This means that the spacecraft is now no longer bound by Earth's gravity and is on its way to the Sun-Earth Lagrange Point 1 (L1).
The sphere of Earth's influence is the region of space where Earth's gravity is stronger than the gravity of any other body. The L1 point is a gravitationally stable point between the Sun and Earth, where the gravitational pull of both bodies is equal. This means that spacecraft can orbit L1 without using any fuel.
The Aditya L1 spacecraft is India's first solar mission. It is carrying seven scientific instruments to study the Sun's corona, chromosphere, and upper atmosphere. The spacecraft is expected to reach L1 in about 100 days, where it will begin its mission.