India's spacecraft cost $75 million which was paid off from the success. They built MOM with their own homegrown technology. About three more spacecrafts are studying Mars' surface and other things that are unknown and probably will reveal soon.
For at least six months MOM will orbit Mars to collect enough data to bring back with its 5 solar-powered instrument. One about Mars' weather pattern and another one identifying if water really existed on Mars. Scientists wants to know if the red planet can provide life or if it use to.
We need to care about it because it will be Mars' history. Accomplishing this is such a big news, if all this goes well this day will remain in our lives.