If the world is invaded by aliens...seriously..

Well, up to now, we are still alone in Universe. Most people would think about alien invade us, but why not we invade those alien? You are talking about they might be 100 years or 200 years more advanced than us. Why not thinking that they are 1 million years less advanced than us? May be, they don't even have clothes now.

If there where aliens i would not be suprised if they did decide to invade us.. and for totally logical reasons. Look at us as a species, we are bloodthirsty, relativelly intelligent and unbelievably cruel to our own species. If i was observing the human species i would logically decide to exterminate it long before it has the technological ability to exterminate me. Lets imagine a giant intergallactic earth battle fleet was to come across an alien home world... Im willing to bet that we would turn it into glass if we had even the slightest concern that it could be a threat to us even in the distant future, its not being nasty or cruel its just being logical. The one and only concern for the leaders of any species would be for their own species.

If we know in advance that they come and/or they stay in orbit, why not launch all our nuke-armed ICBMs at them? If there's time, again produce 50, 100 or more MT nukes, put them on Ariane V and what ever and create a new hell in the skies.

For the lower intensity part, put Patriots and S-400 under the fighters to reach up higher. Hopefully those ships will return radar or emitt IR radiation. Get all kinds of aircraft to carry sunburns/moskits etc... to fire at anything extraterrestric.

The next star is already 4,3Ly away. Traveling at 1/10th the speed of light (wich is 2679times the speed you need to leave earth's gravitation, 429times the speed the fastet human object[Helios in relation to the sun] and 49times the speed you need to leave the sun's gravitation) would require 43 years of travel from the nearest star. That would require the travelers to create an ecosystem in a spaceship to survive half a human lifetime in lone space. (At that speed we also get already relativistic effects)
Maybe in the 14.000.000.000years of the Universe, a species in a reasonable distance (whatever that means) started development just 5.000 years earlier or later, they might still live in caves or have already extinguished themselves.
And if they are that far more advanced I doubt we could realisticly withstand. Perhaps living as rebels in our sewers. And I somehow also doubt they'd try to make contact with us to let us know of their advances, or has one of you ever tried to made contact with rats to schow them the benefit of immunization?

People insist our planet has already been visited by extraterrestrials, and there are countless Youtube videos and documentaries on aliens. One explanation for why aliens didn't wipe us off is because the earth is a place to harvest souls, or a soul farm - when people die, their souls travel to an alien base on the moon, which somehow makes the souls forget their past lives and experiences (what happen to the experiences and memories I don't know), after which the souls reincarnate and live a new life on earth. An alien philosophy, they claim, is that the body is a container for the soul, and technology is a process the body uses to perfect itself. In other words, people use technology to enrich and better their lives, which translate into new experiences for the soul, and technology is always advancing. People reason that humans' intelligence compared with aliens is like comparing dogs' to humans', so if an alien species decides to wipe out humans, they would have done so long ago. People also reason that there are several species of aliens, after observing the different flying saucers that exist in photographs and personal accounts. Furthermore, people reason aliens use earth as a stopping place in their hyper-space travels; that there are "worm holes" leading to extra-dimensional travel across space-time on earth, which explains the "UFO hotspots."

7. Fighters vs. Interceptors.

In our first extra terrestial war, in the defense of Earth, we may need to go back to an important plane concept that started in the fifties but died out in the seventies---the interceptor. Not small, maneuvering dogfighters but long reach, high speed high altitude types that can carry large missiles and best personified by the likes of the MiG-25/31. These types can carry ASATs into high altitude and release them. They will also be used to intercept falling meteors. I would think the best missiles would be something like the R-23 or R-31 used the Foxhounds/Foxbats, or like the Phoenix missile used by the Tomcat. Other missile concepts include Sunburn or Krypton mods, or mods to large ramjet missiles, Brahmos, Onyx, and HF-3. Guidance means would be radar, since UFOs are not really that stealthy, they do show up in radar. Whatever propulsion means the aliens would use to fly with, would produce their own unique radiation signature, and infrared and optical seekers can be set and programmed to find them.

As our conventional fighter forces suffer attrition, we cannot replace our modern but expensive, slow and hard to make fighter designs fast enough. We need to build cheap fast interceptors that can be made to take off in short make shift runaways and act as missile carriers. Some of the designs that I would think of resurrecting for the US side would be the F-104 Starfighter and the F-4 Phantom. A fighter that is currently in production and should stay in production would be the F-15. Stealth is simply not a concern anymore, and if we have to continue building F-22s and F-35s, they will have to be much cheaper by taking stealth out of the cost picture.

For the Russians, I like the Foxhounds and the Flankers. For its short take off, its speed and ruggedness, the MiG-23 Flogger comes into mind. For Europe I can't think of anything but the Typhoon and the Rafale. For China, the Flankers and the J-8II Finbacks, the latter especially.

Speed is the most important thing because we can expect alien ships to be fast, and the first thing in fighting them is to catch them. Having top most speed also gives more speed to the missiles launched, which can improve the way they can catch their targets, or have sufficient energy to penetrate shields or armor, or have enough speed to launch an ASAT into space. They need the speed to respond fastest in a situation, so they can be at Point A or Point b when you need the most. They need the speed to get out of situations like in a nuclear explosion or Tunguska style event.

I am not too optimistic about the survivability of carriers and CVF groups. I don't expect alien fighters to swarm a CVF with Hornets and AEGIS destroyers trying to fight them off. I would expect the first thing the aliens would do is to throw truck sized meteor thingies right at the direction of the CVF. Anything that can be seen from space will be seen, and all that is going to attract falling objects from space. Although AEGIS ships can provide some kind of defense against ballistic objects, at some point, not all the objects can be successfully intercepted, and a Tunguska event over a carrier battle group simply means the end of the group just like that. Any concentration of ships that can be seen from space is going to ask for it.

Bombers can be useful to carry large missiles or ASATs into high altitude. For the US, B-52s, B-2s, B-1Bs, for Russia, the Bears, Blinders, Blackjacks and Backfires, and for China, the H-6s. Unfortunately they also require large bases and runaways, which is expected to be redecorated with a large meteor crater or two. Hence going back to the thin interceptor argument where we can easily hide and protect these through underground tunnels, and maybe even launched them from these, using RATO or Rocket Assisted Take Off, a concept experimented in the Cold War.

8. Reach out and touch someone.

The most cost effective systems that can be used to possibly defend Earth would be our large caliber SAMs. For me the ideal missiles would be the S-300 because of its speed and size, and the PAC-3, because that missile has demonstrated its ABM capabilities. The speed, reach and altitude of these missiles can be used to intercept falling rocks, and hopefully the speed to reach the invader ships, and the kinetic energy to penetrate their defenses.

As Earth is covered three quarters by water, you need water born platforms that can provide area air defense. AEGIS obviously comes into mind with Standard and ESSM, along with Russias RIM-F (S-300 based), Europe's ASTER and China's HHQ-9. But the problem of surface platforms is that anything visible from space is going to be a target sooner or later. Our ships may extract their pound of flesh before going to the bottom if they are lucky, but to the bottom they will inevitably face their fate. Even if the space view of the ships are obstructed by cloudy weather, they cannot hide their heat signatures or their radar visibility. While modern warships are designed with reduce RCS, they are only designed with that from an angle to the side, and not from the top.

That leaves us with our final line of defense. Going underground and going underwater.

(to be continued next time)

If I was Earth's Supreme Commander, WMDs would figure heavily in my defence. Chemical and biological for more local targets like alien landing parties and nuclear weapons for spaceships in orbit and concentrations of targets in Earth's atmosphere. As elaborated on by SampanViking and others, there would be a major danger of infection by diseses that we have no immunity to (maybe diseses that are harmless to the aliens but they have weaponsized to destroy us) so I would task less valuable forces (like infantry divisions) with population and diseses control. The idea would be to prevent refugees fromk spreading diseases, controlling those diseases if they appear and getting some early warning about them by having people looking for the first cases. I would also ask all of Earth's govenments and organizations to give up all relevant information about extraterrestrials that they may have.

Capturing alien technology would be a huge priority. With Earth's weapons you could only fight a losing battle, so I would attempt to capture alien tech at any opportunity, including crashed enemy craft. Enemy bodies would also be a priority, so we could find their weaknesses.

Low-tech solutions would have to quickly replace our satillite networks. Ham radios and the like as well as actual landlines would have to replace our high tech communications. In addition I would dedicate the world's eavesdropping resources (the NSA, etc.) to try to listen in on our visitors from outer space. This wouldn't be as difficult as it sounds; there would be a chance that they would broadcast in the clear because they would believe that we would not be able to hear or translate their language.

Lastly I would stop at nothing to win. That means being open to all options. No matter how crazy the idea sound, if it is an efficient use of resources at least give it consideration.

So basically my strategy breaks down to a few key pieces.
-Nuke them in space and on the ground in large concentrations.
-Gas them and germ them everywhere they are vunerable.
-Swarm them with infantry (AFVs are much to vunerable to alien level-tech).
-Make every effort to capture them and their technology and listen to their communications.
-Also Crobato's ideas on how to use the world's Air Forces and Navies would have a home in my "war plan".

But really the human race has miniscule, microscopic chances against any alien invasion until we develop the ability to move between the stars.

It really depends on what the "aliens" want. Because I think all these conventional means will be futile. Not that you can't kill or destroy them but it wouldn't be that hard for an advanced technology civilization to counter and defend themselves. Short of looking at human beings as a resource, slavery or food, all an alien civilization has to do is make their presence known, sit back, and watch humanity destroy itself. If there was proof of alien intelligence, that alone will send humanity into turmoil because what humans had been taught to believe especially in regards to religion and god will be questioned enough to throw everyone into chaos. And what will be left after all the mess is done? Humanity will be destroyed and maybe what ever humans are left will be worshipping them as gods. Now the aliens can move in without even firing a shot. The monsters are due on Maple Street.

The woman who lives three doors down from me is an illegal alien, and she doesn't wash so I doubt bacterial warfare would work. Any suggestions?



anyway,

crobato said:

To begin with, if we are seriously invaded by aliens...

1. Please don't assume we can shoot the motherships down with AMRAAMs.

There is this part in the movie Independence Day, where a formation of F-18s fired their AMRAAMs directly at the alien mothership. The effect is like shooting toothpicks to an elephant.

Click to expand...

AMRAAMs no chance, but SD-10 would surely do the job! Here's an accurate description of last time earth was invaded by aliens:

Here is more of my plan.

7. Fair Weather is your enemy or How the line is drawn underground and underwater.

If you are United Earth forces facing an alien takeover threat, you will have to assume that anything that is visible in space is going to get attacked sooner or later.

Any airfield I see from space, and you see a lot from Google Earth, gets redecorated with a large PGM aka Precision Guided Meteorite. Most of our conventional air forces are going to get smoked on the ground. Our precious Raptors, Flankers, Lightnings, Typhoons, all going kaboom. We may be able to stop some of the PGMs via our ABM defenses or SAMs with ABM capability, but there are too few of these, and even with numbers, do not present a guarantee.

Our surface navies will rely on the ABM defenses of the latest AEGIS, but there maybe not enough of them and they don't present a guarantee either that they can stop every PGM. The moment a CVF is seen in space or scanned through the clouds using radar, it can be attacked by alien bombers and fighters from motherships orbiting, or simply have PGMs dropped at them from orbit. Surface exposure also means that in fair weather, direct energy weapons and interference systems such as EMP can be directly pointed and applied from space directly to the fleet below.

The thing is, gravity works against us, so its easier to send things down than to send things up. There is an limitless supply of rocks you can find and carve out in outer space and dump them. You would need to attach some boosters on the rocks to control the flight and orbital path of the rocks, but there you go, you have cheap instant missiles. I have to assume that even in advanced civilizations, the universal rule of energy economics still apply.

There are basically two kinds of PGMs to deal with. One is based on an iron based meteor. These can pass through the atmosphere and hit the Earth leaving a large crater. The second type is even more dangerous. These are carboniferous meteors, meaning made of carbon and non ferrous material. As they reenter the atmosphere, they can heat up, forming gas pockets inside them, ultimately exploding into what is a Tunguska sized event. That means they can go off like multiple nuclear bombs at the same time, and yet leave little or no radioactivity.

All this points we have to go underground and underwater. Our most survivable naval assets would be our subs, and we may have to build and service them through underground caves and so on. From our SSBNs, we can launch our nuclear tipped missiles into space directed at the motherships or any orbital platform the aliens use as a base to launch their fighters, bombers and drop PGMs on us. If they are harvesting NEOs (Near Earth Objects), they have to be blown up too. Large meteorites being dropped from space also needs to be intercepted with sub launched missiles.

Sub launched AshMs can be reprogrammed to lets say, hit large targets on the air as long as they are slow enough, as antiship missiles are radar guided. But our Harpoons, Exocets and Ying Jings are not fast enough, we have to go from subsonic to supersonic even at the expense of range. This new missile have to be launched from 533mm torpedo tubes and do so underwater. Eventually we need to convert old submarines or make new ones to a VLS configuration.

Nuclear subs will be faster going to areas around the globe and stay underwater longer, but I will take diesel-eletric submarines to plug their gap.

Supporting these submarines we will need space tracking ships like the Chinese Yuanwangs, although they will be vulnerable from space. So we need to make these ships fast and expendable, deploy them in ways they won't attrac easy attention. These ships can track objects in space, then provide guidance commands to missiles on the air. Space trackers can also be large aircraft, but again, these also have their own vulnerabilities.

One Cold War concept we may have to resurrect is the SSR or the radar picket submarine. There was only one such submarine ever built in the US (or around the world) and that was the USS Triton. At that time it was built, it was the largest sub ever, and it still holds the uniqueness of being the only US sub ever built with twin reactors, which is actually standard on Soviet subs.

Our new SSRs must serve as our space trackers and also act to guide launched missiles against orbital targets.

If we are to survive and carry on the battle, a lot of our naval production would shift underwater. We have to reconsider a whole bunch of Cold War concepts, including submerged aircraft carriers, submarine tankers, replenishment ships and cargo ships. We take a new look at concepts like the Typhoon class, and go even to designs that dwarf even that. For emergency reasons, if I was the Earth Commander, I would take the mothballed Soviet sub fleet and convert them to the uses I mentioned. And remember subs are also important for another reason---recovery of alien spacecraft so we can use to study their technologies. 3/4th of all possible crashes may fall upon the water.

The importance of defending our oceans is not be underestimated. Our oceans cover 3/4th of the Earth's surface, and 3 out of 4 reasons of invading Earth may have something to do with our oceans. Part of UFO phenomenon deals with USOs or Unidentified Submerged Objects. A UFO is a USO when it is sighted underwater and there was one notable SO event near Nova Scotia in 1967 where UFOs enter and leave the water. Some of the phenomenon observed includes large ships underwater, and UFOs being launched from such ships.

In any case, we can expect our battle to be taken underwater. Our SSBNs will be hunted down, while our SSNs and SSKs try to protect them. If the aliens set up underwater bases or have submerged carriers, we have to bring the battle to them. Our subs are going to be dog slow compared to them, but anything that moves fast underwater is not going to be quiet either. Our current torpedoes may be too slow to catch up with an alien ship, so I think the best alternative to arm them would be Shkval type supercavitation, rocket propelled torpedoes that home in the alien ship's wake. Underwater may provide some means to offset our technological disadvantage and here we may begin our final stand.

On land, we would go with underground bases. We should launch fighters through short angled underground runaways, which today something you might only see in Japanese anime. Another is something I picked up from Battlestar Galactica, where you shoot fighters off from a tunnel using a steam catapault.

For landing, fighters either vertically land down ,or go through controlled crashes on short carrier like runaways that can be hydraulically pulled underground or quickly camouflaged.

Our missile forces will depend on camouflaged mobile TELs. There is a ballistic component that will send ICBMs and IRBMs into space, and these are protected by S-300 or PAC style batteries.

(more fun speculation later)

Our modern weapon systems are the result of thousand of years of arms race, where one system was invented to counter another (usually earlier) system. E.g. Bombers -> AAA/SAMs/Interceptors -> Ballistic/Cruise missiles -> Anti-missile defense... and so on. Basically, all our weapons originated from the fundamental purpose of killing/maiming human beings.

It is extremely unlikely that any alien weapon system would have followed a similar development path to ours, unless they have been observing our civilization for some time. Also remember alien biology will be very different from ours.

If we assume that the aliens have just chanced upon the Earth, I think we'll find that their weapons are thoroughly unsuitable against us humans. Of course, our weapons will probably be equally ineffective against them. Ironically, the more technologically advanced the weapon system, the more specialized it becomes, so probably less useful. There is not going to be dogfights with F-18s, or hacking into computer systems.

So both sides may have to start inventing new weapons from scratch.