Narlikar, J. V.2012-03-142012-03-141977-02-23http://hdl.handle.net/11007/1504The conformally invariant theory of Hoyle and Narlikar is applied to two astrophysical scenarios. First it is shown how the existence of zero mass surfaces in the four-dimensional manifold in this theory can lead to black holes and white holes. Next it is shown that the so-called anomalous redshifts of QSOs and galaxies can be understood in terms of local shifts in the zero mass surfaces of this theory. Some observable consequences are discussed.enConformal gravityAstrophysical applicationsArticle