When I was five, I was relatively certain my dad could fly and was living a secret life as an astronaut.

Though he was a mild-mannered Egyptian immigrant who worked as a radiologist by day, around that time he began disappearing more frequently in the evenings and weekends. He claimed to be at the hospital, but on multiple occasions I overheard him tell my mom he was needed at "the satellite." Once I even caught him admitting how difficult it was to be "moonlighting." That's right- MY dad was in charge of illuminating the moon. No wonder he looked so tired in the morning! I searched his briefcase and car diligently for his space gear, but all I found were pamphlets about the hospital's expansion plans.

But that's not all. On Sundays we'd gather with our extended family after church (even space travelers observed a day of rest), and I'd stand behind the living room door to eavesdrop on the adults locked in heated conversation. The words flew by in a blur of English and Arabic, and though I had no idea what a "visa" or "naturalization" was, you'd better believe I understood exactly what it meant when my dad mentioned "aliens." ALIENS!

He didn't exactly fit the profile of an astronaut: he wasn't tall or muscular, he wore thick, horn-rimmed glasses, and had no flight experience aside from Pan Am's JFK-Cairo route. Still, there was no denying the mounting evidence. And clearly there was life on other planets- life with broken bones and herniated discs- because my dad was out there treating it.

I was bursting at the seams to tell someone, anyone, about his forays into other galaxies, but I swore myself to secrecy out of loyalty to his mission. My only communication on the matter took place late at night when I'd sneak out of bed, gaze skyward, and bid him good night.

Every morning, he somehow landed back in the kitchen, standing over the stove, brewing an extra strong cup of Turkish coffee with his typical serene gaze. I would simply nod, too afraid to speak, hoping to silently convey my admiration for his otherworldly exploits.

Eight years ago my dad was diagnosed with Parkinson's Disease, a cruel twist of fate for a man who devoted his life to neurological science. In that time, I've watched his muscles slowly betray him, his movements become involuntary, and gravity imprison him in its grasp. But despite the pain and frustration I know he must feel, he's never once complained, never once questioned "Why me?"

Today, I am 42, and as he looks at me with that same serene gaze from his wheelchair, I'm more certain than ever my dad can fly.