Periods of Mass Extinctions Are About 250 Million Years Relate To The Structure of The Milky Way Galaxy

15 mass extinctions were known below:

 

1) Dresbachian extinction events (which did not be recorded by Sepkoski JJ ) were from 502 Mys ago.~90%

 

2) Ordovician–Silurian extinction events were from 450–440 Mys ago.~49%

 

3) Lau event was from 424 Mys ago.~23%

4) Kacák Event (Eifelian) was from 390 Mys ago.~24%

 

5) Taghanic event was from 384 Mys ago.~30%

 

6) The late Devonian extinction was from 375 to 360 Mys ago.  ~35%

 

7) Hangenberg event was from 359 Mys ago.~28%

 

8) Serpukhovian extinction event was from 330 to 325 Mys ago.~23%

 

9) End-Guadaluoian (Capitanian) 260 Mys ago. ~47%

 

10) Permian–Triassic extinction event was 252 Mys ago.~58%

11)Triassic–Jurassic extinction event was from 201.3 Mys ago. ~37%

 

12) Pliensbachian- Toarcian was from 186 Mys ago. ~14%

 

13) Tithonian event was from 145 Mys ago.~18%

 

14) “Aptian extinction” (which did not be recorded by Sepkoski JJ ) was from 113 to 117 Mys ago.

 

15) The Cretaceous–Paleogene extinction event was from 66 Mys ago.~39%

In 15 mass extinctions, there were 11 mass extinctions (11/15 and over 70% mass extinctions) that have a rule of the period of 250 million years with periodic structures in both the solar system and the milky way galaxy which relate to mass extinction. The twelfth is Sixth Mass Extinction now.

The solar system includes a dark solar system with the dark sun of dark matter and dark energy.

The galaxy also has a dark galaxy.

A structural resonance between them would radiate more special radiations such as dark black body radiations to hurt lives by breaking the spacetime structure of life including polar molecules and atoms, and also would change the orbit both of the asteroid belt and (dark) comet cloud, and would cause them to rain on the orbit of the earth during each big mass extinction.

In 2011, first reported in the world, a period of mass extinctions is 250 million years.

See Dayong Cao, “The mass, energy, space and time systemic theory-MEST-the author's new idea about the comet be authenticated”

https://meetings.aps.org/Meeting/APR11/Session/K1.17

“New Experimental Phenomena That The Photo-Voltages Be Remotely Changed At Same Rate”

 

https://meetings.aps.org/Meeting/APR21/Session/B11.6

 

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