Made to last 6 months, Mangalyaan completes 4 years around Mars
The cheapest Mars mission in history, India's Mangalyaan, has successfully completed four years around Mars, despite being designed to last only six months. ISRO inserted Mangalyaan into Mars' orbit in its first attempt on September 24, 2014, using the least amount of fuel possible. The spacecraft was launched utilising a unique Earth-Mars arrangement that occurs once in 780 days.