1.Our Moon's creation from a Great Impact 4.50-4.52 Billion years ago.
reference 1, 2003 Canup reference, (Intra vs Extra Solar System Source ?) , Computer Animation of Impact Event)

AND its possible merger/collision with a Second Moon about 4 Billion Years Ago. Related to the Late Heavy Bombardment ?

2. Impact Event 3.8 Billion years ago,

4. Impact Events 3.47, 3.26, 3.24, 2.63 , 2.56 , 2.48, 2.023 Ga (Vredefort) and 1.85 Ga (Sudbury)

4. 4 Major Glaciation Periods during the Past 1 Billion Years. Some may be related to Impacts.

5 .The Alamo impact 370 million years ago - as factors to the Devonian double extinction

6. Impact Located at Bedout Dome off the Northwest coast of Australia.251 Million Years ago, WIMP Clump passing , and Volcanism- Associated with the Great Dying/Permian-Triassic Boundary Double Extinction Event

7. Impact Event 65 million years ago (the Cretaciuous-Tertiary boundary event associated with the extinction of Dinosaurs ) and located at Chicxulub Crater in the Yucatan Peninsula of Mexico.

8. Impact Events 10 Million Years ago in Argentina and other places possibly associated with the end of the Age of the great apes.

9. Impact event 3.3 Million years ago associated with regional extinctions in Argentina.

10. Multiple Pleistocene Heat Pulse Events followed by Cooling in Greenland Ice Cores between 40K years ago and 11500 years go.. (Similar to the Younger Dryas Event and possibly related to similar cometary impacts).

11. Atmospheric Impact Event with a 3 Mile Wide Comet X 12,900 years ago on the Laurentide Ice Sheet in the Great Lakes Region of North America.

• Seen in Advance by People All over the world-?Noah
• Caused the 1000 year Younger Dryas Cold Spell
• Caused Megafauna /Ice Age Mammal Extinctions
• Caused South Carolina Bay Formations that point to the direction of ground Zero
• Caused Clovis Culture Population Reduction and Fragmentation
• Responsible for Earthquakes in non Tectonic Areas of North America
• Created Large Fresh Water Ice Melt Flows into the Atlantic Ocean
• Caused Tidal Waves in the Atlantic Coastline and onto the Straits of Gibraltar
• Changed Ocean Salinity and Circulation
• Caused World Wide Climate Change Events.
• Caused Widespread Wildfires
• Perhaps responsible for historical human fear of comets
• May be responsible for The Great Flood as reported in the Bible
• May have Created Black Sea Major Flooding Event
• May be represented in North American Indian Rock Art Drawings
• Possibly responsible for human fair skin tone mutation event and natural selection
• May have delivered new viruses to Earth
• May have triggered migration of Curiosity Seekers (New immigrants to North America- such as Mitochondrial Haplogroup X2)
• Pieces of a larger Pre-Comet X may have impacted prior, during , and/or after the Comet X piece.
• May have been part of a cometary shower that occured after pertubation of the Oort Cloud by a blast wave from the nearby Geminga Supernova Explosion..
• reference: livescience

12. Cataclysms in the late 3rd Millennium BC (2100-2400 BC),

13. "Smaller" Tunguska Impact Event over Siberia in 1908 causing 800 square miles of forest to flatten

14. Impact off New Zealand coast 500 yrs ago

15. Other Recently Observed Smaller Impact Events