[quote=@Antarctic Termite]
Fun fact: An object weighing a few tonnes travelling at a couple times the speed of light will hit a planet with explosive force about halfway between that of the Tsar Bomb and the Chicxulub asteroid, on a log scale.
[/quote]

Wat? No. Allow me to explain in Elvish so that BBeast doesn't have to.

For an object of any mass to achieve the speed of light you need to apply an infinite amount of energy. To achieve multiple times the speed of light, we'd need multiple infinities (infinity being henceforth denoted by the variable banana, :nat) of energy.

So this brings us to calculate that the object's Force (F) = mass (We'll round to 6000kg because Jvan is a fat whale of girl) multiplied by acceleration.

Because the asteroid is travelling at a constant speed several times that of light and has no Delta-V, our value for acceleration is 0. Since we started with the claim that this object has infinite energy, we go back around with our circular (and highly waterproof) logic to fill in the variables. :nat = (6000kg)*(0m/s^2).

We now check out answer by dividing :nat by 0. How many zeroes can you fit into a banana? I bet you can fit about 6000 in there, so our answer must be correct.