Here is a Summary of Two Interesting Articles related to Earth. The second one is important for our future.
Article 1: Scientists Say Huge Structures Inside Earth Are Related to the Origin of Life
Huge Structures Inside Earth
Scientists have identified two continent-sized dense rock structures at the boundary of Earth’s mantle and core, located beneath Africa and the Pacific Ocean.
These formations, called large-low shear velocity provinces (LLSVPs) and ultra-low velocity zones, disrupt seismic waves and suggest unusual composition.
New Theory
A team led by Yoshinori Miyazaki (Rutgers University) proposes that these structures formed from silicon and magnesium leaking from Earth’s core billions of years ago.
This leakage may have “contaminated” a basal magma ocean, preventing uniform solidification and creating the lumpy mantle composition.
Implications for Earth’s Evolution
This process could have helped Earth cool sufficiently, triggering volcanic activity and shaping the atmosphere.
It may explain why Earth developed a stable, habitable environment, while Venus and Mars became inhospitable.
Scientific Significance
These structures are described as “fingerprints of Earth’s earliest history.”
Understanding them could provide insight into planetary formation and why Earth is uniquely suited for life.
Article 2: This Strange Anomaly is Expanding, And NASA is Tracking It Over the South Atlantic
What the South Atlantic Anomaly (SAA) Is
The South Atlantic Anomaly (SAA) is a weak spot in Earth’s magnetic field, located between South America and southwest Africa.
It appears as a “dent” in the magnetic shield, allowing more high-energy solar particles to reach satellites.
Expansion and Division
The anomaly has been expanding steadily since its discovery, growing by nearly half the size of continental Europe since 2014.
In 2020, scientists observed that the anomaly is splitting into two distinct regions, with different behaviors near Africa and South America.
Risks to Satellites
Satellites passing through the SAA are vulnerable to glitches or malfunctions caused by solar particles.
Operators often shut down sensitive systems temporarily to prevent data loss or damage.
NASA has already observed real-time disruptions linked to the anomaly.
Possible Causes
The anomaly may be influenced by a massive dense rock structure beneath Africa called the African Large Low Shear Velocity Province.
This disrupts the magnetic field generated by Earth’s molten iron core.
NASA geophysicists note that a localized reversed polarity field is growing in the region, weakening the overall magnetic strength.
Scientific Importance
The SAA provides clues about how Earth’s magnetic field evolves.
Ongoing monitoring is crucial for protecting space missions and understanding planetary dynamics.
Growing South Atlantic Anomaly Threatening Satellites and Spacecraft. | WION Podcast
Something Weird Is Happening In Earth's Magnetic Field & NASA is Worried
