1 image (200

First Galileo positioning satellite for Europe, GIOVE-A (2005)

First low-cost minisatellite constellation for commercial Earth Observation– RapidEye (2008)

First GPS position fix at 23,300km altitude, using GPS signals outside a GPS constellation – GPS exp

UK’s first cubesat in orbit, STRaND-1 (2013)

First momentum wheel to guide a lander to land on a comet’s surface, Rosetta/Philae mission (2014)

First use of reflected GPS signals to measure sea-state and generate Delay Doppler Maps on board the

First in-orbit demonstration of space debris capture, RemoveDEBRIS (2018)

First use of Hook-and-Loop Hold Down and Release Mechanism, CARBONITE-2 (2018)

First demonstration of 5G connectivity on a LEO spacecraft, LEO Vantage Phase 1, 2019