If a space telescope discovers early galaxies, what specific requirement makes large ground telescopes essential for characterizing them?

Answer

Tasks requiring long exposure times and massive light collection that a smaller space telescope cannot efficiently provide.

The detailed characterization, such as analyzing chemical composition and mapping stellar populations, often requires long exposure times and massive light collection that only multi-meter ground mirrors can efficiently deliver.

If a space telescope discovers early galaxies, what specific requirement makes large ground telescopes essential for characterizing them?

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Why Do We Need Both Ground-Based and Space Telescopes?

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