infrared-astronomy

Space telescopes do not look back in time by magic. They collect ancient light stretched by cosmic expansion. Here is how redshift reveals the early universe.

JWST's confirmed discoveries from 2022 to 2026: ancient galaxies too massive for theory, exoplanet biosignature debates, star formation in infrared, and solar system science.

Interstellar dust grains, typically far thinner than a human hair, dim starlight, build molecular hydrogen, shield star-forming clouds, carry the isotopic signatures of dead stars, and supply the solids from which planets grow.