intersidereal
adjEtymology From inter- + sidereal.
1
Between or among constellations or stars; interstellar.
- — OK.... now, if the traveller comes back to Earth, he will have aged eight minutes when his children would be eight years older! — Exactly... That's why all intersidereal explorers who have reached the fifth level of consciousness never come back[…]2015, Laurent Pommès, The Next Step of Humanity: