GENERAL KNOWLEDGE

Detailed explanation-1: -Galaxies, like the pennies, don’t expand, rather it’s the space between the pennies that’s expanding. Objects held together by gravity or other forces, including individual galaxies, individual stars and planets, and even ourselves, are not expanding.

Detailed explanation-2: -The new study confirms previous expansion rate estimates based on Hubble observations, showing an expansion of roughly 45 miles (73 kilometers) per megaparsec. (A megaparsec is a measurement of distance equal to one million parsecs, or 3.26 million light-years.)