PLEASE HELP FAST CORRECT ANSWERS ONLY Have any comets or asteroids collided with Earth? List at least five impacts.

4.5 billion years ago :

A solar nebula condenses to form the planets, moons, asteroids, and comets of our solar system. The planets’ gravity propels comets outward to form the distant Oort cloud and funnels most asteroids into a belt between Mars and Jupiter .  

3.8 billion years ago :

The Late Heavy Bombardment: many massive impacts from debris left over after planet building, batter the Earth and Moon, and the inner planets, Mercury, Venus, and Mars. The impacts are large enough to keep much of their surfaces molten .

65 million years ago :

An object – probably an asteroid about 10 kilometres across – crashes into what is now Mexico’s Yucatan peninsula, forming a 300-km-wide crater called Chixculub. The resulting global hail of red-hot impact debris sets fires everywhere. The soot and dust of the impact and fires create an “impact winter” lasting for many years, leading to the death of all dinosaurs and many other forms of life.

50,000 years ago :

A 50-metre-wide, nickel-iron meteorite slams into what is now Arizona, forming Meteor Crater – Earth’s best-preserved large impact crater, 4 km across .

613 BC:

China’s Annals record a great comet, now thought to have been the first known sighting of Halley’s Comet and perhaps the earliest record of any comet .

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