Atmospheres

Type-1 Atmospheres are oxygen dense, and cause no breathing problems

A ship entering a Type-1 Atmosphere takes 15 Heat Damage

Type-2 Atmospheres are oxygen deprived and cause some breathing problems

A ship entering a Type-2 Atmosphere takes 10 Heat Damage

Type-3 Atmospheres are potentially toxic and cause many breathing problems, but have some oxygen

A ship entering a Type-3 Atmosphere takes 5 Heat Damage

Type-4 Atmospheres are absolutely toxic, with no oxygen

A ship entering a Type-4Atmosphere takes no Heat Damage