The branch of physics which deals with the branch of knowledge of heaven bodies and interaction of matter and energy in space is called Astrophysics? If the man is ever able to control the fusion reaction then he would never face the shortage of energy in the world for ever? Ibn- ul- Haithem is known for his exceptional work in the field of optics? There are hundreds of verses of the Holy- Quran in which Allah urges the believers that they should study nature and act wisely? On the basis of data collected through observations or experimentation we can develop a hypothesis? Laser is the field of atomic physics?