ISRO to launch first solar mission Aditya-L1 to study Sun

The Indian Space Research Organisation (ISRO) is preparing for its first scientific expedition to study the Sun, Aditya-L1.

ISRO is planning to launch by the end of August or early September this year.  

As of now, the satellite realised at the UR Rao Satellite Centre (URSC), Bengaluru has reached the SDSC-SHAR / spaceport in Sriharikota, Andhra Pradesh. 

The spacecraft shall be placed in a halo orbit around the Lagrange point 1 (L1) of the Sun-Earth system, which is about 1.5 million km from the Earth.

Notably, a satellite placed in the halo orbit around the L1 point has the major advantage of continuously viewing the Sun without any occultation/eclipses.

And, this will provide a greater advantage of observing the solar activities and its effect on space weather in real time.

Noteworthy, the spacecraft carries seven payloads to observe the photosphere, chromosphere and the outermost layers of the Sun (the corona) using electromagnetic and particle and magnetic field detectors.

Using the special vantage point L1, four payloads directly view the Sun and the remaining three payloads carry out in-situ studies of particles and fields at the Lagrange point L1.

Thus, providing important scientific studies of the propagatory effect of solar dynamics in the interplanetary medium

The suits of Aditya-L1 payloads are expected to provide most crucial informations to understand the problem of coronal heating, coronal mass ejection, pre-flare and flare activities and their characteristics, dynamics of space weather, propagation of particle and fields etc.