India's Mars Orbiter Mission, known as MOM, has ended after eight years – even though it was designed for a six-month lifespan, the Indian Space Research Organization announced this week.It was an enormous feat to have reached Mars' orbit successfully in the first attempt, Dr. K. Radhakrishnan, a member of India's space commission, said during an address Monday.India developed MOM for about $75 million – a bargain compared with NASA's $671 million Mars Atmosphere and Volatile Evolution mission, or Maven, which was launched around the same time.There has been high demand for MOM's data globally, Indian Space Research Organization said, adding that 7,200 users have registered to download the data, 400 of which are international users from 50 countries.The orbiter also observed a dust storm, which gave scientists an understanding of the dust on the planet."