If the stars in the Galactic disk were orbiting the Galactic center in circular Keplerian orbits, the rotation velocity of the disk would fall as the inverses square root of the distance from the Galactic center. A planet's orbital period increases proportionally with the orbital semimajor axis to the 3/2 power. The shear is greatest if the stars obey Kepler's laws, like the planets orbiting the Sun. This form of rotation gives a shear to the stellar fluid. Analogy to other astrophysical disks, such as accretion disks around neutron stars and the planets orbiting the Sun, suggests that the Milky Way's disk is differentially rotating, with the inner regions completing a rotating in less time than the outer regions. Within the stellar fluid the rotation of the disk appears as a vorticity, a property that describes the rotations within a fluid. The very form of the galactic disks in other galaxies suggests that the Milky Way's disk is rotating around the Galactic center. How this fluid moves as it flows in a disk around the Galactic center tells us something about how the gravitational field and the mass generating the field are distributed within the Galaxy.
The fluid itself moves in swirls, shears, and divergences with a velocity that is an average of the velocities of its stellar atoms. As with molecules in a gas, the stars in this fluid have random thermal motions that they acquire over billions of years of numerous weak encounters among themselves. The Sun and its neighboring stars, lying in the Galactic disk, constitute a stellar fluid orbiting the Galactic center. Surf Soap Co.Milky Way Galaxy The Local Motion of the Galaxy
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is on a mission to keep our surf clean by providing surfers & water lovers professional hair & skin care products they can trust, whether on the road, at the beach, or in their homes.
Currently, Down To Earth Kailua is stocking Rehab Balm - Restorative Hair Conditioner, All-In-One Shampoo+Conditioner+Body Wash bars, and Better Butter - Healing Skin Balms in 3 tropical flavors. boasts hair and skin care products that are locally handmade with organic and sustainable ingredients. “ Our mission: To perpetuate the Hawaiian surf/island lifestyle, share the warmth of the aloha with our customers, and advance the surf apparel industry in Hawaii with superior customer service and commitment. They strive to keep the cultural basis of the aloha spirit, which is why they’re proud to be an exclusive partner with Surf Soap to generate more awareness about ocean safety in personal care products, keeping our “wai” clean, as our ancestors would have appreciated. Since the opening of its doors, Local Motion has been devoted to supplying the best, authentic surf wear on the islands.
Local Motion has been running for 40 years, starting with its founder, Hawaiian Native Robert Burns. (Hawaii, May 2021) – Surf Soap Company has announced its exclusive partnership with Local Motion.