Connect with us

Space

Thinking planet: Earth knows how to regulate the global climate itself

Published

on

Scientists have proven that our planet has geological mechanisms that protect its climate from catastrophic events. In other words, the Earth seems to be able to think.

The Earth has gone through many turbulent times: our planet has had periods of global volcanism, epochs of glaciation, sharp increases and decreases in solar radiation fluxes. And yet, for the last 3.8 billion years, life has continued to evolve on our planet.

Scientists suspected that the Earth has some kind of “fuse” that keeps the climate in a habitable range. But until recently, researchers could not prove its existence.

What is this “tool” and how it works, researchers at the Massachusetts Institute of Technology (MIT) found out. They confirmed that the planet has a so-called “stabilizing feedback” mechanism.

This mechanism has been working for hundreds of thousands of years, slowly but surely pushing the Earth’s climate away from the edge of the abyss, in which life can no longer appear again.

Scientists believe this feedback is based on a geological phenomenon called silicate weathering. This is a slow but constant process involving a series of chemical reactions that take place in silicate rocks. They “pull” carbon dioxide out of the atmosphere, “burying” it in sedimentary rocks on the ocean floor.

Scientists have long noted the important role of silicate weathering in regulating the Earth’s carbon cycle.

This mechanism may be the geologically constant force that keeps the concentrations of carbon dioxide in the atmosphere at a level acceptable for the existence of life. As a consequence, global temperatures are “under control” of Mother Earth.

Let us clarify that this idea has been around for many years, but so far there has been no direct evidence that such a feedback operates continuously over millions of years.

Now, MIT researchers have applied mathematical analysis to uncover patterns in paleoclimate data over the past 66 million years.

The research team has been searching the dataset for some recurring phenomena that would keep global temperatures within a habitable range all this long.

So scientists discovered that a constant pattern really exists. The temperature on Earth can fluctuate for some time, critically rising or falling, but then inevitably stabilizes. As if someone is looking after the balance (scientists are not inclined to believe in the supernatural, attributing everything to natural processes).

True, the process of temperature stabilization is very slow: it takes hundreds of thousands of years. This duration coincides with how long, according to researchers, the weathering of silicates lasts.

This is the first work in which evidence supports the existence of such a stabilizing feedback.

The results obtained by MIT scientists may explain how the Earth remained habitable despite the fact that its geological past is filled with dramatic climatic events, many of which could lead to the apocalypse.

“On the one hand, this is good, because now we know that today’s global warming will be neutralized thanks to this stabilizing feedback,” says co-author of the work, graduate student Konstantin Arnscheidt. “But, on the other hand, this will take hundreds of thousands of years, and our decisions today’s problems are needed now.”

The study was published in Science Advances.

Continue Reading

Space

‘October Surprise’: Russia To Launch Nukes in Space

Published

on

By


The ‘national security threat’ announced on Wednesday is
about Russia planning to launch nuclear weapons in space, causing some
to speculate whether it’s really an election year ploy.

The panic began when House Intelligence Committee Chair Mike Turner
(R-Ohio) asked President Biden to declassify information about a
“serious national security threat”.

Modernity.news reports: The weapon would reportedly be designed to be used to take out satellites.

Speaker Mike Johnson (R-La.) responded by telling reporters he wanted “to assure the American people, there is no need for public alarm.”

The big, scary threat is serious business and involves a space-based nuke controlled by evil dictator Putin, but it’s also “not an immediate crisis,” according to what three members of the U.S. House Intelligence Committee have told Politico.

Okay, then. Just for election season, is it?

Zero Hedge reports: “So, the question is – was this:

a) a distraction from Biden’s broken brain, or

2) a last desperate attempt to get more funding for anything-but-the-US-border, or

iii) a path to pitching Putin as the uber-bad-guy again after his interview with Tucker Carlson.”

Just by coincidence, Mike Turner recently returned from Ukraine having lobbied for billions more in weapons and aid for Zelensky’s government.

Some questioned the timing, suggesting it might all be a deep state plot to keep American voters afraid when they hit the ballot box.

Speculation will now rage as to whether this is “the event,” real or imagined, that billionaires and elitists the world over have been building underground survival bunkers in preparation for.

Continue Reading

Space

Earth has built-in protection from asteroids

Published

on

By

Asteroids are not just wandering space rocks, but a potential threat
to Earth. But what if the Earth already has its own built-in defenses
against them? Recent research published on the preprint server arXiv puts forward an unusual theory: Earth’s gravitational forces may serve as its secret shield against asteroids.

Our
planet uses powerful gravitational interactions with other celestial
bodies to break apart asteroids that approach it. These tidal forces,
akin to those that explain Earth’s tides caused by the Moon, can be so
intense that objects undergo tidal disruption, causing them to be torn
apart.

Observations of fragments of Comet Shoemaker-Levy 9 after
its collision with Jupiter in 1994 provided the first confirmation of
this phenomenon. However, for decades astronomers have been looking for
evidence that Earth or other terrestrial planets could have a similar
effect on asteroids and comets.

Planetary scientist Mikael Granvik
from the Swedish University of Technology, Luleå, led the research that
came closer to solving the above phenomenon.

His
discovery is linked to the search for gravitationally disrupted
near-Earth asteroids (NEAS), and provides compelling evidence that our
planet’s gravitational forces are not just an abstract concept, but a
factor capable of breaking asteroids into small pieces.

Based on
modeling of asteroid trajectories, Grunwick and colleague Kevin Walsh of
the Southwest Research Institute found that collisions with rocky
planets can cause asteroids to lose a significant portion of their mass,
turning them into debris streams.

New data shows that small
asteroid fragments, while not posing a threat to life on the planet, may
nevertheless increase the likelihood of local collisions like those
that occurred in Tunguska and Chelyabinsk.

Granwick assures that
asteroids smaller than 1 km in diameter are not a critical threat, but
increase the likelihood of incidents. However, it is worth remembering
the additional risks that may arise due to the formation of new debris
clouds.

Continue Reading

Trending

Generated by Feedzy