What is Lagrange Point 1 where the spacecraft will be stationed?

The Lagrange Point 1 (L1) will be a unique point from where ISRO’s Aditya L1 can observe the Sun continuously without encountering any interruptions like occultations or eclipses.

Aniruddha Chakraborty
New Update


BY A STAFF REPORTER: The Lagrange Point 1 (L1) is an equilibrium point in space, discovered by the renowned mathematician Joseph Louis Lagrange. Positioned around 1.5 million kilometres within Earth's orbit, L1 is nestled between the Sun and Earth, where gravitational forces from both celestial bodies cancel each other out. This position offers spacecraft a stable environment to observe celestial phenomena with minimal energy expenditure.

According to NASA, Lagrange Points are the positions in space where objects sent there tend to stay put. These points in space can be used by spacecraft to reduce fuel consumption needed to remain in position. The choice of L1 for the Aditya L1 mission serves as a strategic advantage. This location provides an unobstructed and continuous view of the Sun, making it an optimal observatory for studying solar activities in real time. This uninterrupted perspective is pivotal in comprehending the intricate dynamics of solar flares and colossal outbursts of scorching solar plasma, known as coronal mass ejections.

The Aditya L1 mission is equipped with seven science payloads tailored to analyse the photosphere, chromosphere and outermost layers of the Sun.