See what happened when Chinese Astronauts light fire on Tiangong Space Station

It was declared to be both impossible and unsafe for Chinese astronauts on board the Tiangong space station to light a candle with a match during a live broadcast.

On September 21, two astronauts, Gui Haichao and Zhu Yangzhu, lighted a candle to demonstrate how flames burn in microgravity during a live lecture broadcast from the space station.

To the amazement of everyone seeing, the flames look almost spherical instead of the earthly teardrop-shaped flames.

Some were even taken aback by the tight regulations the International Space Station (ISS) has in place around combustible objects and open fires.

“You can see that the flame of a candle in the space station burns in a spherical shape, while in comparison, the flame of a candle when the candle is upright on Earth,” Gui stated, as cited in the China Central Television (CCTV) video.

The Chinese astronauts gave a few live lectures from space last month, providing youthful viewers with an inside look at their life in orbit.

The Mengtian lab module of the space station served as the astronauts’ housing and working quarters, according to the Chinese space agency.

The astronauts also extended an invitation to the audience to take part in investigations aimed at unraveling the secrets of the cosmos and pointing out distinctions between research conducted on Earth and in space.

A number of interesting experiments were also carried out on board the Tiangong space station, including a gyroscope, a momentum conservation experiment, a water droplet “table tennis” experiment, and a spherical flame experiment. However, the moment they lighted a candle turned into the main event.

During the lecture, astronauts also engaged in real-time communication with Earth-based educators and pupils.

Beihang University student Zhao Ziyi expressed her pride at witnessing her professor Gui deliver a lecture within the space station. As a member of the inaugural class of Beihang University’s special plan on aeronautical mechanics, I pledge to put in more effort to build fundamental disciplines, emulate astronauts, and fulfill our aspiration to give back to our motherland with aerospace development”.

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