Passengers on board what is thought to be the first charter flight to view the Southern Lights have been left awestruck by the display.
The flight took off from Dunedin, New Zealand, on Thursday night, returning early on Friday to the same airport.
Otago Museum Director Dr Ian Griffin led the sold out expedition, which carried 134 people on its unique trip.
Speaking to the BBC, he said the “awesome” flight gave everyone “a spectacular display”.
“Nobody has ever really done that before. This was a world first. People have done it in the northern hemisphere,” he said, stressing that it was not as straightforward to plan as a normal flight.
“The aurora doesn’t just appear in specific locations, it can move around a bit, and we were trying to chase it across the Southern Ocean, which was quite fun.”
Passengers on the Air New Zealand flight, which was deliberately not fully booked so everyone could see out of the windows, were treated to spectacular displays visible to the naked eye.
The Boeing 767 flew through the aurora zone several times, going as far as 66 degrees south, or “two-thirds of the way to the south pole,” in Dr Griffin’s words.
Despite the cost of tickets – NZ$4,000 ($2,800; £2,244) in economy, NZ$8000 in business class – organisers expect to repeat the flight in 2018.
The Aurora Australis is caused by the interaction of solar wind – a stream of charged particles escaping the Sun – and Earth’s magnetic field and atmosphere.