Earth to get most expensive watchdog Satellite #NISAR soon built by Space giants NASA and ISRO
 Source : News Bharati English  Date : 25-May-2017

New Delhi, May 25: Both giants NASA and ISRO set to build world’s most expensive satellite NISAR- which will monitor our Earth. NISAR – the NASA-ISRO Synthetic Aperture Radar satellite – is estimated to cost the two countries over 1.5 billion dollars and could possibly be the world’s most expensive Earth imaging satellite which is scheduled to be launched by 2021.

In a meeting in Toronto, NASA Administrator Charles Bolden and K.Radhakrishnan, Chairman ISRO, signed two documents to launch the NASA-ISRO satellite mission. The purpose of the mission is to observe Earth and establish a pathway for future joint missions for Mars exploration, according to the NASA website.

In a meeting in Toronto, NASA Administrator Charles Bolden and ISRO Chairman K.Radhakrishnan, signed two documents to launch the NASA-ISRO satellite mission. One of the main purpose of the mission is to observe Earth and establish a general pathway for future joint missions for Mars exploration.

According to the team, it will this is two frequency RADAR, it is an L-band 24 centimetre RADAR and S-band 13 centimetre. S-band is being built by ISRO while NASA is taking the responsibility for the L-band by NASA.  The NISAR satellite, scheduled to be launched from India, four years from now, using the Geo-Synchronous Satellite Launch Vehicle (GSLV) also promises to further strengthen Indo-US ties.

What will the NISAR satellite do?

The satellite will take weekly snapshots of earth, using the two radars that will provide time lapse images of the motion of tectonic plates, ice sheets and changes in vegetation over land in agriculture and forests.

Paul A Rosen, a scientist working on the NISAR satellite project said, “What we are doing is looking at time variability of the Earth over the life of the mission to understand how disasters evolve, how earthquakes occur, how volcanoes occur, how the ice sheets are changing and affecting sea level rise, and how forest fires and changes in the forest cover affect the atmosphere.It is very relevant to what society cares about which is changes in our climate, changes in our environment and how it affects society,” he added.