I have just been reading up on Sol and came across this page I have not encountered before that has some very grandiose claims that I am yet to verify but thought I'd share some of it with you anyhow.
' One of Sol's most unusual features is its orbit around the center of the galaxy, which is significantly less elliptical ("eccentric") than those of other stars similar in age and type and is only slightly inclined relative to the Galactic plane. This circularity in Sol's orbit prevents it from plunging into the inner Galaxy where life-threatening supernovae are more common. Moreover, the small inclination to the galactic plane prevents abrupt crossings of the plane that would stir up the Sol's Oort Cloud and bombard the Earth with life-threatening comets.
What's more, the Sun is orbiting very close to the "corotation radius" of the galaxy, where the angular speed (raised to 914,000 kilometers or 568,000 miles per hour) of the galaxy's spiral arms (see chart) matches that of the stars within. As a result, Sol avoids crossing the spiral arms too often, which exposes Earth to supernovae that are also more common there
. These exceptional circumstances may have made it more likely for life and human intelligence to emerge on Earth. According to Guillermo Gonzalez (an astronomer at the University of Washington in Seattle), fewer than five percent of all stars in the galaxy enjoy such a life-enhancing galactic orbit. Other astronomers point out, however, that many nearby stars move with Sol in a similar galactic orbit.
In September 2008, a team of astronomers submitted a paper suggesting that the Milky Way's spiral arms have cast the Sun far from its birthplace over time, based on the results of new numerical simulations. As a result, stars near the Solar System vary widely in their chemical composition because a number of them appear to have been perturbed by the galaxy's arms into "wild" or elongated orbits that move them far from their birthplace. However, this perturbation by the spiral arms still preserves the orbital circularity of many stars (including the Sun) around the galactic center (more from Rachel Courtland, New Scientist, September 17, 2008; Rok Rospamkar et al, 2008; and the Rospamkar team's an animation of how the creation and destruction of galactic spiral arms can causes stars to migrate far from their birthplace).'
'In recent millenia, the Sun has been passing through a Local Interstellar Cloud (LIC) that is flowing away from the Scorpius-Centaurus Association
of young stars dominated by extremely hot and bright O and B spectral types, many of which will end their brief lives violently as supernovae. The LIC is itself surrounded by a larger, lower density cavity in the interstellar medium (ISM) called the Local Bubble, that was probably formed by one or more relatively recent supernova explosions. As shown in a 2002 Astronomy Picture of the Day, located just outside the Local Bubble are: high-density molecular clouds such as the Aquila Rift which surrounds some star forming regions; the Gum Nebula, a region of hot ionized hydrogen gas which includes the Vela Supernova Remnant, which is expanding to create fragmented shells of material like the LIC; and the Orion Shell and Orion Association, which includes the Great Orion Nebula, the Trapezium of hot B- and O-type stars, the three belt stars of Orion, and local blue supergiant star Rigel'.
[link to www.solstation.com