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•  Venus is known as the "Twin Star":  One reason for this ... it is seen in the sky as a "morning star" AND an "evening star" ... ALSO,  Venus makes "2" transits across the Sun

• The Mayan calendar began as a "Birth of Venus" in 3113 BC.  The Maya predicted the Sun's magnetic field would shift direction after 3.740 years.  At those times, the Sun's interaction with the Earth's magnetic field allows excessive radiation (from the Sun) to enter Earth's magnetosphere/atmosphere
  
  
• The Maya predicted that their own civilization would decline after/when the Sun shifted its magnetic field.  From the begining date of the Mayan calendar in 3113 BC + 3740 years = 627 AD.  The Mayan civilization did collapse after that time.
  

• Transits of Venus across the disk of the Sun are among the rarest of planetary alignments & only six such events have occurred since the invention of the telescope
  

• Transits of Venus are only possible during early December and early June when Venus's orbital nodes pass across the Sun.

• If Venus reaches inferior conjunction at this time, a transit will occur... and so far, they occur at intervals of:  8 - 121 ^1/2 - 8 - 105 ^1/2  Years.
  

• After June 6th Venus Transit  of 2012:  The next set of Venus transits occur  on:  Dec. 11th, 2117  & Dec. 08th, 2125.

1. A degree of latitude: roughly 69 miles
2. A minute of latitude: roughly 1.15 miles
3. A second of latitude: roughly 0.02 miles (or just over 100 feet)

1. Degree of Longitude: at Equator:  roughly 69 miles
2. Degree of Longitude: at 45º Latitude:  roughly 49 miles

1. Geomagnetic Storms: disturbances in the geomagnetic field caused by gusts in the solar wind that blows by Earth - [G1-G2-G3-G4-G5]
   
   
2. Solar Radiation Storms: elevated levels of radiation that occur when the numbers of energetic particles increase - [S1-S2-S3-S4-S5]
   
   
3. Radio Blackouts: disturbances of the ionosphere caused by X-ray emissions from the Sun - [R1-R2-R3-R4-R5]
   
   
   DEFINITIONS ARE BELOW
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• A Solar Flare is an explosion on the Sun that happens when energy stored in twisted magnetic fields (usually above sunspots) is suddenly released. Flares produce a burst of radiation across the electromagnetic spectrum, from radio waves to x-rays and gamma-rays