Science ❯ Space Exploration ❯ James Webb Space Telescope

Observations

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Interstellar Comet 3I/ATLAS Shows Ancient, Cold Origin in JWST and Ground Spectra

New isotopic measurements point to formation in a metal-poor near-30 kelvin environment, suggesting the comet may date from 10–12 billion years ago.

JWST Finds Phosphine on Ancient Brown Dwarf, Matching Model Predictions

Asteroid 2024 YR4 Now Has 4.3% Chance of Striking the Moon