James Webb Space Telescope discovers coldest interstellar ice ever seen


NASA’s newest space telescope isn’t just stretching astronomers’ view deeper into the universe, it’s also reaching colder temperatures than scientists have before.

The James Webb Space Telescope (JWST or Webb), the most powerful space observatory yet, has peered deep into a dense molecular cloud and found a rich variety of pristine interstellar ice — including a range of molecules crucial for life. Spotted at frigid temperatures of minus 440 degrees Fahrenheit (minus 263 degrees Celsius), these finds are the coldest ices ever measured.


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