Answer: DEEPSPACE
The answer DEEPSPACE has 20 possible clues. See the results below.
Possible Clues:
- Probe's destination
- Energy to limit velocity when rocketing in void
- 59 Across source, perhaps
- Immeasurable regions of the universe
- Intense school march is out of this world
- 'Star Trek' venue
- Region beyond our atmosphere
- Distant regions of the universe
- It's far out
- Getting back energy, limit rate of travel somewhere far from home