Age Estimates of Universe: from Globular Clusters to Cosmological Models
  and Probes
  We performed the photometric analysis of M2 and M92 globular clusters in g
and r bands of SLOAN photometric system. We transformed these g and r bands
into BV bands of Johnson-Cousins photometric system and built the color
magnitude diagram (CMD). We estimated the age, and metallicity of both the
clusters, by fitting Padova isochrones of different age and metallicities onto
the CMD. We studied Einstein and de Sitter model, bench mark model, the
cosmological parameters by WMAP and Planck surveys. Finally, we compared
estimated age of globular clusters to the ages from the cosmological models and
cosmological parameters values of WMAP and Planck surveys.
