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Countdown begins for launch of India’s solar mission Aditya-L1 at Sriharikota in Andhra Pradesh


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The countdown for the Saturday morning launch of India’s mission Aditya to the sun has begun. PSLV C-57 will begin it’s mission tomorrow noon from Sriharikota space station in Andhra Pradesh.

The satellite will be placed in a halo orbit around the Lagrange point L1 of the Sun-Earth system, which is about 1.5 million kms from the Earth.  It will take around four months to reach the Lagrange point. The advantage of halo orbit around the L1 point is that the satellite can observe the solar activities without any obstruction by other celestial activities like eclipse. The Aditya L1 mission is to study the solar winds and Sun’s atmosphere.  It will carry seven payloads to observe the photosphere, chromosphere and the outermost layers of the Sun namely corona. This will help understand the problems of coronal heating, Coronal mass ejection, pre-flare and flare activities, dynamics of weather, study of propagation of particles and fields in the interplanetary medium. ISRO has invited the citizens to witness the launch of PSLC-C57 launch from the viewing gallery at Sriharikota by registering at lvg.shar.gov.in/VSCREGISTRATION website.

This mission will be the first of its kind to study and research the Sun’s atmosphere, its environment, and everything related to it. The 1,500 kg spacecraft will carry seven payloads to study different parts of the Sun’s atmosphere. These devices will study different parts of the Sun, including its outer layer the corona, four look directly at the Sun from a special position called L1, while the other three study particles and fields at the same point. These studies help us learn about how solar activity affects the space between planets. The Aditya L1 payloads’ are expected to provide crucial information about various aspects of the Sun, like coronal heating, coronal mass ejections, pre-flare and flare activities, space weather dynamics, and the movement of particles and fields,”

ASTRO Physicist Prof B Ravindra from Indian Institute of Astrophysics in Bengaluru says that India will be the third country in the world to send it’s spacecraft to L1 point to study Solar corona, it’s flares and corona mass ejection. Speaking exclusively to AIR news he informs that the data derived from seven payloads of Aditya L1 will throw light on aspects that remains concealed till now.

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