ISRO is all set to launch its first solar mission called Aditya L1 in 2019. The mission will put Aditya L1 satellite into halo orbit around Lagrangian point L1.

• The mission will study dynamic nature of sun’s outer most layers, the corona and the chromosphere and collect data about Coronal Mass Ejections.
• The mission will also study solar storms and will focus on collection of information for space weather prediction.

Lagrangian Points: Lagrangian Point or Lagrange point is a position in space where combined gravitational forces of two large bodies – Earth and Sun or Earth and Moon equal centrifugal force felt by a much smaller third body.

• It is named after Joseph-Louis Lagrage, 18th century mathematician. Between earth and sun there are 5 Lagrangian points namely – L1, L2, L3, L4 and L5.