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Strategies & Market Trends : 2026 TeoTwawKi ... 2032 Darkest Interregnum -- Ignore unavailable to you. Want to Upgrade?


To: marcher who wrote (174330)7/6/2021 8:34:46 PM
From: TobagoJack  Read Replies (2) | Respond to of 217769
 
NASA tees up subject matter

zerohedge.com

Why Is NASA Working So Hard To Learn How To Defend The Earth From Giant Asteroids? Authored by Michael Snyder via The Economic Collapse blog,

Did you know that NASA is going to send a spacecraft on a suicide mission in an attempt to change the trajectory of a massive space rock? The good news is that the space rock that NASA will be crashing this spacecraft into is not on a collision course with Earth. It is only a test. But why has NASA suddenly become so concerned with figuring out how to defend the Earth from giant asteroids? Could it be possible that there is something heading toward Earth in the future that they haven’t told us about yet?

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According to NASA, there are more than 26,000 asteroids that pass near Earth, and more than 2,000 of them are classified as “potentially dangerous” asteroids.

Most of those “potentially dangerous” asteroids aren’t that large, but 158 of them do have a diameter of more than one kilometer.

If one of those monsters were to hit us, it would be a disaster of cataclysmic proportions.

Of course there are countless other space rocks that our scientists have not discovered yet, and those probably represent the greatest threat. Because if you don’t see a threat coming, you can’t get prepared for it in advance.

These days, NASA officials have become quite preoccupied by the threat that giant space rocks potentially pose, and we are being told that “scientists are at work on a plan to avoid the destruction of Earth by an errant asteroid”. The following comes from an article that was just published by the Boston Globe

NASA and a cadre of the world’s leading engineers and space scientists are at work on a plan to avoid the destruction of Earth by an errant asteroid like the one 65 million years ago that wiped out the dinosaurs, created a cloud of dust so impenetrable that it blocked out the sun, and plunged the planet into a prolonged winter that sent half of all plant life into extinction.


Personally, I think that this is something that NASA should definitely be focusing on, because the threat is very real.

Most people don’t realize this, but our planet is actually being pelted by space debris on a constant basis at this point. In fact, NASA says that we are being hit by very small objects “every day”

Every day, Earth is bombarded by tons of dust and sand-sized particles from the solar system. Meteoroids burn up as they enter the Earth’s atmosphere causing little or no damage. They are easy to spot, streaking across the night sky in brilliant, short-lived bursts of light. Of more concern are the asteroids that pass by Earth unnoticed; they are difficult to detect and track as observers depend on reflected sunlight to spot them.


Thankfully, the vast majority of the objects that we encounter are too small to do any damage.

But it is just a matter of time before a really big space rock comes along.

NASA officials like to give the impression that they have a really good idea of what is going on up there, but the truth is that our ability to detect large space rocks is still quite limited. In May, a “potentially hazardous” asteroid that came close to Earth was only discovered about a week before it arrived

The reason why 2021 KT1 is news is that NASA estimates that it’s between 492 feet/150 meters and 1,082 feet/330 meters in diameter. It wasn’t observed until late in May 2021 just a week before its closest pass.


And late last year a fairly large asteroid was not discovered until it had already buzzed dangerously close to our planet

Wow. A low-flying space rock set a record last Friday (appropriately, the 13th), when 2020 VT4 passed just under 400 kilometers (250 miles) over the Southern Pacific.


The asteroid was spotted by the Asteroid Terrestrial-impact Last Alert System (ATLAS) survey at the Mauna Loa Observatory in Hawaii in the early morning hours of Saturday, November 14th, just 15 hours after approach. This is not uncommon for fast-movers, especially asteroids that are coming at the Earth from our sunward blind-spot, like 2020 VT4.


So if a major threat is headed our way, we may or may not see it coming in advance.

If we do have advance warning that a huge asteroid is coming, obviously we would want to try to do something about it. With such a scenario in mind, NASA will soon be crashing the DART spacecraft into a giant space rock called Dimorphos

Developed by a team of scientists from the Johns Hopkins University Applied Physics Laboratory and NASA’s Planetary Defense Coordination Office, DART is an unmanned, remotely controlled astronomical suicide mission designed to nudge an asteroid that is half a mile in diameter out of its orbit. Doomsayers take note: This is only a test. The asteroid in question, Didymos — Greek for “twin,” and so named because it was discovered to be paired with its own small moon — is not actually on a collision course with Earth.


Sometime between Thanksgiving week (perhaps as soon as the evening of Nov. 23) and February 2022, the team behind DART will launch it from Vandenberg Space Force Base in California on a SpaceX Falcon 9 rocket. The spacecraft will, if all goes according to plan, travel 6.8 million miles to reach and collide with Didymos’s moonlet, Dimorphos, which is 525 feet in diameter.


Is NASA testing out technology that they plan to use on another giant space rock at a later date?

Some have suggested that an asteroid known as Apophis could hit us on April 13th, 2029

On April 13, 2029 (which happens to be Friday the 13th), something unsettling will happen.


A decent-sized asteroid, the 1,100-foot-wide Apophis, will pass so close to Earth it’ll be visible in the sky from certain places. Crucially, the giant rock will not strike our humble planet. But it will pass closer than 20,000 miles from the surface, which is closer than where some of the United States’ most prized weather satellites orbit.


But NASA insists that Apophis will not hit us “for at least a century”

After its discovery in 2004, asteroid 99942 Apophis had been identified as one of the most hazardous asteroids that could impact Earth. But that impact assessment changed as astronomers tracked Apophis and its orbit became better determined.


Now, the results from a new radar observation campaign combined with precise orbit analysis have helped astronomers conclude that there is no risk of Apophis impacting our planet for at least a century.


Estimated to be about 1,100 feet (340 meters) across, Apophis quickly gained notoriety as an asteroid that could pose a serious threat to Earth when astronomers predicted that it would come uncomfortably close in 2029. Thanks to additional observations of the near-Earth object (NEO), the risk of an impact in 2029 was later ruled out, as was the potential impact risk posed by another close approach in 2036.


The orbit of Apophis is now very well known by astronomers all over the globe. To me, all of the giant space rocks that are floating around up there that we don’t know about represent a much greater threat.

Unfortunately, the number of large space rocks going by our planet has been steadily increasing, and I believe that there is a good chance that we could see an asteroid impact long before 2029 ever rolls around.

If NASA officials know about such a threat, for now they aren’t admitting that to the public.

But they are admitting that they are trying to figure out how to deflect a very large asteroid, and that should definitely be getting our attention.

* * *

Michael’s new book entitled “Lost Prophecies Of The Future Of America” is now available in paperback and for the Kindle on Amazon.



To: marcher who wrote (174330)7/6/2021 8:47:04 PM
From: TobagoJack1 Recommendation

Recommended By
marcher

  Respond to of 217769
 
Re Message 33387664 <<NASA ... asteroid ... plan>>, I remain agnostic, but am naturally supposing that competition is good, especially when folks compete to save us

I am comforted by competition to save all folks, and know that GOP, DNC, and CCP are on the job.

When the call of duty comes, I am sure that at least one of the three shall get on with the job at hand with alacrity, as opposed to either weaponising for political end whilst milling precious time, or subcontracting to Elon Musk / Tesla.

:0)

scmp.com

How 23 giant Chinese rockets could save the world from ‘doomsday’ asteroid



China can send mammoth machines into space which travel for years then deflect problematic rocks

Same devices have been criticised recently because one plummeted back to Earth in uncontrolled re-entry China’s space programme could one day save the world, with massive rockets travelling for years to defend the planet from huge asteroids capable of wiping out entire cities, according to a government-backed study.

This saviour role is unexpected given these are the same machines seen as a threat by many, including the United States, just weeks ago; the main 20-tonne section from one such rocket fell back to Earth in May in an uncontrolled re-entry. It fell into the sea or burned up beforehand, although last year fragments from another rocket were said to have hit two villages in the West African country, Ivory Coast .

Now a new government-funded study says China can launch 23 Long March 5 (CZ-5) rockets – the largest in its fleet, weighing almost 900 tonnes on take-off – to break up the rocky objects in our solar system. Some asteroids are as small as pebbles but others are hundreds of kilometres across. An asteroid about 500 metres (1,640 feet) wide could kill millions.

Although the chance of one colliding with the Earth is currently low, there is one called Bennu which could hit in about a century. Researcher Li Mingtao and his colleagues at the National Space Science Centre in Beijing have been commissioned to find out how China can step in and try to ensure humans do not go the way of the dinosaurs. The asteroid that led to their extinction was around 10km (6 miles) wide.

To change the course of a giant asteroid hurtling towards us at terrifying speeds, a lot of kinetic energy would be needed. Nuclear weapons might do the job but such a blast could break the target into several threatening chunks.

In their proposal, the space centre team suggested launching 23 CZ-5 rockets from various sites across China, at the same time. The spacecraft would have to travel for almost three years to reach their target.

On top of each rocket would be a deflector, a device designed to avoid breaking up the asteroid. Each rocket would “hit” the asteroid, one after another, by way of a gentle nudge.

This would only change the course of a Bennu-sized asteroid slightly, but enough to make it pass safely at a distance about 1.4 times the radius of the Earth and save some cities from annihilation, according to Li’s calculations.

“[It is] possible to defend against large asteroids with a nuclear-free technique within 10 years,” said Li and colleagues in a June paper published in Icarus , an international journal for solar system studies.

The CZ-5 is the backbone of China’s space programme, a more-than-handy workhorse used in space station construction and Mars exploration. The problem is its size becomes an issue during free fall back to Earth, travelling at thousands of miles an hour.

Western authorities including the US Space Force have said they carefully tracked each CZ-5 after each launch. In May US Defence Secretary Lloyd Austin hoped the rocket of concern at the time would “land in a place where it will not harm anyone. Hopefully in the ocean, or someplace like that.”

He also said there was a need to make sure “those kinds of things” were taken into consideration when planning and conducting operations. Some Western media warned readers that the debris might hit big cities.

That did not happen but led to an increased focus on China’s responsibility as a space power.

In the Icarus paper Li and his colleagues said fuel not used during the rocket launch could give extra thrust during the flight towards an asteroid, and the rocket fuselage also increased the total mass of the deflector. They said existing rockets only had to undergo small modifications such as adding a few small thrusters.

A similar mission proposed by researchers with Nasa and California’s Lawrence Livermore National Laboratory in 2018 would require the launch of 75 Delta IV heavy rockets, according to the two organisations and mentioned by Li.

Known as HAMMER (Hypervelocity Asteroid Mitigation Mission for Emergency Response), the US plan would deliver more than 400 tonnes of deflectors, nearly twice as many as in the Chinese proposal, but with a flight time nearly a year shorter, to achieve similar results.

The US mission would be more expensive than the Chinese one, Li said. The Chinese plan also needs less preparation time. While the American approach would need to discover an asteroid 25 years before its potential collision with Earth, China’s plan could cut the lead time to just a decade.

Overall, the Chinese approach, involving what is called the Assembled Kinetic Impactor, could greatly improve deflection efficiency and reduce both launch costs and lead time, the paper said.

A space scientist at Beijing’s Tsinghua University said competition between China and the US would accelerate the development of space technology.

“The problem is, when the doomsday threat comes, politics may override science and lots of time may be wasted on debates to decide which country should take the lead,” said the researcher, who did not want to be named because of the sensitivity of the issue.

China has been challenging US dominance in space for some time. It already has a rover on Mars, is building a space station, exploring the far side of the moon and studying lunar samples recently retrieved by robots.

The US launched its first asteroid defence programme decades ago. It has the only asteroid-warning radar system on Earth and one of its spacecraft is returning home after obtaining samples from Bennu, the asteroid that could hit us in about a century. In 2025 China is expected to launch its own spacecraft to retrieve asteroid samples.

China is also building a planetary defence system with what will be the most powerful radar in the world, according to researchers involved in the project. It will be made up of large radio telescopes across the country and be able to track more targets than its US counterpart.