Why Aliens Would Mine Asteroids—Not Enslave Humans for Gold

A friendly, fact-based rebuttal to Zechariah Sitchin’s Anunnaki story

Asteroid Mining

1. Setting the Stage

In 1976, self-taught scholar Zechariah Sitchin published The 12th Planet, launching the idea that a race of extraterrestrials called the Anunnaki genetically engineered early humans to dig up Earth’s gold. The motive, he claimed, was to save the Anunnaki’s distant home world by dispersing that gold into their planet’s atmosphere.

Forty-plus years later the theory still floats around TikTok, YouTube, and late-night radio—but it stumbles over one gigantic 21st-century fact: asteroid mining is a far simpler, safer, and richer way to collect precious metals than forcing a brand-new species to do back-breaking labor on a heavy-gravity world.

Let’s walk through the real science and economics:


2. Gold in Space: A Galactic Free-for-All

  • A single metallic asteroid just 1 kilometer across can hold more platinum-group metals than have ever been mined on Earth. (Mining the sky)
  • NASA’s Psyche mission, launched 13 October 2023, is headed toward 16 Psyche—an asteroid thought to be 60 percent iron and nickel, with traces of gold and platinum worth an estimated \$10,000 quadrillion (that’s a 1 followed by 19 zeros).
  • The asteroid belt, located between Mars and Jupiter, contains millions of these metallic bodies, all drifting in vacuum with essentially zero atmospheric drag.

In short, space is swimming in easy-to-reach metals. Why would any advanced species bother landing on a planet, fighting 9.8 m/s² of gravity, and supervising rebellious primates?


3. Physics 101: Hauling Ore Where Gravity Is Tiny

Earth’s escape velocity—how fast you must go to break free of our planet—is 11.2 km/s. From a typical near-Earth asteroid it’s often < 1 m/s.

If you want to launch one ton of gold off Earth, you need a gigantic rocket and a lot of fuel. If you want to launch that same ton from a small asteroid, you can throw it with the force of a good fastball.

Low gravity equals low cost. Any civilization capable of interstellar travel would recognize that.

Low Gravity = Low Cost

4. Tech We Already Have (and Tech We’re Building)

  1. Prospecting:
    • Tiny “CubeSats” like NEA Scout carry telescopes and spectrometers to identify metal-rich candidates.
    • Commercial start-ups—Astroforge and Asteroid Mining Corporation—have filed dozens of patents on micro-probes that can swarm an asteroid and map its composition.
  2. Excavation:
    • The European Space Agency’s Hera mission will test robotic drills and anchoring harpoons in 2026.
    Autonomous “mole” robots can tunnel without human presence, solving the classic “who holds the shovel?” problem.
  3. Processing and Transport:
    • A solar furnace can melt ore directly in vacuum—no atmosphere means no heat loss.
    Electromagnetic rail guns or rotating tethers could fling sealed metal ingots to pre-set orbits, no rockets required.

If humans in 2024 are prototyping these systems, imagine what a million-year-old species could do.


5. The Economics: It’s a No-Brainer

  • Cost to lift 1 kg from Earth to low orbit: ≈ \$3,000 with today’s SpaceX Falcon 9 rates (and that’s the cheapest option).
  • Cost to lift 1 kg from a small asteroid to low-Earth orbit: estimated at \$30–\$50—almost two orders of magnitude cheaper once the infrastructure is deployed.

Yes, asteroid mining demands an upfront investment, but an advanced civilization likely thinks on geological time scales. Training, feeding, and controlling a population of brand-new hominids for thousands of years? That’s a management nightmare—and a wildly risky business model.


6. What About the Ancient Texts?

Sitchin claimed that Sumerian cuneiform tablets describe the Anunnaki’s gold quest. Modern Assyriologists disagree:

  • The tablets can be read in standard Akkadian and Sumerian; they mention no alien planets, no genetic labs, and no gold shortage.
  • Sitchin’s translations often swap syllables or invent words that don’t exist in Mesopotamian lexicons.

In archaeology, extraordinary claims require extraordinary evidence. No skeletons of alien “foremen,” no laser-cut mines, no hybrid-human DNA patterns have ever turned up.


7. The Science-Fiction Counterpoint

The idea of asteroid mining isn’t new; authors imagined it long before 1976:

  • 1898 – Garrett P. Serviss, Edison’s Conquest of Mars
  • 1952 – Robert A. Heinlein, The Rolling Stones
  • 1963 – Poul Anderson, Tales of the Flying Mountains

Sitchin was actually less imaginative than turn-of-the-century pulp writers. Even the fictional Martians in 1898 skipped planet-based slave labor and went straight for the asteroids.

Asteroid Psyche may have been once the nickel-iron core of a small planet. It’s about as wide as Massachusetts. Credit: Screenshot courtesy of NASA

8. Counter-Rebuttals You Might Hear

“Maybe the Anunnaki needed Earth’s specific isotopic mix of gold.”
• Isotopes of gold are created in supernovae and neutron-star mergers; the mix is uniform across the solar system. An asteroid and Earth gold are chemically identical.

“Couldn’t gravity assist from Earth make shipping easier?”
• Gravity assists don’t change the fact that launching from Earth costs huge fuel. From an asteroid you can hoist the cargo and glide it inward using solar sails.

“Slaves are cheap energy.”
• Not in biology: you must provide food, water, housing, and medical care—or lose productivity. Robots run on sunlight, don’t revolt, and can be shut off at night.


9. Where the Real Evidence Points

  • We’ve already retrieved asteroid samples with JAXA’s Hayabusa2 and NASA’s OSIRIS-REx. Both missions confirmed rich inventories of iron, nickel, cobalt, and precious metals.
  • In 2022 the U.S. government added asteroid mining to its Commercial Space Launch Competitiveness Act, granting companies legal rights over what they collect. Politicians aren’t prone to passing laws about impossible ideas.
  • Global investment firms like Morgan Stanley estimate the space-resource market could hit \$1 trillion annually by 2040. No mention of Anunnaki labor plans in those reports.

10. Big Picture: What Would Aliens Actually Want?

Advanced civilizations likely value data, energy, and survivability far more than physical gold. Precious metals matter for circuitry and catalysts, but those are means to an end: building robust interstellar infrastructure. The fastest route to those metals is—again—low-gravity, high-concentration asteroids.

If ETs ever swing through our neighborhood, they’d probably:

  1. Scan for suitable rocks using telescopes and spectral analysis.
  2. Dispatch autonomous harvesters.
  3. Haul refined ingots home or to an orbital manufacturing hub.

Humans, meanwhile, might not even notice—just as fish in the Pacific rarely notice when a cargo ship passes overhead.


11. Conclusion (TL;DR)

Aliens don’t need human gold miners. The physics is against it, the economics is against it, and the archaeological record is silent on it. In contrast, asteroid mining is easy, efficient, and already on humanity’s near-term roadmap.

So the next time a social-media video pops up claiming we’re the product of an ancient cosmic HR department, remember:

  1. Zero-gravity rocks beat high-gravity planets.
  2. Robots beat reluctant bipeds.
  3. Evidence beats speculation.

And if you still crave a story about aliens digging holes on Earth, pick up a vintage sci-fi paperback—you’ll get better plots and fewer translation errors.


Further Reading

Happy space-prospecting—no pickaxe or alien overlord required.

Science fiction that features asteroid mining before Zechariah Sitchin’s “12th Planet”:

1898: Garrett P. Serviss’s Edison’s Conquest of Mars, which was endorsed by Thomas Edison himself, depicts Martians mining asteroids for gold. This is considered one of the earliest examples of asteroid mining in science fiction.

1932: The pulp era saw the rise of asteroid mining as a popular theme. For instance, Murray Leinster’s short story “Miners in the Sky” appeared in Astounding Stories.

1952: Robert A. Heinlein’s juvenile novel The Rolling Stones (also known as Space Family Stone in 1969) portrays the asteroid belt as a new “Gold Rush” frontier with prospectors seeking radioactive ores.

1953: Isaac Asimov’s Lucky Starr and the Pirates of the Asteroids (written under the pseudonym Paul French) features asteroid mining as a key element of the story.

1963-1965: Poul Anderson’s episodic novel Tales of the Flying Mountains, published in Analog magazine (and later as a fix-up in 1970), traces the development of an asteroid mining culture.

Notes about time travel

The Grandfather Paradox / How Does Time Travel Work? / How to Travel Into the Future / 1. The Waiting Game / 2. Time Dilation / 3. Suspended Animation / 4. Traveling as a Time Tourist / 5. Changing History Through Time Dilation

The Grandfather Paradox

The grandfather paradox raises a troubling question: What would happen if you traveled back in time and killed your grandfather? In that scenario, your grandfather would indeed be dead, just as he would be if you killed him in the present. However, this creates an inconsistency—you would still exist, since you’ve already been born. Essentially, you cannot simply “unborn” yourself. This is a basic question when considering how does time travel work.

How Does Time Travel Work?

To travel back in time, you would need a superluminal vehicle, which is capable of moving faster than the speed of light. To reach your intended destination, you must aim it at specific coordinates in both space and time. It’s important to note that Earth and the solar system are constantly moving at high velocities through the cosmos. Fortunately, superluminal vehicles can match these speeds.

To successfully arrive at your destination without incident, precise timing is essential. As you plan your journey further back in time, the calculations become increasingly complex. To ensure safe arrival, it’s advisable to target the space surrounding Earth rather than the planet itself to avoid collision. Ultimately, you would need to use a smaller ship to land. You would approach Earth from outer space.

How to Travel Into the Future

There are several methods to travel into the future—specifically, five intriguing ways, explaining different aspects of how does time travel work.

1. The Waiting Game

The simplest method is to simply wait. All of us are constantly moving into the future at a steady pace of one second per second. While our mental states can influence how we perceive the passage of time, the rate at which time moves remains consistent for everyone. However, time does flow differently depending on gravitational conditions. For instance, at sea level, time passes more slowly than it does at the top of a mountain, where gravity’s influence is weaker.

2. Time Dilation

Time dilation offers another fascinating approach. If you’re inside a moving object, such as an airplane or a rocket ship, time slows down for you relative to those who remain stationary. If you were to accelerate that rocket ship to the speed of light, time would effectively come to a standstill for the occupants. Upon returning to the launch site after traveling at near-light speed, you would find that everyone left behind has aged significantly. If the journey lasted for many centuries, those back on Earth would have experienced the full passage of that time. Meanwhile, you remained unchanged. This principle is critical in understanding how time travel works in theory.

3. Suspended Animation

Another method involves suspended animation. Our bodies age and progress through time at a constant rate due to our metabolism and the Brownian motion occurring within our cells. By slowing down or halting these processes, one could enter a deep sleep and awaken decades or even centuries later, having aged not a moment.

Returning from Your Past After Time Travel
When it comes to returning to the future after time travel, there are two scenarios to consider, depending on your intentions. One involves traveling as a tourist. The other, aiming to change history.

4. Traveling as a Time Tourist


In this scenario, you commandeer a faster-than-light spacecraft. Direct it toward the approximate position in space where Earth will be after a millennium. Since you can’t perceive where Earth will be in a thousand years—because it hasn’t reached that point yet from your current perspective—you must rely on your knowledge of the timeline. If you traveled to the past using a faster-than-light spacecraft and then returned, you would find that, despite any previous changes, like hypothetically killing your grandfather, the course of history remains remarkably unchanged. Your grandfather would still be alive. You’d walk away with a fascinating story to tell.

5. Changing History Through Time Dilation

5. **Changing History Through Time Dilation**
Conversely, if you choose to travel from your past into the future via the time dilation method—perhaps by orbiting Earth at near-light speed—you would arrive in a timeline drastically altered by your actions. In this case, you might find yourself in a “beta universe” where your grandfather never existed. Consequently, neither would you. While you could observe this altered reality, it doesn’t pose a problem since you hail from a different branch of the multiverse (the “alpha universe”). Thus, even though you have no place in the beta universe, your past experiences in another universe endow you with a unique perspective. It’s a critical aspect when debating how time travel works across different realities.


By understanding and leveraging these methods, the concept of time travel transcends mere science fiction. It invites us to explore the mysteries of our existence and the nature of time itself. This essentially answers the question: how does time travel work?

Can We Have Artificial Gravity In Spacecraft?

Why has nobody built rotating spacecraft to simulate gravity?

Pictured: a fairground ride from the 1950’s, I call it a GRAVITY DRUM.

A whole spacecraft is expensive to rotate, but small spaces on space stations or ships could easily be rotated.

Can those small spaces be big enough to provide meaningful and healthy artificial gravity?

From my physics knowledge I recall that gravity and acceleration are the same.

If I remember correctly, 1 g is equal to an acceleration of 9.81m/sec per second. In other words, a wheel with a circumference of 10 meters would have to be spun about once per second to simulate 1 g in Zero gravity? Not quite.

Alas, it’s a bit more complicated than that, and thankfully we don’t have to spin the wheel quite so fast. That’s a bonus!

Here are a few handy calculators to work out wheel sizes and rotation rates to simulate Earth gravity:

SpinCalc, solves for gravity, radius and rotation rate,

Circle Calculator, solves for diameter, radius and circumference.

A wheel with a circumference of 10 meters would have a diameter of 3.18 meters. This would be a handy size for artificial gravity experiments, even on Earth.

Would it be comfortable to spend any time in this? The wheel should rotate at about 24 RPM to simulate 1 g. It could be compartmentalized in to 1 x 2 meter beds, holding ten crew.

So at least during their rest period spacefarers would have the benefit of normal gravity. The astronauts are lying on the inside of the wheel, a bit like in the fairground ride illustration but with more privacy.

Is it feasible to built such small Drum Gravity units?
How would the human body react? (Artificial Gravity by Centrifuge).

We know that the negative effects of zero gravity are really serious and numerous. Even 2.5 hours of daily treadmill exercise are insufficient to prevent these effects:

  1. fluid redistribution: Bodily fluids shift from the lower extremities toward the head. This precipitates many of the problems described below .
  2. fluid loss: The brain interprets the increase of fluid in the cephalic area as an increase in total fluid volume. In response, it activates excretory mechanisms.
  3. electrolyte imbalances: Changes in fluid distribution lead to imbalances in potassium and sodium and disturb the autonomic regulatory system .
  4. cardiovascular changes: An increase of fluid in the thoracic area leads initially to increases in left ventricular volume and cardiac output. As the body seeks a new equilibrium, fluid is excreted, the left ventricle shrinks and cardiac output decreases.
  5. red blood cell loss: Blood samples taken before and after American and Soviet flights have indicated a loss of as much as 0.5 liters of red blood cells.
  6. muscle damage: Muscles atrophy from lack of use. Contractile proteins are lost and tissue shrinks. Muscle loss may be accompanied by a change in muscle type.
  7. bone damage: Because the mechanical demands on bones are greatly reduced in micro gravity, bones essentially dissolve.
  8. hypercalcemia: Fluid loss and bone demineralization conspire to increase the concentration of calcium in the blood.
  9. immune system changes: Loss of T-cell function may hamper the body’s resistance to cancer — a danger exacerbated by the high-radiation environment of space .
  10. interference with medical procedures: Bacterial cell membranes become thicker and less permeable, reducing the effectiveness of antibiotics.
  11. vertigo and spatial disorientation: Without a stable gravitational reference, crew members experience arbitrary and unexpected changes in their sense of verticality.
  12. space adaptation syndrome: About half of all astronauts and cosmonauts are afflicted. Symptoms include nausea, vomiting, anorexia, headache, malaise, drowsiness, lethargy, pallor and sweating.
  13. loss of exercise capacity: This may be due to decreased motivation as well as physiological changes.
  14. degraded sense of smell and taste: The increase of fluids in the head causes stuffiness similar to a head cold.
  15. weight loss: Fluid loss, lack of exercise and diminished appetite result in weight loss. Space travelers tend not to eat enough.
  16. flatulence: Digestive gas cannot “rise” toward the mouth and is more likely to pass through the other end of the digestive tract “very effectively with great volume and frequency” .
  17. facial distortion: The face becomes puffy and expressions become difficult to read, especially when viewed sideways or upside down.
  18. changes in posture and stature: The neutral body posture approaches the fetal position. The spine tends to lengthen.
  19. changes in coordination: Earth-normal coordination unconsciously compensates for self-weight. In weightlessness there is a tendency to reach too “high” .

Compared to these adverse effects of zero gravity, here are some studies by a psychologist named Graybiel from 1977 on the effects of rotating a human on his own axis here on Earth, like on a spit (from https://psycnet.apa.org/record/1980-22567-001).

GRAYBIEL ROTATION COMFORT ZONES

Graybiel concluded that 
1.0 RPM: even highly susceptible subjects were symptom-free, or nearly so
3.0 RPM: subjects experienced symptoms 
5.4 RPM, only subjects with low susceptibility performed well
10 RPM, adaptation presented a challenging but interesting problem. Even pilots without a history of air sickness did not fully adapt in a period of twelve days.

The “adaption” that Graybiel is talking about is the getting used to the absence of the rotation, after the body had been spun.

What that feels like we all remember from childhood.:

Pirouette

I must say that spit rotating a human on his own axis in the horizontal under the influence of Earth gravity is most likely to be very far removed from what a human may experience in an artificial gravity drum in weightless space.

I’d go as far as to say that Graybiel’s rotation comfort zones have absolutely nothing to do whatsoever with artificial gravity by centripetal force. All he proved in his paper “Somatosensory motion after-effect following earth-horizontal rotation about the Z-axis” is that the after effect of spinning someone rapidly is disorientation of the vestibular system of the ear, leading to dizziness, aka vertigo.

But let’s see if these Graybiel’s comfort zone figures can be applied.
The SpaceX Mars rocket is going to have a diameter of 9 meters. Would it be possible to create a comfortable habitat for sleeping or resting spacefarers within the confines of this rocket?

A 9 meter drum would need to rotate at 14 RPM to simulate 1 g, or at 8 RPM to achieve 1/3 of Earth gravity. Graybiel’s findings would indicate that the space available on the SpaceX Mars rocket would be too small.

However, I believe that the gravity (centripetal force) acting on the body as it lies down, not spinning about itself and on one level , will be more comfortable than twirling rapidly around one’s own axis.

In Drum Gravity Bed Units there would be no head-to-foot acceleration gradient.

DRUM GRAVITY BED UNITS
The drum gravity bed units are conceived of as an add-on module to a spacecraft or space station, be it in transit, orbit or on the Moon, Mars or asteroids to provide more natural gravity.

Have prototypes of this concept been built?

In a certain way: Yes! The first picture in this post is a fairground attraction from the 1950’s.

Did humanity really forget from the ’50s how easy and fun it is to enjoy artificial gravity? Apparently the fairground visitors subjected themselves to the experience voluntarily and enjoyed it.

“Rotor Ride”

Simple gravity devices like this could help spacefarers to maintain their health, after the device is tweaked.

A BIGGER MODEL

Rotating wheel space station — Wikipedia

Here are the calculations on the von Braun wheel from 1952 used in the movie 2001: A Space Odyssey:

They envisioned a rotating wheel with a diameter of 76 meters (250 feet). The 3-deck wheel would revolve at 3 RPM to provide artificial one-third gravity. It was envisaged as having a crew of 80.

Fast forward 70 years (not much has happened since the 1950’s):

SAHC HUMAN CENTRIFUGE
The SAHC human centrifuge began testing and operations in about 2020. It’s to investigate the tolerability and use of artificial gravity on astronauts and their health, to counter the effects of weightlessness. What’s taken so long?

The machine measures 5.6 meters in diameter. 
It would be small enough to put in the SpaceX Mars rocket. But it needs a few more seats.

https://www.dlr.de/me/en/desktopdefault.aspx/tabid-1961/2779_read-14523/

Centrifuge with lying test person

With the Short-Arm Human Centrifuge (SAHC) in Cologne — provided by the ESA — artificial gravity will be created to afford fundamental research in medicine and human physiology. The main focus is on the possibility to extend e.g. bed-rest studies to test methods of artificial gravity based counter-measures for medical risks due to weightlessness.

Technical data:

Max. radius at outer perimeter: 2,8 m
Max. overall payload: 550 kg

Max. centrifugal acceleration
(foot level, test subject height 185 cm): 4.5 g
Max. revolution of centrifuge rotor
(software limit): 39 rpm

Scientific applications

  • Development of effective countermeasures for neuromuscular and skeletal degeneration of astronauts using Artificial Gravity, etc…

This is an article by Erich Habich-Traut for the Contact Project,
https://contactproject.org

Previous | Next