Fusion is a nuclear reaction in which two or more nuclei, the centers of atoms, are forced together and combine creating a new larger atom. This reaction gives off a tremendous amount of energy, usually as light and solar radiation
Fusion makes two or more nuclei formed into one bit atom therefore creates a big amount of energy, as light and solar radiation.
Even white light from the Sun, which seems like an uninterrupted continuum of wavelengths, has gaps in some wavelengths. The gaps correspond to elements present in the Earth’s atmosphere that act as filters for specific wavelengths
The while light from the sun has wavelengths has gaps, the gaps are element on Earth that acts a filter for some wavelengths.
Spectroscopy confirms that hydrogen makes up about 74% of all matter in the universe.
That's a big percentage!! I'm so surprise