Life goes on with the availability of oxygen, water and other useful components. Our home planet, Earth has all the qualities so we live here so comfortably. It is bases on one's belief that life exists on other planets or does not. Some believes that aliens do exist on other planets while others do not. Our scientific organisations like ISRO and different researchers are finding factors for lives on other planets. It is believed that the planet Mars have some factors for a better life. Yes, it is declared that life on Mars is possible.