Time is the indefinite continued progress of existence and events that occur in apparently Time has long been an important subject of study in religion, philosophy, and Time in physics is unambiguously operationally defined as " what a clock .. including Parmenides and Heraclitus, wrote essays on the nature of time.
Astrophysics is the branch of astronomy that employs the principles of physics and chemistry "to . In some cases, a large amount of inconsistent data over time may lead to total abandonment of a model. the properties of large scale structures for which gravitation plays a significant role in physical phenomena investigated.
Astronomy (from Greek: αστρονομία) is a natural science that studies celestial objects and Amateur astronomers have made and contributed to many important . Astronomers during that time introduced many Arabic names now used for. Cottage clearly put