WHAT IF? 3+ ALIEN INVASION SCENARIOS

[Marduk2012 Profile]

WHAT IF? 3+ ALIEN INVASION SCENARIOS




1. When Aliens Attack

There are approximately 100 sextillion stars in the universe – and that’s a very large number, and a very conservative estimate. Around these stars are an incalculable number of planets. The Drake Equation, devised by astronomer and astrophysicist Frank Drake, is used to calculate how many extra-terrestrial civilizations are just in our galaxy, the Milky Way – never mind the others 100 or so billion.

When Aliens Attack sees some of the world’s top scientists coming up with a scientifically plausible model of what an alien invasion would look like, addressing such questions as: What would the aliens be like? How would they get here? What kind of weapons would they use? How would alien wars unfold? The experts are really big hitters in the fields of astrophysics, astrobiology, astronomy, theoretical physics and military theory. People like, Lynn Rothschild, Astrobiologist at the Nasa Ames Research Center; Gibor Basri, Professor of Astronomy at the University of California – Berkeley; Michio Kaku, Professor of Theoretical Physics at the City University of New York; and Seth Shostak, Senior Astronomer at the SETI Institute.

Starting with Drake’s Equation the group of scientists try to map out exactly what would happen if the Earth was to be attacked – and most importantly how mankind would fight back against these hostile invaders from the stars.





Mankind's ultimate weapon of resistance:

Human suicide missions with helium balloons




2. Alien Invasion: Are We Ready?

We've read the books, we've seen the movies. War of the Worlds, V, Independence Day. But they're all fiction, right? Well, probably not. New science is suggesting that aliens may be very real, and that they may not be as cuddly as E.T. Host Michelle Rodriguez (Avatar, Battle:LA) brings together top scientists, military strategists and writers to dramatize what would happen if and when aliens attacked.





Mankind's ultimate weapon of resistance:

The Thunder well



3. Physics Of The Impossible Alien Invasion




Dr. Michio Kaku has a plan to counter attack an alien invasion on Earth.

Mankind's ultimate weapon of resistance:

Actually doing nothing at all but finding out alien weakspots through intense alien strategy analysis



Merry Christmas fellow DTV'ers

[Tuor10 Profile]

The suicide balloons made me laugh. Ironically enough though; in all probability, simple means of warfare might actually be the best form of defence against a highly, technologically advanced Alien race.
According to some UFO witnesses in the military - who have bared witnessed to downed UFO craft, radar and non-guided projectile weapons, seem to have an affect, as opposed to guided weapons,or weapons with electronic guidence systems.
Of course, we might have technology already that is designed to counter a supposed Alien threat. I mean, all those Billions that have been spent on black projects must have some purpose. It is clearly not developed for conventional purposes.

BTW: Merry Christmas

[Taurus82 Profile]

nice post

[Marduk2012 Profile]

The "Thunderwell" is a kick ass weapon never heard of it before till i watched this documentary on TV yesterday.

The Thunderwell Story

The February/March 1992 issue of Air & Space magazine, published by the Smithsonian, contained an article about nuclear rocket propulsion:

Overachiever
"Every kid who has put a firecracker under a tin can understands the principle of using high explosives to loft an object into space. What was novel to scientists at Los Alamos [the atomic laboratory in New Mexico] was the idea of using an atomic bomb as propellant. That strategy was the serendipitous result of an experiment that had gone somewhat awry.

"Project Thunderwell was the inspiration of astrophysicist Bob Brownlee, who in the summer of 1957 was faced with the problem of containing underground an explosion, expected to be equivalent to a few hundred tons of dynamite. Brownlee put the bomb at the bottom of a 500-foot vertical tunnel in the Nevada desert, sealing the opening with a four-inch thick steel plate weighing several hundred pounds. He knew the lid would be blown off; he didn't know exactly how fast. High-speed cameras caught the giant manhole cover as it began its unscheduled flight into history. Based upon his calculations and the evidence from the cameras, Brownlee estimated that the steel plate was traveling at a velocity six times that needed to escape Earth's gravity when it soared into the flawless blue Nevada sky. 'We never found it. It was gone,' Brownlee says, a touch of awe in his voice almost 35 years later. "The following October the Soviet Union launched Sputnik, billed as the first man-made object in Earth orbit. Brownlee has never publicly challenged the Soviet's claim. But he has his doubts."

Although the shaft test goes unnamed in the article, only two shaft shots were fired before Sputnik was launched on 4 October 1957 - Pascal-A and Pascal-B. The nighttime Pascal-A shot could not have been the shot involved, since notably absent from the accounts of Pascal-A are the dazzlingly brilliant fireball streaking into the heavens that such an object would produce. Also Pascal-B was the only one of the two that was fired in summer as the article describes. This conclusion was confirmed to this author by Dr. Robert Brownlee, who has written expressly for this website his own account of this event.

Objects can only be propelled to very high velocities by a nuclear explosion if they are located close to the burst point. Once a nuclear fireball has grown to a radius that is similar in size to the radius of a quantity of high explosive of similar yield, its energy density is about the same and very high velocities would not be produced. This radius for a 300 ton explosion is 3.5 meters.

The steel plate at the top of the shaft was over 150 m from the nuclear device, much too far for it to be propelled to extreme velocity directly by the explosion. The feature of Pascal-B that made this possible was the placement of the collimator close to the device. The mass of the collimator cylinder was at least 2 tonnes (if solid) and would have been vaporized by the explosion, turning it into a mass of superheated gas that expanded and accelerated up the shaft, turning it into a giant gun. It was the hypersonic expanding column of vaporized concrete striking the cover plate that propelled it off the shaft at high velocity.

To illustrate the physics, and estimate how fast it might have been going, consider that if the collimator absorbed a substantial part of the explosion energy (say a third of it, or 100 tons) it would have been heated to temperatures far higher than any conventional explosive (by a factor of 50 with the previous assumption).

The maximum velocity achieved by an expanding gas is determined by the equation:

u = 2c/(gamma - 1)


where u is the final velocity, c is the speed of sound in the gas, and gamma is the specific heat ratio of the gas. If we further assume that the thermodynamic properties of vaporized concrete are similar to the hot combustion gases of high explosives, then the speed of sound in the vaporized collimator would be about 7 km/sec (the square root of 50 times the value of c for an explosive combustion gases, which is 1 km/sec). For molecular gases gamma is usually in the range of 1.1 to 1.5, for explosives it is 1.25. Thus we get:

u = 2*7 km/sec / (1.25 - 1) = 56 km/sec


This is about five times Earth's 11.2 km/sec escape velocity, quite close to the figure of six times arrived at by Dr. Brownlee in his detailed computations.

But the assumption that it might have escaped from Earth is implausible (Dr. Brownlee's discretion in making a priority claim is well advised). Leaving aside whether such an extremely hypersonic unaerodynamic object could even survive passage through the lower atmosphere, it appears impossible for it to retain much of its initial velocity while passing through the atmosphere. A ground launched hypersonic projectile has the same problem with maintaining its velocity that an incoming meteor has. According to the American Meteor Society Fireball and Meteor FAQ meteors weighing less than 8 tonnes retain none of their cosmic velocity when passing through the atmosphere, they simply end up as a falling rock. Only objects weighing many times this mass retain a significant fraction of their velocity.

The fact that the projectile was not found of course is no proof of a successful space launch. The cylinder and cover plate of Pascal-A was also not found, even though no hypersonic projectile was involved. Even speeds typical of ordinary artillery shells can send an object many kilometers, beyond the area of any reasonable search effort.

Also, apparently the project name "Thunderwell" refers to a proposed project that was never carried out. Carl Feynman, by email, related the following account:

In the mid-80s I heard of a "Project Thunderwell" from someone who had been employed at Livermore. In about 1991, I asked Dr. Lowell Wood about it, who was (and presumably still is) a prominent weapon physicist at Livermore. He told me that it was a project, never actually constructed, to launch a spacecraft on a column of nuclear-heated steam. The idea was that a deep shaft would be dug in the earth and filled with water. A spacecraft would be placed atop this shaft, and a nuclear explosive would be detonated at the bottom.
http://nuclearweaponarchive.org/Usa/Tes ... ml#PascalB

[Tuor10 Profile]

Energy and mass can be used to great effect. Those pesky Aliens should be afraid.

[Marduk2012 Profile]

If i was an evil alien invader overlord i would a create a bioweapon that kill only humans and release it into earth´s atmosphere....and wait

eheh

[Tuor10 Profile]

If i was an evil alien invader overlord i would a create a bioweapon that kill only humans and release it into earth´s atmosphere....and wait

eheh

That is evil.

[Marduk2012 Profile]

If i was an evil alien invader overlord i would a create a bioweapon that kill only humans and release it into earth´s atmosphere....and wait

eheh

That is evil.

Well I think itz the most efficient strategy except u want a small % of ze human population as worker drones

[Tuor10 Profile]

If i was an evil alien invader overlord i would a create a bioweapon that kill only humans and release it into earth´s atmosphere....and wait

eheh

That is evil.

Well I think itz the most efficient strategy except u want a small % of ze human population as worker drones

Of course. Aliens like fast food too.

[Tgwusauk Profile]

It is not happening, if they wanted to destroy us they would have done it long before now when we had less technology.
Someone in space is watching over us I feel and has prevented certain situations over the last 10 years, particularly in light of our nuclear weapons.