Does the Galaxy affect Life on Earth? The Solar System

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Does the Galaxy affect Life on Earth?The Solar
Systems motion in the Galactic Tidal Field

• presented by Steve Wickson

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Suns Orbit in the Galaxy (F.Bash, 1986)
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The suns orbit in the galaxy in the R, ? and
R,z planes.
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The Solar Systems Orientation in the
Galaxy North Galactic Pole is at RA 12h51m, d
277.7 (192.85948, 27.12825) North Ecliptic
Pole is 23.43928 south of d 90 in the
direction of the winter solstice RA 18h (270,
66.56072), epoch 2000 Transform NGP into
ecliptic coordinates using everybodys favourite
spherical trigonometry formulas cos ß cos ?
cos d cos a cos ß sin ? cosd sin a cos e sin
d sin e sin ß sin d cos e - cos d sin a sin
e ß arcsinsin 27.12825cos 23.43928-cos
27.12825sin 192.85948sin 23.43928
29.81144, 150.18856 i, the angle of
inclination between ecliptic and galactic plane
is 90 - 29.81144 60.2
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Gravitational Potential of Milky Way (Hocevar,
2006)
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Conversion of units
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Bulge, Disk, and Halo Components
Galactic Gravitational Field
The Potential of our Galaxy
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Gravitational Field of Galaxy
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Does the Galaxy affect Life on Earth? You decide
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Temperature of Earths orbit (Zeilik Gregory,
1998)
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Circular Velocity Curve of Milky Way Galaxy
(C.Flynn, J.Sommer-Larsen, P.R.Christensen,
1996)