Indian Space Research Organisation will launch four more foreign earth observation satellites on its light-lift PSLV rocket towards the end of 2014 and end-2015, according to an official announcement.
Three spacecraft are from the UK and one from Singapore, a release said.
ISRO has launched 35 small foreign satellites into space and has seven more lined up through 2016-17 along with its own primary spacecraft.
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On Wednesday, ISRO's commercial wing Antrix Corporation signed the latest launch service contract with Singapore's ST Electronics (Satcom & Sensor Systems) Pte Ltd. ISRO will launch the latter's 400-kg TeLEOS-1 earth observation spacecraft.
On January 29, Antrix signed agreements with DMC International Imaging, a group firm of UK-based Surrey Satellite Technology Ltd, to launch three 350-kg DMC-3 disaster monitoring satellites.