Space: 1999: Breakaway

Description for SPACE: 1999: BREAKAWAY by E C Tubb:

RUNAWAY MOON!

Moonbase Alpha is Earth's supreme achievement. Self-sufficient and fully computerized, the fantastic lunar colony is Earth's global watchdog, silently guarding against sneak alien attack. The dark side of the moon---once so mysterious, so unattainable---now stores in its womb containers of smoldering radio-active waste, refuse from Earth.

Then, in the year of Our Lord 1999, the serene satellite is ripped apart by thermonuclear explosion. And the 311 inhabitants of Alpha whirl through space on a runaway moon---in an orbit of jarring adventure where survival is a game of chance with the life forces of the universe!

This is #1 in Space: 1999 Series.