Scientists found a shocking discovery. As we all know that the existence of the magnetic field around our planet is vital for life as it helps to shield us from cosmic radiations.
Swarm satellites are created to identify and precisely measure the different magnetic signals that make up Earth's magnetic field.
Thankfully, the ESA's Swarm mission, which has been mapping the details of the Earth's magnetic field, may give us some clues.
While this is not going to affect or alarm the general public to a huge extent, it is causing technical difficulties for various satellites and spacecrafts, as the magnetic field getting weaker, charged particles from the cosmos can penetrate through to the altitudes that low-Earth orbiting satellites fly at. In just five years, it has formed a minimum intensity core.
Scientists suspect that the weakening is a warning that the Earth is moving for a polar reversal. This is when the north and south poles swap positions, and that was the last time it occurred 780,000 years ago.
Scientists are using data from the European Space Agency's Swarm constellation to improve our understanding of this area, which is known as the 'South Atlantic Anomaly'. "The challenge now is to understand the processes in Earth's core driving these changes". Over the past two centuries the Earth has lost about 9% of the magnetic field. The most critical losses in the area from Africa to South America. Well, the geographic North Pole stays fixed over time (mostly because we define it to stay fixed over time) but the magnetic north pole constantly moves.
In comparison, Ciaran Beggan of the British Geological Survey told MailOnline the southern magnetic pole has scarcely changed much over the past 100 years.
Data were obtained through the ESA Swarm satellites.
What's more surprising, however, is that the phenomenon has developed and pushed westward at a speed of about 12 miles per hour. Researchers believe that this could mean that the anomaly can split into two separate cells.
And when this happens, multiple magnetic poles from north and south are popping up around the Earth.
If the poles are in the process of reversing, Daily Mail notes that this will be happening over thousands of years, according to experts who say that it's unlikely the field to completely disappear.
"We are very lucky to have the Swarm satellites in orbit to investigate the development of the South Atlantic Anomaly", Matzka said.