The first humans to travel around the moon in more than 50 years experience hours of scientific wonder — and moments of deep emotion.

The astronauts lost connection with Nasa while behind the Moon, as they passed the furthest point humans have ever travelled from Earth.

President Trump praised the crew of NASA's Artemis II mission in a brief chat late Monday, saying they had "inspired the entire world" after they looped around the moon in a record-breaking voyage.

Besides photographing the scenes with high-powered Nikon cameras, the astronauts also pulled out their iPhones for some impromptu shots.

The moon looks to most amateur photographers like a bright detail on a completely dark background, and it appears to be about half the width if one fingernail on an outstretched hand. That makes it tricky to shoot with an iPhone, as anyone who has ever tried it can attest.

Former NASA astronaut Terry Virts and former NASA chief technologist Les Johnson discuss new developments in the Artemis II mission on ‘The Ingraham Angle.’

Astronauts are flying by the Moon’s far side and setting records. Nature is in Houston with the mission’s scientists.

Astronaut wakeup calls go back to the Apollo years. For instance, the Apollo 10 astronauts had the song "It's Nice to Go Trav'ling" by Frank Sinatra as one of their wakeup calls, and Apollo 15 had the theme song from "2001: A Space Odyssey."