'Cosmic frontier', as the name suggests, this book has 3 aspects which both are somehow related. It shows rise of time (power of time). 'Time', 'Time travel' and 'Life on Mars'. All of 3 are related as they all have significance of time, but how? This how's answer would be given in this book itself. Will we be able to settle ourselves on mars, what is time and is time travel possible? Time travel has many aspects- Interrelations, Time slip, Time travellers, Dimensions and much more are covered in the book itself. To gain knowledge about travelling in time and settling on mars, even if you wish to invent time travel or desire to go on mars and make it a suitable planet, do go through this book ones!