A Brief History of SAR Systems
SIR-C/X-SAR: Joint venture of NASA, the German Space Agency (DARA) and the Italian Space Agency (ASI).
Flown on two shuttle missions, STS-59 (April 1994) and STS-68 (October 1994)
107 terabits of terrain data, corresponding to 149 million square kilometers (58 million square miles) of coverage (about 14% of the Earth's surface).