Thaindian News

July 18, 2010 (Pen Men at Work): A fresh investigation has indicated that Mercury is wracked by powerful magnetic disturbances that are more severe than any on Earth.

A number of fresh investigations have been conducted founded on interpretations during the most recent flyby of the diminutive and rock-strewn planet by a NASA spaceship, MESSENGER. These investigations have mentioned that Mercury also underwent volcanic movement for a lengthier duration than once believed.

These latest conclusions originate from the information assembled by MESSENGER. MESSENGER discovered even more secrets about the most contiguous planet to the sun. This was during its third and final flyby of Mercury in September 2009. This investigation, to begin with, found out Mercury’s magnetic turf, which is labeled as magnetosphere. This turf, in fact, discharges energy in violent magnetic commotions. These are referred to as substorms. These storms happen to be far more intense than analogous ones witnessed on Earth. These storms consists of spikes in the extent and force here of multicolored auroras and the remotest Van Allen radiation belt.

NASA initiated MESSENGER six years back. It went like a bullet within 142 miles of its Mercury’s exterior during its latest flyby. The spacecraft has been designed to course around the planet in 2011. It has already given in a trove of facts and has resolved ambiguities such as whether it had volcanoes.

The scientists disclosed their latest conclusions in three documents that came into view online on July 15 in the journal, ‘Science’.

In one investigation, the investigators examined MESSENGER’s notes of the Mercury’s magnetosphere as the planet had to endure the bombardment by the solar wind. The investigators discovered that, in the magnetosphere’s tail, the magnetic turf could get higher and decrease in force by a factor of two to 3.5 in merely two to three minutes.

Scientists also uncovered that the exceedingly shaky ambiance of Mercury comprised elements such as magnesium, calcium, and sodium. This feeble ambiance is seemingly generated and preserved by a number of dissimilar procedures such as the forces produced by the planet’s magnetic turf. These findings assist to inform us about the constitution of the Mercury’s exterior and how the substance is moved over the planet.

Louise Prockter happens to be a planetary scientist at the Johns Hopkins University. She has asserted that these findings transform numerous predetermined conceptions of ours about the evolution of Mercury.