The US space agency “NASA” published a video clip of the Director of Planetary Sciences, Lori Glaze, in which she talked about Venus, or “Earth’s evil twin.”
It is the closest planet to Earth, and contains similar materials, but it also differs in several respects.
Venus suffers from unbridled global warming, due to a group of gases in its atmosphere.
The thickness of the planet’s atmosphere is 24 kilometers, and it consists of an overwhelming percentage of carbon dioxide and sulfuric acid.
The planet’s temperature reaches 480 degrees Celsius, which is enough to melt lead.
Glaze attributes it to something that may have happened a very, very long time ago.
In a related context, a study published last Monday in the journal “Nature Geoscience” saw that the Earth’s core, which is a flaming ball the size of Pluto, can move freely within a liquid envelope that forms the outer core. It may have stopped rotating and may have started moving in the opposite direction, in conclusion. The debate between specialists will escalate on this issue.
This “planet within the Earth” is composed mainly of iron, and is located at a depth of 5 thousand kilometers below the Earth’s surface.
The exact process of the core’s rotation is a matter of debate, because the limited information available is based on careful analysis of seismic waves generated by earthquakes as they pass through the center of the planet.
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After researchers, Xiao Dong Song and Yi Yang from Peking University, analyzed seismic wave data for the last 60 years, they concluded that the rotation of the nucleus “became almost stopped in 2009, before it resumed moving in the other direction.”
“We believe that the central nucleus rotates in one direction relative to the Earth’s surface, similar to the movement of a seesaw,” the two specialists told AFP.
They pointed out that “the full cycle (in both directions) of the central nucleus takes about seventy years.”
The last change in rotation before that which occurred in 2009 dates back to the early seventies of the twentieth century, while the next change will be recorded in the mid-forties of the current century, thus completing the nucleus cycle, according to the two Chinese researchers.