(CNN) – Experimentally, this would be a spectacular time: 19 hours, 17,800 kilometers, 100 tons of jet fuel and not one, but two separate sunrises.
The Australian airline Qantas launched a unique research flight on Thursday, carrying around 50 nonstop people from London to Sydney, representing the longest commercial passenger flight in recent aviation history.
The departing flight Heathrow Airport is part of Qantas' Project Sunrise, which aims to introduce direct return services from Sydney to London and Sydney to New York by 2022.
It is the second of three experimental voyages undertaken by Qantas. The first flight from New York JFK Airport to Sydney Airport took place in October.
The London route, though coming in from a distance, should actually be shorter due to the prevailing tailwind and an optimized route crossing the Russian, Kazakh, and Chinese airspace.
A Boeing 787-9 Dreamliner named "Longreach" is used for the London flight code QF7879. Despite a possible passenger capacity of up to 300, he carries only about 50 people, including four captain-led pilot Helen Trenerry.
Playing with Body Watches
Qantas Captain Helen Trenerry and First Officer Ryan Gill demonstrate the monitors they will carry during the flight.
Qantas  The lesser load is needed to make sure the plane can complete the record-breaking journey without refueling. In fact, the brand new jet will carry less than a full payload of fuel and should arrive in about 90 minutes.
On board are Qantas employees and frequent flyers, who are equipped with monitors to track sleep patterns, exercise, food consumption and use of on-board entertainment.
The data will be compiled by researchers from the Charles Perkins Center, a Sydney University medical research unit, to investigate how ultralong-range flying affects health, well-being and body clocks.
A team from Monash University in Melbourne is also participating to analyze how the pilots and crew are affected. They are monitored for melatonin levels before, after and during the flight, the hormone that affects sleep cycles.
On board will be a handful of journalists, including Richard Quest of CNN.
Data from the flight, which has the additional purpose of delivering a plane fresh from the Boeing factory in Seattle to the home base of Qantas, are used by the airline to assist the Australian authorities in granting the permit for permanent use of the service to support.
"These are test flights to show the regulator and to make sure that Qantas is convinced that we can safely carry it out," said Airline CEO Alan Joyce on the eve of the flight The East Coast of Australia to London and New York is really the last frontier in aviation and we are determined to meet all the requirements. "
If successful, Qantas hopes for the next-generation jetliner Super Fuel Efficient will be able to round off the journey with a larger passenger list – albeit with a stronger focus on First and Business Class customers.
The airline has asked both Boeing and Airbus to deliver the required aircraft in 2022 – with Boeing's 777X-9 and Airbus A350-1000 underway.
 The Service's audit finds one for the As aviation pressure increases, airline companies are increasing their carbon footprint, causing an increasing number of travelers to reduce aircraft use.
At the beginning of this week, Qantas announced that CO2 emissions would reach zero by 2050 CEO Joyce said this would be achieved through the use of new – not yet available – aircraft, aviation and fuel technologies be reached.  Captain Trenerry said that crossing a route that is not normally used by Qantas is one of the hardest elements her team will face during their last trip.
"The biggest challenge will be to fly through an unknown airspace, with the associated language difficulties."
It would be much easier than the last time Qantas attempted to fly in 1989. The Boeing 747, whose interior was largely undressed and filled to the brim with special aviation fuel, set off. It carried only 23 people and had to be towed to the runway to save every ounce of gas.
The modern repetition of the flight should be the occasion for another celebration when it lands in Sydney just before noon on Friday. It is the eve of Qantas' 99th birthday and hundreds of airline employees are expected to arrive at the airport to greet the plane.