Unfinished Time by Jay Sandover

Book 1: A Reckoning of Days

Spacetime tunnels, firefighting drones, cutting edge helicopter tech, a map of time. In the near future, the discovery of the exoplanet Triste was a second chance for the people of the dying Earth. It was warm and habitable with plentiful beaches and a deep, beautiful ocean. Colonies thrived. The future was saved. Beneath the feeling of celebration, however, there was another feeling. The planet's first astronaut explorer disappeared. Time worked in strange ways on this planet, everyone felt. It had an uncanny connection with their former home. This inventive, debut novel tells the history and lore of Triste and tells the story of Yoshi and a band of orphans who get caught up in the mystery of the explorer's disappearance.