Mostly by spectrographic observation.
Every distinct element radiates exact and specific frequencies of light. By taking a tiny sample of the element and heating it to "glowing hot", we can measure the spectrum of the light that this element gives off. This is how a spectrometer works.
In a star, the elements are already at thousands of degrees, so all astronomers need to do is to analyze the spectrum; most stars have spectra that are as distinct as fingerprints to people. We can determine what elements are present, and in what proportions, with considerable accuracy.
scientists can tell the stars composition and temperature from its spectrum. Hope tht helps :]
Light wavelength and light spectrum i believe.
scientists can tell the stars composition and temperature from its spectrum. Hope tht helps :]
Scientists use telescopes to observe and analyze light emitted by stars in distant galaxies. By studying the light's intensity, temperature, composition, and movement, scientists can gather information about the stars' age, size, distance, and other properties. This data helps scientists understand the behavior and characteristics of stars in those galaxies.
Scientists can determine the composition of distant stars by analyzing their spectra. The light emitted by stars contains distinct absorption or emission lines that correspond to specific elements present in the star's atmosphere. By studying these spectral lines, scientists can identify the elements present in a star and determine its chemical composition.
Scientists measure the brightness, color, and spectral lines of stars to determine their temperature and composition. By analyzing the light emitted by stars, scientists can infer important information about their properties. The temperature of a star is usually determined by examining the peak wavelength of its emitted light, while the spectral lines reveal the elements present in the star's atmosphere.
Yes, scientists can analyze the light emitted by stars, known as stellar spectra, to learn about their chemical composition. By studying the absorption and emission lines in the spectrum, scientists can identify the elements present in the star and their relative abundances. This information helps astronomers understand the processes happening within stars and how they evolve over time.
they are made of helium and hydrogen scientists know this becuz of a spectrometer
Stars can be described by their temperature, size (diameter), brightness (luminosity), color, composition, and age. These characteristics help scientists classify and study stars in the universe.
The color of the light radiated by the spectra can show the internal composition as well as the gases burning on the outer layer. Red stars are colder and blue stars are hotter.
Scientists learn the temperature of the stars light for exampleif the star is red- it's cold but it's blue- it's hot and if it's WHITE- IT'S VERY HOT ! that's how you know the temperate of stars (Determining the color)
Scientists can learn the composition of a star from the amount and types of electromagnetic radiation, including light, that it gives off. Additionally, scientists can determine the rate of nuclear fusion from the amount of light released per unit of time.