The Tau Device has the following free download days.
|The Tau Device||B01CC3X9L4||14/05/16||14/05/16|
|The Tau Device||B01CC3X9L4||03/06/16||06/06/16|
It is also available in paperback
As an extra, the paperback editions have appendices. Although not part of the narrative, they elucidate matters such as gravity & acceleration, interstellar culture, and to some degree, the likely aftermath becomes a little clearer.
This book is character driven Science Fiction / Space Opera