How big is the biggest meteor that ever hit earth? How hard was the impact?

Question

How big is the biggest meteor that ever hit earth?   How hard was the impact?

Nova Adams · Accepted Answer

About #15# kiolmeters on the Yucatan Peninsula in Mexico near the town of Chicxulub almost #65# million years ago.

The biggest meteor to ever hit earth is believed to be the one that hit the Earth almost #65# million years ago on the Yucatan Peninsula in Mexico near the town of Chicxulub and left behind a crater more than #180# kilometers in diameter and #20# kilometers in depth. The meteor is estimated to be of diameter of #15# kilometres and delivering an estimated energy of 10 billion Hiroshima A-bombs. The impact would have caused a tsunami of a few kiolmetres. The emission of dust and particles could have covered the entire surface of the Earth for several years, possibly a decade, creating a harsh environment for living things. Many scientists believe that the meteorite that left this crater caused or contributed to the extinction of the dinosaurs.

Levi Anderson · Answer

undefined The Hoba meteorite, which fell in Namibia and is thought to have weighed about 60 tons and measured roughly 2.7 meters in length, is the largest meteorite to have struck Earth. The impact would have been tremendous, though precise information regarding the force is unknown.