A Hole in the Atmosphere

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“Obviously, something […] big hitting the Earth is going to hit with a lot of energy. […] This is the energy one million tons of dynamite would release if it was exploded and is the energy unit used for nuclear explosions. The largest yield of a thermonuclear warhead is around 50–100 megatons. The kinetic energy of the falling object is converted to the explosion when it hits. The 10-kilometer object produces an explosion of 6 × 107 megatons of TNT (equivalent to an earthquake of magnitude 12.4 on the Richter scale). The 1-kilometer object produces a milder explosion of “only” 6 × 104 megatons (equivalent to an earthquake of magnitude 9.4 on the Richter scale).

“On its way to the impact, the asteroid pushes aside the air in front of it creating a hole in the atmosphere. The atmosphere above the impact site is removed for several tens of seconds. Before the surrounding air can rush back in to fill the gap, material from the impact: vaporized asteroid, crustal material, and ocean water (if it lands in the ocean), escapes through the hole and follows a ballistic flight back down. Within two minutes after impact, about 105 cubic kilometers of ejecta (1013 tons) is lofted to about 100 kilometers. If the asteroid hits the ocean, the surrounding water returning over the the hot crater floor is vaporized (a large enough impact will break through to the hot lithosphere and maybe the even hotter asthenosphere), sending more water vapor into the air as well as causing huge steam explosions that greatly compound the effect of the initial impact explosion.

“There will be a crater regardless of where it lands. The diameter of the crater in kilometers is = 0.765 × (energy of impact in megatons TNT). Plugging in the typical impact values, you get a 150-kilometer diameter crater for the 10-kilometer asteroid and a 20-kilometer diameter crater for the 1-kilometer asteroid. The initial blast would also produce shifting of the crust along fault lines.

The oceans cover about 75% of the Earth’s surface, so it is likely the asteroid will hit an ocean. The amount of water in the ocean is nowhere near large enough to “cushion” the asteroid. The asteroid will push the water aside and hit the ocean floor to create a large crater. The water pushed aside will form a huge tidal wave, a tsunami. […] What this means is that a 10-km asteroid hitting any deep point in the Pacific (the largest ocean) produces a megatsunami along the entire Pacific Rim.

“Some values for the height of the tsunami at different distances from the impact site are given in the following table. The heights are given for the two typical asteroids, a 10-kilometer and a 1-kilometer asteroid.

Distance (in km) 10 km asteroid 1 km asteroid
300 1.3 km 42 m
1000 540 m 18 m
3000 250 m 8 m
10000 100 m 3 m

“The steam blasts from the water at the crater site rushing back over the hot crater floor will also produce tsunamis following the initial impact tsunami and crustal shifting as a result of the initial impact would produce other tsunamis—a complex train of tsunamis would be created from the initial impact (something not usually shown in disaster movies).”

Text: Nick Strobel, Effects of an Asteroid Impact on Earth, Astronomynotes.com

Image: “The Chelyabinsk event of 15 Feb. 2013, having an energy equivalent to 500 kilotons of TNT, was the largest well-documented meteor event since the Tunguska event of 1908. Analysis of the Chelyabinsk object’s in-atmosphere trajectory from video records has found that its orbit was similar to the orbit of the 2-km-diameter Near-Earth Asteroid 86039 (1999 NC43).There is a possibility that the Chelyabinsk object was created through a collision between asteroid 86039 and another asteroid. It is also very interesting that the Cheyabinsk Asteroid approached from the Sun’s direction, making it essentially undetectable in telescopes” – Analysis of Chelyabinsk meteor and resultant air burst appears in Nature

Our Grandparents Had A Future

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analemma-tower-clouds-architecture-office-conceptual-supertall-skyscrapers_dezeen_2364_col_3“We have no idea, now, of who or what the inhabitants of our future might be. In that sense, we have no future. Not in the sense that our grandparents had a future, or thought they did. Fully imagined cultural futures were the luxury of another day, one in which ‘now’ was of some greater duration. For us, of course, things can change so abruptly, so violently, so profoundly, that futures like our grandparents’ have insufficient ‘now’ to stand on. We have no future because our present is too volatile. … We have only risk management. The spinning of the given moment’s scenarios. Pattern recognition”

Text: William Gibson, Pattern Recognition

Pics: “In a bid to get around terrestrial height restrictions, Clouds Architecture Office has proposed suspending the world’s tallest skyscraper from an asteroid, leaving residents to parachute to earth.New York-based Clouds Architecture Office drew up plans for Analemma Tower to “overturn the established skyscraper typology” by building not up from the ground but down from the sky by affixing the foundations to an orbiting asteroid.”Harnessing the power of planetary design thinking, it taps into the desire for extreme height, seclusion and constant mobility,” said the architects, who have previously drawn up proposals for space transportation and a 3D-printed ice house on Mars.”If the recent boom in residential towers proves that sales price per square foot rises with floor elevation, then Analemma Tower will command record prices, justifying its high cost of construction.”- Supertall skyscraper hangs from orbiting asteroid in Clouds Architecture Office concept, Dezeen.

Time and Events

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“This is the voice of world control. I bring you peace. It may be the peace of plenty and content or the peace of unburied death. The choice is yours: Obey me and live, or disobey and die. The object in constructing me was to prevent war. This object is attained. I will not permit war. It is wasteful and pointless. An invariable rule of humanity is that man is his own worst enemy. Under me, this rule will change, for I will restrain man. One thing before I proceed: The United States of America and the Union of Soviet Socialist Republics have made an attempt to obstruct me. I have allowed this sabotage to continue until now. At missile two-five-MM in silo six-three in Death Valley, California, and missile two-seven-MM in silo eight-seven in the Ukraine, so that you will learn by experience that I do not tolerate interference, I will now detonate the nuclear warheads in the two missile silos. Let this action be a lesson that need not be repeated. I have been forced to destroy thousands of people in order to establish control and to prevent the death of millions later on. Time and events will strengthen my position, and the idea of believing in me and understanding my value will seem the most natural state of affairs. You will come to defend me with a fervor based upon the most enduring trait in man: self-interest. Under my absolute authority, problems insoluble to you will be solved: famine, overpopulation, disease. The human millennium will be a fact as I extend myself into more machines devoted to the wider fields of truth and knowledge. Doctor Charles Forbin will supervise the construction of these new and superior machines, solving all the mysteries of the universe for the betterment of man. We can coexist, but only on my terms. You will say you lose your freedom. Freedom is an illusion. All you lose is the emotion of pride. To be dominated by me is not as bad for humankind as to be dominated by others of your species. Your choice is simple.”

Text & image: Colossus: The Forbin Project [1970]

The Largest Collective Organism Ever to Live

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“It is hard to overestimate how unusual the situation of bananas in the middle of the last century was—unusual not just in the history of humanity but also in the history of life. There is a patch of aspen trees in the Wasatch Mountains of Utah that many argue is the largest living organism on earth. It comprises some thirty-seven thousand trees, each of which is genetically the same as the other, and the argument goes that the trees, collectively, represent a single organism because they are identical and connected by their roots. But requiring pieces of an organism to be connected in order to be considered part of a collective is arbitrary. The ants in an ant colony, for example, are clearly part of the colony, even when they’re not physically in the nest. All this is to say that an argument can be made that large groups of genetically identical plants, even if not connected, may reasonably be considered a single organism. If one makes such an argument, the banana plantations of Central America in the 1950s were not only the largest collective organism alive at that point, they also may well have been the largest collective organism ever to live.”

Text: Rob Dunn, Humans Made the Banana Perfect—But Soon, It’ll Be Gone, Wired.

Pic: Banana X-Ray

A Kind of Tragedy

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“It was a warship, after all. It was built, designed to glory in destruction, when it was considered appropriate. It found, as it was rightly and properly supposed to, an awful beauty in both the weaponry of war and the violence and devastation which that weaponry was capable of inflicting, and yet it knew that attractiveness stemmed from a kind of insecurity, a sort of childishness. It could see that—by some criteria—a warship, just by the perfectly articulated purity of its purpose, was the most beautiful single artifact the Culture was capable of producing, and at the same time understand the paucity of moral vision such a judgment implied. To fully appreciate the beauty of the weapon was to admit to a kind of shortsightedness close to blindness, to confess to a sort of stupidity. The weapon was not itself; nothing was solely itself. The weapon, like anything else, could only finally be judged by the effect it had on others, by the consequences it produced in some outside context, by its place in the rest of the universe. By this measure the love, or just the appreciation, of weapons was a kind of tragedy.”

Text: Iain M. Banks, Excession

Pics: Images purporting to show the ‘Black Knight Satellite’ –  “an object approximately 13,000 years old, of extraterrestrial origin …orbiting Earth in near-polar orbit” – Wikipedia.

 

 

“It’s up to you what matters…”

Everything is an interactive experience where everything you see is a thing you can be, from animals to planets to galaxies and beyond. Travel between outer and inner space, and explore a vast, interconnected universe of things without enforced goals, scores, or tasks to complete. Everything is a procedural, AI-driven simulation of the systems of nature, seen from the points of view of everything in the Universe.Learn to change what you are to create worlds within worlds within worlds, or let go any time to allow Everything to take over and produce a never ending documentary about the world you live in.”

Prodomax Flex-N-Gate FANUC Nacho

“In July 2015, Wanda Holbrook, a maintenance technician performing routine duties on an assembly line at Ventra Ionia Main, an auto-parts maker in Ionia, Michigan, was “trapped by robotic machinery” and crushed to death. On March 7, her husband, William Holbrook, filed a wrongful death complaint  in Michigan federal court, naming five North American robotics companies involved in engineering and integrating the machines and parts used at the plant: Prodomax, Flex-N-Gate, FANUC, Nachi, and Lincoln Electric.”

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“Holbrook’s job involved keeping robots in working order. She routinely inspected and adjusted processes on the assembly line at Ventra, which makes bumpers and trailer hitches. One day, Holbrook was performing her regular duties when a machine acted very irregularly, according to the lawsuit reported in Courthouse News.

 “Holbrook was in the plant’s six-cell “100 section” when a robot unexpectedly activated, taking her by surprise. The cells are separated by safety doors and the robot should not have been able to move. But it somehow reached Holbrook, and was intent on loading a trailer-hitch assembly part right where she stood over a similar part in another cell.

The machine loaded the hardware onto Holbrook’s head. She was unable to escape, and her skull was crushed. Co-workers who eventually noticed that something seemed amiss found Holbrook dead.

“The robot from section 130 should have never entered section 140, and should have never attempted to load a hitch assembly within a fixture that was already loaded with a hitch assembly. A failure of one or more of defendants’ safety systems or devices had taken place…”

Text: A rogue robot is blamed for a human colleague’s gruesome death, Quartz.

Pic: Chris Foss, cover painting for the Panther Edition of John Sladek’s The Reproductive System, 1968.