According to a latest report, the Polar Satellite Launch Vehicle (PSLV) is scheduled to lift off on the 5th of November this year. And if it happens, the event will be adored by many anxious people's eyes.

This is a very difficult mission and the fickle weather may add to more complexities in the same. The ISRO chairman K Radhakrishnan is not prone to any short of fits of worry and says that the PSLV is the best and most useful vehicle in its class. Also, because of this reason many countries are using it now to launch their satellites.

Chairman K Radhakrishnan also says that a mission to Mars will necessitate taking into account the power and influence of the earth, the moon, the sun and of course, the destination planet, all of which keep altering positions with the day of the launch.

The astronomers also warn that the smallest error can result into the biggest disaster and also the calculations should be carried out with full accuracy.

Radhakrishnan says the spacecraft's entrance point on Mars has to be calculated to an accuracy of 60 miles, that too about 280 days in advance.

He also said, "It takes beyond textbook mechanics to achieve this precision. An excursion to the red planet does not come easy to even to the most experienced".