International Astronomy and Astrophysics Research Journal

With reference to Stoney scale, Wien’s displacement law and considering a light speed rotating black hole universe, in this letter, an attempt is made to estimate cosmic expansion rate, galactic dark matter, galactic flat rotation speeds and galactic radii. It can be appealed that, as ‘spin’ is a basic property of quantum mechanics, from the subject point of quantum gravity, universe must have ‘rotation’. If it is assumed that, universe is a ‘growing black hole’, it is quite natural to expect ‘cosmic rotation’. Based on the proposed assumptions, cosmic radius seems to be shortened by a factor of 148 and cosmic age seems to be shortened by a factor of 147. Independent of the galactic redshift data and its controversial analysis and by continuously measuring the rate of decrease in current cosmic temperature, future cosmic expansion rate can be understood confidently.