Google often comes up with doodles to mark anniversaries,  annual events or birthdays but this gesture of the search giant is a rare one. This unique doodle is visible only in India.

It was on September 24 that the Mars Orbit Spacecraft, which we proudly claim is a comparatively cheap project, successfully entered the orbit of the red planet.

With Mangalyaan's launch, the Indian Space Research Organisation (ISRO) became the fourth international space agency after National Aeronautics and Space Administration (NASA) of US, Russian Federal Space Agency (RFSA) and European Space Agency to undertake a mission to Mars.

It was also one of the cheapest Mars missions to have been undertaken so far as it cost only USD 74 million.

Mangalyaan has five instruments aboard: a camera, two spectrometers, a radiometer and a photometer.

It aims to understand the process by which water was lost on Mars, measure methane levels in the Martian atmosphere, map the surface, composition and mineralogy of Mars and take images of the Martian surface.