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India launches NASA-ISRO Satellite to Track Climate Threats from Space

India launched a radar imaging satellite worth $1.5 billion on Wednesday, the first of its kind. It was built in collaboration between NASA and India to improve global monitoring of natural disasters and climate change.

NISAR, the NASA-ISRO Synthetic Aperture Radar satellite, is the result of the first collaboration between NASA and the Indian Space Research Organisation.

The rocket took off at 1210 GMT from India's Satish Dhawan Space Centre atop a medium lift rocket. This marks a landmark in space cooperation, and enhances India's image in low-cost missions with high impact.

NISAR, according to the space agencies, is the first radar imaging satellite in the world to use two different radar frequencies, the L-band from NASA and the S band developed by ISRO, to track minute movements on the Earth's surface. These changes can be as small as centimetres.

Satellite, about the size and weight as a full-loaded pickup truck was placed in a Sun-synchronous near-polar orbit 747 km above Earth.

The satellite will map the Earth every 12 days, using a 240km wide radar swath. This data is available to disaster response agencies and scientists to monitor anything from glacier retreats in the Himalayas up to possible landslide areas in South America.

After the launch, ISRO Chairman V. Narayanan stated that "the potential applications of the satellite are enormous and the scientific community around the world is eagerly anticipating the satellite data to use for their research and purposes."

It will not be used by just one or two nations. This great achievement will benefit the entire world," he said. He added that the mission brought the two space agencies closer together than ever before.

Casey Swails (NASA's associate deputy administrator) called the mission "a pathfinder". She said, "This Earth Science mission is unique and shows the world just what our two countries can do."

NISAR will operate for at minimum five years. Data collected by NISAR will be freely accessible to all users around the world. This is a step that aims to increase transparency and accessibility for environmental research and hazards response.

The launch coincides with India's wider push to establish itself a space power following its Chandrayaan-3 lunar landing and its Gaganyaan programme for human spaceflight.

India said that it plans to build its space station and send astronauts on the moon by 2035 in partnership with other nations as part of an overall vision to expand scientific and commercial activities in space. (Reporting and editing by Nivedita Battacharjee, YP Rajesh, and Ros Russell).

(source: Reuters)