ISRO has planned that in the coming 2 years they are going to perform 36 launches for their missions, and now after chandrayaan 2 ISRO is aiming for sun name of this mission is Aditya L1 in which we are going to study the outermost layer of sun i.e Corona. Let me explain to you about this in detail, in beginning the name of this mission was Aditya1 in which it was going to carry only one payload i.e Visible Emission Light Chronograph in its 400kg satellite, which was going to be established in low earth orbit meaning at 800km from the earth. 

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But, Later ISRO’s scientists realized that if they put this satellite in lagrangian point then they would have a major advantage that they would be able to monitor sun continuously without any disturbance. Wait, maybe now you are wondering; what is this lagrange point. Well, the lagrangian point is a certain point in space between 2 bodies for example between the sun and the earth where because of gravitational forces of these two bodies an enhanced region gets created of attraction and repulsion.

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If we put any satellite at this point then with the help of very little fuel or even without using any fuel, it would be able to remain stable in its position. We can understand this in such a way that if we put any satellite then at this particular point the magnitude of the gravitational force of earth and sun will be equal and hence the satellite will remain at the point forever and that’s why mission’s name is changed from Aditya 1 to Aditya L1, but along with this many other advances have been made like extra payloads have been added but still, its primary payload is going to be coronagraph, which will study sun’s outer most layer Corona.

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This Corona can extend up to million kilometers from sun’s surface, which can be easily seen with the naked eye at the time of the solar eclipse. Moreover, it will also observe the photosphere and chromosphere of the sun and if we talk about its extra payloads then one of them will measure particle flux originating from sun while other is magnetometer which will observe the variations in magnetic field strength from sun. ISRO also said that these extra payloads will work only when they are put outside of interference of earth’s magnetic field and because of this reason, only these extra payloads were added after the decision of putting Aditya satellite at 1.5million kilometers away from us at lagrange point1.

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There is a big advantage in this that we will be able to observe sun all the time because this lagrange point is between sun and earth and due to the distance of this satellite from earth, it will be protected from other interference which will further result in taking precise readings. For now, ISRO has not released any official date for this mission but rumors are suggesting that it will commence in the 2nd half of the year 2020.