This specific paper addresses the historical events that had led in the current scenario, to the development of one of the most important fundamental research areas – Geomagnetism, which might even date back to probably millions of years embedded in the core scientific aspects of even ancient civilizations. On the other hand, the energetic charged particle flux namely the solar wind and its associated magnetic field have their source in the Sun and their interaction with the geomagnetic field which extends into outer space has its origin inside the earth’s core. Needless to say, the contributions of many scientific researchers on the dynamics of upper, middle and lower atmospheres of the earth is indeed remarkable, but certain important aspects require more attention. Hence, the Sun-Earth Connectivity is of utmost importance to Space-weather researchers. Moreover, the Sun-earth connectivity through the geomagnetic storm is a process which is still less understood. Space-weather researchers face huge challenges as the geomagnetic storms turn out to be more dangerous and disastrous at times and hence, the consequences are seen clearly on the ground level and on the space based technological systems. A gradual understanding of the root level causes can lead to solutions with possibly good accuracies which in turn can be helpful in sorting out the various space based and ground based technological anamolies and challenges. The Real-Time Disturbance Storm time index measured for the month of january 2018 is shown below. The decrease in the earth’s magnetic field is clearly shown.
