Cosmology

✴Cosmology is a branch of astronomy that involves the origin and evolution of the universe, from the Big Bang to today and on into the future. According to NASA, the definition of cosmology is "the scientific study of the large scale properties of the universe as a whole."✴ ►Cosmologists puzzle over exotic concepts like string theory, dark matter and dark energy and whether there is one universe or many (sometimes called the multiverse). While other aspects astronomy deal with individual objects and phenomena or collections of objects, cosmology spans the entire universe from birth to death, with a wealth of mysteries at every stage. ✦ ►This App is aimed at students and readers who want to be able to understand and appreciate the Cosmological Phenomena we observe in the night sky. It will be of great importance to young astronomers, who wish to explore the night sky for finding astronomical objects.✦ 【Topics Covered in this App are Listed Below】 ⇢ What Is Cosmology? Definition & History ⇢ The Expanding Universe ⇢ Cepheid Variables ⇢ Redshift and Recessional Velocity ⇢ Redshift vs. Kinematic Doppler Shift ⇢ Cosmological Metric & Expansion ⇢ Robertson-Walker Metric ⇢ Hubble Parameter & Scale Factor ⇢ Friedmann Equation & World Models ⇢ Fluid Equation ⇢ Matter Dominated Universe ⇢ Radiation Dominated Universe ⇢ Dark Energy ⇢ Spiral Galaxy Rotation Curves ⇢ Velocity Dispersion Measurements of Galaxies ⇢ Hubble & Density Parameter ⇢ Age of Universe ⇢ Angular Diameter Distance ⇢ Luminosity Distance ⇢ Type 1A Supernovae ⇢ Cosmic Microwave Background ⇢ CMB - Temperature at Decoupling ⇢ Anisotropy of CMB Radiation & Cobe ⇢ Modelling the CMB Anisotropies ⇢ Horizon Length at the Surface of Last Scattering ⇢ Extrasolar Planet Detection ⇢ Radial Velocity Method ⇢ Transit Method ⇢ Exoplanet Properties ⇢ Endless Void or Big Crunch: How Will the Universe End? ⇢ What's 96 Percent of the Universe Made Of? Astronomers Don't Know ⇢ Baryons ⇢ Radiation ⇢ Neutrinos ⇢ Newton’s Cosmology ⇢ Rotating Galaxies ⇢ Heisenberg uncertainty principle ⇢ Hubble’s Law ⇢ Lorentz Transformations ⇢ Time Dilation ⇢ Redshift and Scale Factor ⇢ Parallax Distance ⇢ The Principle of Equivalence ⇢ Falling Photons ⇢ Superluminal Photons ⇢ Energy of Gravity Waves ⇢ Cosmic Shear ⇢ Gravitational Waves ⇢ Tensor Field ⇢ Sources of Gravitational Waves ⇢ Gravitational Wave Detection ⇢ Black Holes ⇢ Thermal Death ⇢ What might the dark matter be? ⇢ Baryosynthesis and Antimatter Generation ⇢ The CMB Temperature ⇢ 11 Amazing Facts ⇢ Astronomical distances ⇢ Doppler effect and redshift ⇢ Hubble’s law ⇢ Momentum-Space Density ⇢ Spatial Volume and Density ⇢ Top 10 cosmological discoveries ⇢ Cosmology - Galaxies ⇢ Glossary of Astronomical and Cosmological Terms ⇢ Anti de-Sitter space & Axion ⇢ Cosmological principle ⇢ Degrees of freedom ⇢ Fundamental Forces