A solar powered plane is getting ready to hit the skies once again this time at night.
Bbc solar panel plane.
Close share panel media playback is unsupported on your device media caption the bbc s john sudworth watched solar impulse take off from nanjing on the most difficult phase of its round the world.
Media caption andre borschberg gives the bbc a guided tour of the solar plane.
Media caption take off occurred at 23 30 gmt.
The bbc s mark lobel reports from abu dhabi.
The zero fuel aeroplane solar impulse has left the egyptian capital cairo on the last leg of its global tour.
A solar powered plane is expected to begin the first ever round the world trip of its kind on monday.
Bbc solar and more specialize in industrial commercial federal state and local government custom turnkey projects in water separation technologies solar outdoor led lighting systems and utility scale solar power solutions.
It will be the first ever manned night flight on a plane propelled exclusively by solar energy.
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The unmanned craft flies high in the atmosphere to avoid commercial air traffic and adverse weather.
The carbon fibre aircraft has a huge wingspan which at 72m is wider than a boeing 747 jet.
And yet the vehicle.
Image caption the financial services ombudsman said it had received 2 000 complaints about solar panels.
The flight should last about 48 hours.