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Mr Scheidt notes that for warm-toned LEDs, the efficiency drops somewhat, but it's still possible to achieve around 160 lumens per watt for warm white luminaires, with a colour temperature of 2,700 kelvin.

Whereas a basic robot can unconsciously detect conditions such as colour, temperature or sound, consciousness describes the qualitative feeling that is associated with those perceptions, together with the deeper processes of reflection, communication and thought, says Matthias Michel, a philosopher of science and a PhD student at Sorbonne University in Paris.

A rotating research centre can turn 360 degrees, with adjustable interior lamps changing the colour, temperature, brightness and light spectrum.

They changed the colour temperature of the overhead lights and the tint of the large, glass windows.

Combined with existing information about factors including stars’ colour, temperature and chemical composition, this detailed map will enable researchers to reconstruct the Galaxy’s archaeology: how it got to its present state over the past 13 billion years.