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| Dimension Tide in space in Godzilla vs Megaguirus (2000) |
The Dimension Tide is the weapon designed to eliminate Godzilla in Godzilla vs. Megaguirus. In a previous post, we analyzed the weapon and Godzilla’s atomic breath, concluding that the phenomenon shown in the film is unlikely to be a real black hole. Instead, it behaves more like a gravitational sphere with extremely high mass.
In this post, we will attempt to estimate the weapon’s destructive yield based on the available information.
Weapon Yield
We know that the gravity sphere (the pseudo–black hole projectile) has a mass of 3.66 × 10¹² kg, or about 3.6 billion tons. This projectile is launched from orbit toward Earth at very high speed.
However, the official information presents a contradiction. According to the guide, the satellite is positioned at 35,000 feet (10.6 km) in altitude. At the same time, the same guide claims the satellite is in geostationary orbit, which would actually place it at about 35,000 km above Earth. This also contradicts the film itself, where the satellite is clearly shown thousands of kilometers above Japan.
Because of this inconsistency, I will provide two estimates: one based on the guide’s stated altitude and another based on what is visually suggested in the film.
To estimate the impact energy, we will use the kinetic energy (KE) equation.
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| Dimension Tide in space over Japan in Godzilla vs Megaguirus (2000) |
Low-Altitude Launch Scenario (Guide Statement)
Based on the cinematic timing shown in the film, the projectile takes 26 seconds from the moment of firing to impact.
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| Godzilla vs. Megaguirus Super Complete Works, Shogakukan, p.17 人工衛星に搭載され、地上3万5千フィートの静止軌道からゴジラを狙う Installed on an artificial satellite, it targets Godzilla from a stationary orbit 35,000 feet above the Earth's surface. |
Velocity:
V = 10,668 / 26 ≈ 410 m/s
Using this value, we can determine the kinetic energy:
This corresponds to approximately 71 megatons of TNT.
This represents an extremely powerful kinetic impact, yet it still fits within the destructive scale commonly portrayed in the Millennium-era films.
Now, let’s move to the second estimate, based on the altitude implied by the film’s visuals.
Orbital Launch Scenario (Film-Based Scaling)
For the second estimate, we rely on the visuals presented in the film itself. Using the scale provided by Google Earth, the satellite appears to be roughly 3,820 km above Earth.
Using this height, we can estimate the projectile’s velocity:
Now we calculate the kinetic energy:
This is equivalent to roughly 9.4 million megatons of TNT, comparable to the impact energy of a multi-kilometer asteroid striking Earth, an event capable of causing planetary-scale extinction.
In my view, this estimate carries greater validity because it is derived directly from the film’s visuals, whereas guidebooks can sometimes contain printing errors or inconsistent data.
Conclusion.
Whether using the conservative guide-based estimate or the film-based orbital scaling, the Dimension Tide delivers an impact ranging from tens of megatons to asteroid-level energy. Despite this, Godzilla survives the attack, demonstrating extraordinary durability even by kaiju standards.
This feat reinforces the Millennium Godzilla’s resilience, showing that he can withstand forces comparable to massive kinetic impacts — placing his durability far beyond conventional military weaponry and firmly within extreme, disaster-level destructive scales.
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