Answer:
Stars emit light because they are extremely hot and produce energy through nuclear fusion reactions in their cores. The light that stars emit is a combination of different wavelengths, and each wavelength corresponds to a specific type of energy. By analyzing the wavelengths of light that a star emits, we can determine what types of gases are present in the star.
When a gas absorbs light of a certain wavelength, it leaves behind a characteristic "fingerprint" in the star's spectrum. By studying this fingerprint, astronomers can determine the types and amounts of gases present in the star. This is known as spectroscopy, and it is a powerful tool that allows astronomers to study the properties of stars and other celestial objects.
Etelmann Observatory is a great place to learn more about the stars and how we study them. You can see the stars up close through telescopes and learn about the different types of light that they emit. You can also learn about spectroscopy and how it helps us understand the properties of stars and other celestial objects.
Step-by-step explanation: