=====Unit of measurement used===== Wg=Weka gram/10^30 gram/1,000,000,000,000,000,000,000,000,000 Kg/2,204,622,621,848,775,800,000,000,000 lbs M☉=Solar mass/mass of sun/1,989 Wg Mm=Mega-metre/1,000km/621 mi Km=0.621mi AU=Astronomical unit/150,000,000km/92,960,000 mi L☉=Solar luminosity/Luminosity of 1 sun/382,800,000,000,000,000,000,000,000 Watts/3.828*10^29 watts =====Instructions===== Pull the small white coloured bar in the slider to adjust either the mass, temperature or size of the star. Click the … button to adjust either the mass, temperature or size of the star precisely. The red zone is the hot zone (life can’t form due to extreme heat and radiation), the green zone is the habitable zone and lastly, the blue zone is the cold zone (life can’t form due to insufficient heat)