Lysopolism and the New World (A History of the World's Ending Book 2)

Having gained the Comet, the crew begin their long solitude and years of deep sleep in cryostasis...but something has gone wrong. On earth far behind them, great war, plague and cataclysm have befallen. The devastation has been unimaginable. It would be impossible to believe before, but something even worse lies before them. How will they ever return??? and what is it exactly could they be returning too???
From the unending night of the abyss of space, dark days are before them. Whatever will they bring???