### Clue: For the doctor's travel magazine, a feature penned by Julius (4,7)
### Answer: TIME MACHINE 
 ### Explanation: Definition: For the doctor's travel 
**TIME** (magazine) + **A CHIN** (a feature) "penned by" **ME** (Julius), so **TIME M(A CHIN)E** 
Referring to the Tardis, Doctor Who's time machine