If you send them away from the sun or otherwise shield them (dark side of a planet, out past Pluto) they’ll be pretty cold and stable. You’d leave them in the rocket of course.
The baseline temperature of outer space, as set by the background radiation from the Big Bang, is 2.7 kelvins (−270 °C; −455 °F). Probably too cold.
The baseline temperature of outer space, as set by the background radiation from the Big Bang, is 2.7 kelvins (−270 °C; −455 °F). Probably too cold.