What will happen if a needle collides with the Earth at the speed of light?
I wanted to see how much damage it would cause, so I did some research.
Suppose the needle is made only of iron, weighs 1 gram, and travels at the speed of light.
When it collides with Earth, its kinetic energy will be 2.19 × 10^2 billion joules, equivalent to three Tsar bombs, the largest nuclear weapons ever detonated.
The needle will undoubtedly create a hole on Earth, smaller than an asteroid due to its size but still significant enough to cause harm.
It will likely produce a huge fireball, smaller than a bomb but with a greater impact.
However, this is a highly theoretical matter, as nothing can travel at the speed of light, so there’s no need to worry.
