Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain and predict natural phenomena.This is in contrast to experimental physics, which uses experimental tools to probe these phenomena.. The advancement of science generally depends on the interplay between experimental studies and …

X-ray astronomy is an observational branch of astronomy which deals with the study of X-ray observation and detection from astronomical objects. X-radiation is absorbed by the Earth's atmosphere, so instruments to detect X-rays must be taken to high altitude by balloons, sounding rockets, and satellites.X-ray astronomy uses a type of space telescope that can see x-ray …