Labels:text | screenshot | universe | space | astronomy | outer space | astronomical object OCR: WHAT IS COSMOLOGY? COSMOLOGY IS the branch of of the known Universe. Two well-known astronomy that deals with the models are the Steady-State universe origin, large-scale structure, and (in which new matter is continuously evolution of the Universe. Astronomers created in order to maintain a constant construct imaginary "model universes" density) and the Big-Bang model (in using mathematics, and compare the which the Universe is expanding from properties of these models with those a single explosion). THE GREAT UNKNOWN Humankind has long gazed in wonder at the night sky and tried to find a meaning in it. SEE HISTORY OF NEXT ALSO COSMOLOGY
