Which statement below best explains why the James Webb Space Telescope was optimized for infrared viewing in order to study early galaxy formation in the universe?
The earliest galaxies were cooler than today’s galaxies, so rather than emitting light in visible wavelengths they emitted mostly infrared light.
It didn’t actually need to be optimized for infrared viewing; this choice was the result of a global vote by astronomers based on their own preferences.
The earliest galaxies were hotter than today’s galaxies, so rather than emitting light in visible wavelengths they emitted mostly infrared light.
The earliest galaxies are the most distant, and universal expansion has redshifted their spectra into infrared wavelengths.
The details of how a galaxy formed are encoded in the infrared portion of its spectrum.
