In 6–8 sentences, write a summary of what you learned from this activity. Include

In this activity, I learned that spectral shifts, particularly redshift and blueshift, are indicative of an object's motion relative to an observer. The Doppler effect explains these shifts, where light from objects moving away from us appears redshifted (stretching of wavelengths), while light from objects moving closer appears blueshifted (compression of wavelengths). These shifts can provide insights into the velocities of celestial bodies and the expansion of the universe.

Scientists analyze the spectra of distant galaxies to determine their redshift, which supports the Big Bang theory by indicating that the universe is expanding. This expansion suggests that the universe was once concentrated in a singular state and has been growing since that time. Additionally, the uniformity of the cosmic microwave background radiation, analyzed through its spectrum, aligns with predictions made by the Big Bang model, providing further evidence of its validity. Through spectral analysis, scientists gain crucial insights into the dynamics and evolution of the universe, reinforcing our understanding of its origins.