Linguist and Egyptologist Marty Cohen has been pushed out of academia for spurious reasons and now runs a custom furniture store. An old colleague begs him to come to a new dig in Egypt where very curious writing has been found. At the dig, Marty and a few of the team are transported back to pre-dynastic Egypt. But things take an even stranger turn as mythical creatures turn out to exist, at least in this version of the past.
The novel is a serviceable and enjoyable Alternate History adventure, especially if you have some interest in Ancient Egypt history. It never becomes really epic, focusing instead on the dynamics of the small group of time travelers.
Ray Court is part of an experimental programme, in which his mind, and those of the other programme members, will be scanned and sent out to candidate planets in the galaxy. Machines will construct habitats and then copies of Ray and the others, scattering humanity amongst the stars.
The concept of this novelette is simple, but the execution is both clever and thought-provoking. Complicating things, Roy’s ex-wife is also one on the programme, and he believes he may be able to win her back in “another life”. Multiple copies of Roy and the others end up in different circumstances, with different biomes, and their choices are sublty or greatly different. The story rapidly grows from small personal themes to awe-inspiring and humbling ones involving the deep future.
In the sequel to Delta-V, James Tighe and his companions are back on Earth, trying to figure out how to save their two friends still stranded on asteroid Ryugu. A relatively simple problem requiring an increasingly complex plan involving bootstrapping a space economy by building a mass driver on the Moon. The mass driver can launch resources extracted from the Lunar regolith at a fraction of the cost of launching them from Earth, enabling construction of a rescue ship. National and corporate interest on Earth try to get in on the economic and geopolitical frontier, while humanity and Earth suffers increasingly acute social and economic issues due to worsening climate change.
While Delta-V is a more straightforward space thriller, the sequel expands the context, posing important questions such as how to prevent space from becoming just another exploited colonisation boundary for the powerful, while most of humanity remain have-nots. The pace is slower, but the payoff ties it all together. The protagonist as something of a naif in context is a nice detail, illustrating how most people live their lives, even lives doing great things, with little understanding of the bigger picture.