Into The Stars

An analysis of the makeup of stars By Lara, Emily, and Kai

How are elements in stars identified?

Elements are identified using the technique of spectroscopy. Spectroscopy is the analysis of radiation. As electrons move to lower energy levels, radiation is emitted at a certain wavelength. Each element has its own unique wavelength, allowing scientists to easily identify them. Bright line spectra are used to identify elements.

What are stars made up of?

  • approximately 71% Hydrogen
  • approximately 27% Helium
  • less than 2% of other elements such as Carbon, Oxygen, Nitrogen, Lithium, etc.