Solar winds and steel chains are a difficult way to rescue a creature the size of a planet from the grip of a black hole. When the creatures in difficulty are something neither Susan or Cet have seen before, staying uninvolved is not an option. Gravity and relativity are not the only problems they face: there’s also getting the would-be rescuers to work together.
A science-fiction novella.
The Killgrace series: Two scientists, one purely alien, one advanced humanoid, trapped on Earth in the past. Their only way home is the long way, living it straight without disturbing events too much, but the world they came from was at war – and they weren’t on the same side.