Should I get my 8th grade son enrolled in NASA or ISRO?

Ans: Hi Kapil.
Glad to hear about your son's interest in space and astronomy at an early age.
1) Provide him with good foundation books published by various publishers like MTG, Dinesh, Matrushri (Hyderabad) etc.
2) Ask him to appear for all types of olympiad examinations conducted at the school level.
3) Ask him to appear for Dr Homi Bhabha's 9th/10th standard examination.
4) Try to complete CBSE + ICSE + State board syllabus at each standard i.e. 8th, 9th and 10th
5) Visit the NASA and ISRO websites to learn more details, i.e., the process of joining them.
At last, keep a close eye on his performance at each state/examination. Always take proper and honest feedback from his teachers. Try to have his meeting with rankers.
In summer vacation, try to visit places like Nehru Planetarium (Mumbai), and Jantar-Mantar's located at Jaipur, Delhi, Varanasi, Ujjain, and Mathura which will open his eyes more. These places are well known from Astronomy point of view.

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Radheshyam