How does SPHEREx contribute to the study of galaxy assembly throughout cosmic history?
Answer
By observing the collective light from galaxies to create a 3D map of the universe
Galaxy assembly refers to the process by which galaxies formed and grew over time. Instead of focusing on single, specific galaxies, this mission tracks the history of galaxy formation by observing the collective light from all galaxies across cosmic time. This comprehensive survey creates a 3D map, allowing researchers to chart how the universe transitioned from a hot, dense state to the structured large-scale cosmos observable today.
Related Questions
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