Proof Mars has about 60,000 tons of Nuclear Weapons on it

Well, yes according to Carl Sagan in a 1988 interview, he said:

"The United States and the Soviet Union have managed to booby trap the planet with about 60,000 tons of nuclear weapons with a little help from Briton, France, China and Israel. A tiny Fraction of those weapons is enough to destroy the participating nations, certainly the global civilization possibly and the human species maybe."
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Was this some disclosure from 1988?

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