| Answer | Crossword Clue |
|---|---|
| outbacks | Any remote or sparsely populated region |
| outback | Any remote or sparsely populated region |
| backwoods | A remote or sparsely inhabited region, esp. one considered backward |
| backblocks | (Australian) remote, sparsely populated country |
| backblock | (Australian) of the backblocks, remote, sparsely populated country |
| halo | region of space surrounding a galaxy that is sparsely populated with luminous objects (as globular clusters) but is believed to contain a great deal of dark matter |
| haloes | region of space surrounding a galaxy that is sparsely populated with luminous objects (as globular clusters) but is believed to contain a great deal of dark matter |
