Scientists use waves from the electromagnetic spectrum to study the origin of the universe. Which part of the electromagnetic spectrum is used to measure the distance between galaxies and the age of the universe

Working with si (metric) units for each of the following commonly used measurements, indicate its symbol. liter gram milliliter kilogram meter centigram milligram centimeter kilometer second millimeter milliseconds

Can someone me with questions 12 and 13 plz.

Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?