House Arrest, Generally at Night-Time
This page is the CodyCross answer for the clue below from Space Exploration, Group 920, Puzzle 1 (Hydrogen and Helium).
Question is: House Arrest, Generally at Night-Time
and the answer is: CURFEW
Word Meaning:
CURFEW — Any regulation requiring people to be off the streets and in their homes by a certain time.
Definitions from Wiktionary.