Evaluate India's interplanetary missions and their contribution to global planetary science.

India's deep-space programme — the Mars Orbiter Mission (MOM), the Chandrayaan series and Aditya-L1 — must be judged on two distinct counts: the technological capability demonstrated and the scientific knowledge added. On this test, India's capability record clearly outruns its science output.

Merits: frugal engineering and proven capability

• MOM was inserted into Mars orbit on 24 September 2014 after launch on PSLV-C25 [2], making India the first Asian nation in Mars orbit and the only country to succeed on a maiden attempt — the fourth agency at Mars after the Soviet Union, NASA and ESA [3].
• The entire mission — launch vehicle, spacecraft and ground segment — cost about ₹450 crore; PIB terms it the world's most economical interplanetary mission, paving the way for cost-effective access to deep space [1].
• Designed for six months, MOM completed seven years in Mars orbit [1], evidence of conservative, sound engineering.
• Aditya-L1's halo-orbit insertion at L1 (January 2024) proved precise long-distance navigation and control, directly transferable to future interplanetary missions [5].

Contribution to global planetary science

• Chandrayaan-1 confirmed the presence of water molecules/hydroxyl on the Moon, reshaping global lunar science and the case for polar exploration [4].
• MOM's five payloads — MCC, TIS, MSM, MENCA and LAP — returned full-disc images of Mars and its moons Phobos and Deimos, with data opened to researchers through ISRO's Announcement of Opportunity [2].

Limitations

• MOM was a technology demonstrator: a six-month design life and five light instruments [1][2] limited its science return against MAVEN or ExoMars.
• Arriving fourth is a capability milestone, not a discovery; India has no lander, rover or sample-return capability beyond the Moon.
• Missions remain episodic, with Mangalyaan-2 still awaited and few international payload partnerships.

Verdict: India has contributed more to democratising deep space than to frontier discovery — yet Chandrayaan-1 shows the two can converge. A sustained mission cadence, heavier science payloads, open data sharing and IN-SPACe-enabled academic–industry participation can convert one-off triumphs into a continuous planetary science programme, advancing both national capability and humanity's shared knowledge of the solar system.