Are you lonesome tonight is a favourite song of many of us sung by the singer of all times – Elvis Presley. Surely, however, this song was not devoted to our Sun. For a good reason though. Our Sun has no reason to suffer of isolation and negligence. In fact,
Parsec? Is it the Greek organic parsley? Certainly no. Well, it is most unlikely to have heard the word parsec. Unless, of course, if you are an astronomer either amateur or pro. So, what is all about? It’s a measure of distance; suitable for very long distances indeed. You won’t