Radio astronomy deals with the study of radiation with wavelengths greater than 1 mm. This is different from other forms of observational astronomy in that the observed radio waves can be treated as waves rather than as discrete photons. Hence, it is relatively easier to measure both the amplitude and phase of radio waves. Journal of Astrophysics and Aerospace Technology publishes complete and reliable source of information on the discoveries and current developments in the mode of original articles, review articles, case reports, short communications etc. Open access articles are essentially peer-reviewed and available for access through the directory of Open Access journal. International Journals supports the system and provides access to 700+ peer-reviewed journals with no restrictions and thus promotes the Open Access movement with a view to promote scientific advancement. The digital peer reviewed journals cover the novel and current scientific studies taking place across universities and research centres in various parts of the world. Each open access journal delivers the latest updates in the respected research area in various formats so that subscribers can access the same through various options.