Search the Universe! Examine distant worlds and cosmic vistas through
cameras of giant observatories and NASA spacecraft.
How bright do stars shine? The amount of light a star
emits depends on how much nuclear fuel is being consumed and on whether
any of the emitted light can escape the surface of the star. The light a
star emits during its lifetime will change. When a star exhausts its
nuclear fuel, it can expand and become a red giant, or it can collapse and
become a black hole. There is lots known about stars and the life they
evolve through.
