Which stages in the life cycle of a massive star are listed in the order that they occur?
protostar→supernova→red supergiant\text{protostar} \rightarrow \text{supernova} \rightarrow \text{red supergiant}protostar→supernova→red supergiant
stable star→red supergiant→supernova\text{stable star} \rightarrow \text{red supergiant} \rightarrow \text{supernova}stable star→red supergiant→supernova
red supergiant→stable star→neutron star\text{red supergiant} \rightarrow \text{stable star} \rightarrow \text{neutron star}red supergiant→stable star→neutron star
supernova→protostar→red supergiant\text{supernova} \rightarrow \text{protostar} \rightarrow \text{red supergiant}supernova→protostar→red supergiant
25 exam-style questions on CIE IGCSE Physics 6.2.2a Galaxies and astronomical distances. Each one has a worked solution and a mark scheme showing where the marks go.