One of the most memorable movies in the Godzilla franchise is Final Wars, where we witnessed multiple kaiju battles and Godzilla taking on every single opponent in his path. But among all those epic moments, one scene truly stands out — the moment when Godzilla fires his Atomic Breath at the asteroid carrying Monster X while it’s still in space.
The blast completely obliterates the asteroid, the shockwave wipes out the entire city of Tokyo, and yet Godzilla stands tall at the center of the massive crater — completely unharmed. A perfect display of his raw power and near-invincible durability.
But that raises the big question: just how powerful was that impact?
Let’s break it down and make a reasonable scientific estimate.
Calculating the Impact
To solve this, we need to identify two key factors: the asteroid’s velocity and its mass. Once we have those, we can apply the kinetic energy formula to calculate the total energy in Joules — and from there, estimate Godzilla’s durability.
The first step is to determine the velocity.
We start by finding the distance traveled. For this, I used a screenshot from the scene showing the asteroid appears above Japan and overlaying it onto the Earth map, I was able to establish a reasonable estimate of its altitude., and then compared it with Google Earth’s measurement tools. to get a nearly accurate distance estimate.
As shown in the image, the asteroid’s altitude is roughly 2528 kilometers, and it covers that distance in about 3 seconds (based on cinematic timing). That means the asteroid’s velocity at the moment of impact with Godzilla was approximately 842 km/s, or about Mach 2,456 — or 2,456 times the speed of sound.
The next step is to determine the asteroid’s mass — a tricky point because there’s no reliable scale in the shot and the size shown by the Xiliens is clearly inaccurate. A plausible but still conservative approach is to use Monster X’s mass, since he was a passenger on the asteroid. Using 60,000 tonnes as our estimate feels reasonable for this purpose. (For clarity: 60,000 tonnes = 60,000,000 kg.)
The final step is to determine the total energy using the kinetic energy formula:
That’s equivalent to about 5,083 megatons of TNT — an absolutely colossal amount of energy, roughly 100 times more powerful than the Tsar Bomba, the largest nuclear device ever detonated on Earth.
In other words, Godzilla casually tanked an impact that would make the most destructive weapon in human history look like a firecracker.
Godzilla’s durability in Final Wars reaches absurd levels of power — surviving an asteroid impact equivalent to 5,000 megatons of TNT, a force nearly 100 times stronger than the Tsar Bomba. This feat pushes him beyond biological limits, placing Godzilla among the most powerful fictional beings ever imagined. In short, he didn’t just survive an extinction-level event — he walked it off.
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