Aditya-L1 spacecraft is designed to provide remote observations of the solar corona and in-situ observations of the solar wind at L1 (Sun-Earth Lagrange point), which is about 1.5 million kilometres from the Earth
A combo of two photos shows a crater (left) that the Chandrayaan-3 Rover Pragyan encountered on August 27, and the path (right) retraced by it on the lunar surface. Pic/PTI
After the successful Chandrayaan-3 mission to the Moon, ISRO on Monday announced that India’s first solar mission Aditya-L1 to study the Sun will be launched on September 2 at 11.50 am from Sriharikota spaceport.
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Aditya-L1 spacecraft is designed to provide remote observations of the solar corona and in-situ observations of the solar wind at L1 (Sun-Earth Lagrange point), which is about 1.5 million kilometres from the Earth.
Lagrange Points are positions in space where the gravitational forces of the Sun and the Earth produce enhanced regions of attraction and repulsion. These can be used by spacecraft to reduce fuel consumption needed to remain in position, according to NASA. Lagrange points are named in honour of Italian-French mathematician Josephy-Louis Lagrange.
The Bengaluru-headquartered space agency said in a social media post that the spacecraft - the first space-based Indian observatory to study the Sun - would be launched using a PSLV-C57 rocket.
The Aditya-L1 mission, aimed at studying the Sun from an orbit around the L1, will carry seven payloads to observe the photosphere, chromosphere and the corona — the outermost layers of the Sun — in different wavebands. Aditya-L1 is a fully indigenous effort with the participation of national institutions, an ISRO official said.
The Bengaluru-based Indian Institute of Astrophysics (IIA) is the lead institute for the development of Visible Emission Line Coronagraph (VELC) payload while Inter-University Centre for Astronomy and Astrophysics, Pune, has developed the Solar Ultraviolet Imaging Telescope (SUIT) payload for the mission. According to ISRO, VELC aims to collect the data for solving how the temperature of the corona can reach about a million degrees while the Sun’s surface itself stays just over 6,000 degrees Centigrade.
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