30
Aug
Chennai: The 29-hour countdown for the launch of India's eighth navigation satellite IRNSS-1H began at 2 p.m. on Wednesday at the Sriharikota rocket port, around 80 km from here, officials said. The 1,425-kg satellite -- part of Indian Regional Navigation Satellite System (IRNSS) -- will be carried by Polar Satellite Launch Vehicle (PSLV) rocket XL variant that will blast off on Thursday evening at around 7 p.m., said an official of the Indian Space Research Organisation. This will be the eighth IRNSS satellite and will be a replacement for IRNSS-1A as its rubidium atomic clocks have failed. The atomic clocks are…