Why would a comet explode above the earth?
Sounds a little fishy to me. Like a convenient excuse that cooling and warming are not natural cycles but occur due to outside influences.
Probably exploded when in entered the dense lower atmosphere.
“Why would a comet explode above the earth?”
They are mostly ice...with a bunch of rocks. it gets superheated due to atmospheric friction, some interior ice turns to gas, the gas expands, and it goes kablooey.
Kablooey is a scientific term, and stuff.
Even meteors routinely explode - it’s been actually observed.