Hi there,

For PG diploma in Space science the eligibility criteria is to have a Post Graduation in Science with Graduation in Physics/Electronics as main OR B.E/B.Tech. So to answer your question, you can apply for PG Diploma in space science only after you complete your post graduation with physics as main subject, for more details about the diploma please refer the link herein, http://www.gujaratuniversity.org.in/web/NWD/Departments/TeachDep/SSciences/DPhysics.pdf