New Delhi, Sept. 8 -- NASA's acting administrator Sean Duffy likened the iPhone to the space economy and the US' moon mission. Duffy said in a recent podcast with the space agency, "...it's kind of like the iPhone at the start of the iPhone..."

Duffy explained that no one could have envisioned years ago how the iPhone, today, would change one's life. Likewise, no one could have foreseen 20 years ago the US's upcoming moon mission and what happened in low Earth orbit.

In the September 5 episode of 'Houston We Have a Podcast', Duffy said: "...15, 20 years ago, no one could have envisioned the kind of economy that you would have in space, with the space economy..."

"It's kind of like the iPhone at the start of the iPhone, like, no one und...