Solar Impulse 2 takes off from Nagoya to Hawaiihttps://indianexpress.com/article/world/world-others/solar-impulse-2-takes-off-from-nagoya-to-hawaii/

Solar Impulse 2 takes off from Nagoya to Hawaii

The 120-hour flight from Nagoya to Hawaii is the longest leg in Solar Impulse's journey around the world. The project is meant to display the potential of clean power.

Solar Impulse 2, Solar Impulse II, Solar Impulse, Solar Plane, Solar-powered plane, Solar Aircraft, Solar Aeorplane, Andre Borschberg, Nagoya news, Tokyo news, Japan news, Hawaii news, US news, World news, International news
The Solar Impulse 2 flies over Nagoya Airport after taking off in Toyoyama, near Nagoya, central Japan. (Kyodo News via AP)

A solar-powered plane attempting to circumnavigate the globe without fuel took off from Japan early Monday after an unscheduled, month-long stop.

The Solar Impulse 2 departed around 3 am from an airport in Nagoya in central Japan. The plane with one pilot is attempting a 120-hour flight to Hawaii, the longest leg of its journey so far.

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The plane requires the right weather conditions, and organizers were withholding an official announcement of the takeoff until they are sure the flight can continue.

“A formal communiqué will be issued once Solar Impulse has passed the Point of No Return and that we know that the Pilot André Borschberg is on a safe track to reach Hawaii,” the press team said in an email to journalists.

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The Solar Impulse originally left Nanjing, China, for Hawaii, but diverted to Japan on June 1 because of unfavorable weather ahead. It has been waiting for the right conditions to depart.

The flight over the Pacific to Hawaii is risky because there is no place to land in an emergency.

The Solar Impulse 2 is powered by more than 17,000 solar cells on its wings that recharge its batteries, enabling it to fly.

The project is meant to demonstrate the potential of improved energy efficiency and clean power, though solar-powered air travel is not yet commercially practical.