It is probably the most rapidly evolving field of science today, and this is due to the advancements of technology, such as satellites, space probes and telescopes. What is true in astronomy today will most likely be wrong in 20 years time. We will discuss about the night sky and the constellations, the complex moves of the Earth and the beautiful aurora. In general there are three theoretical main fields of interest here: 1. Our solar system, 2. Stars and Galaxies 3.Cosmology , and one observational: Observational Astronomy. Feel free to post questions of any kind such as: Is the Universe Infinite? or specific homework questions which require mathematical calculation i.e calculation of distances, temperatures, magnitudes, and even more advanced theoretical cosmology questions i.e models of inflation. Happy posting and reading!