India’s Mangalyaan Mars Orbiter Mission has ended.
The nation’s Space Research Organisation (ISRO) yesterday published an outline of the proceedings of a September 27th meeting at which the state of the mission was discussed.
The news was not good: communication with the orbiter was lost in April 2022, and ISRO staff believe it has run out of propellant and cannot therefore align its solar panels to recharge sufficiently recharge its batteries and resume operations.
“It was declared that the spacecraft is non-recoverable, and attained its end-of-,” the document states.
Mangalyaan was modestly equipped with five instruments – a color camera, the Lyman Alpha Photometer used to measure the composition of Mars’ upper atmosphere, a thermal imaging spectrometer, another named the “Mars Exospheric Neutral Composition Analyzer”, and a methane sensor.
Those instruments nonetheless produced plenty of data. ISRO listed the following achievements of the mission:
- Captured the first photos of the far side of Mars’ moon Deimos;
- Enhanced our understanding of the composition of several gases in the Martian exosphere;
- Quantified the altitude where the Martian atmosphere transitions from a CO2-rich regime to atomic Oxygen-rich regime during the local evening;
- Discovering “suprathermal” Argon-40 atoms in the Martian exosphere, hinting at why the red planet lost most of its atmosphere;
- Observed many Martian dust storms and advanced our understanding of their workings;
- Helped to generated an atlas of Mars;
- Recorded variations in Mars’ ice caps;
- Used its elliptical orbit to capture full-disk images of Mars like the one below.
Mangalyaan reached the launchpad after expenditure of just $74 million, considerably less than the cost of comparable missions launched by other nations. The craft therefore became a symbol of Indian ingenuity and innovation, and a subject of great national pride even if it was often pointed out that India’s pervasive poverty means the nation’s interplanetary space program may be an indulgence.
In 2019 ISRO tried and failed to land the Chandrayaan-2 probe on the Moon. The Organisation plans a crewed launch in 2024, along with missions to send probes to Venus and Mars. ®