The title chapter seven argues that one of the dogmas from twentieth century physics that it is not possible to travel faster than the speed of light is in fact wrong. This provides an exciting possibility in the 21st century and beyond a new cosmological outlook where humanity can reach to the stars! Previously published papers presented to the Russian Academy of Sciences are accompanied by other unpublished papers. An attempt is made to explain dark energy arising from tachyonic gravity which may also explain the expanding cosmos. The contribution of deceased American physicist G.Feinberg is presented although the author obtained his derivation of tachyonic physics independently and by a more fundamental space-time derivation. Much of the book is accessible by undergraduates in mathematics or physics or a general reader interested in broadening his or her mind. This is a seminal work by an original founder of the subject.