Summary:

- The article discusses India's ambitious Reusable Propulsive Stage for Atmospheric (RPSA) project, which is nearing project sanction.
- The RPSA project aims to develop a reusable rocket stage that can be used to launch satellites into orbit, reducing the cost of space missions.
- The project is being led by the Indian Space Research Organisation (ISRO) and is expected to be a significant step towards India's goal of developing reusable launch vehicles and reducing the cost of space access.