The emission spectra of gases can be used to study stars because the absorption spectra of stars are the exact opposite of the emission spectra of the gases that compose the stars. When the light from a star is split into its component colors, it creates a continuous spectrum except for specific missing colors. These missing colors are the same ones emitted by heated gases in laboratory settings.Know More
Light from stars appears white and, when split, contains a large spectrum of colors. Individual gases, however, only emit certain wavelengths of light when heated, according to the way their electrons are configured. When atoms absorb heat, some of their electrons move to larger, more energetic orbitals. When the electrons move back into their resting orbital, they release light energy at particular frequencies.
Stars emit light and a much wider range of frequencies than just the heat emission spectra of their component gases. Any color that a light emits, however, it also absorbs. Thus, the light generated by other processes that matches the gases' emission spectra is actually absorbed by the gases around the star. This creates darker regions in the spectra of the star itself and indicates the gases that compose it.Learn more about Stellar Astronomy
Stars form when clouds of interstellar dust and gas collapse in on themselves and heat up, eventually leading to the nuclear fusion of hydrogen into helium. Several stars typically form out of a single cloud, making star clusters extremely common.Full Answer >
Stars twinkle because of turbulence in the Earth's atmosphere, according to Universe Today. As light passes through the turbulence it gets refracted causing the light to look as if it is moving.Full Answer >
The life cycle of a star is related to its mass. A star the size of the sun has a life cycle of approximately 10 billion years. A star 10 times the size of the sun, however, burns fuel faster and can have a main phase of millions of years.Full Answer >
Stars begin the formation process in cold clouds, called molecular clouds; eventually, these clouds collapse internally, generating a solar nebula, which shrinks and generates heat, spins and flattens. Following the change in the nebula, stars have distinct shapes and exist independently of their formative clouds. To fully transform into a star, they undergo the process of nuclear fusion, which produces heat and energy sufficient for preventing the further collapse of the nebula, ultimately helping stars expand.Full Answer >