What is a highly magnetized, rotating, neutron star emitting a beam of electromagnetic radiation that can only be observed when the beam of emission is pointing towards the Earth (known as the lighthouse effect)?
A pulsar is a highly magnetized rotating neutron star or white dwarf that emits a beam of electromagnetic radiation.
What is the name for the gaseous region of a star which emits light and which extends into a star's surface until the gas becomes opaque?
