NASA
Every Cosmic Herald story on NASA — missions, launches, discoveries, and the business of space, newest first.
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Science & Discovery
A nearby dwarf galaxy is a blueprint for the universe's first dust
Webb found unexpected dust-making in Sextans A, a chemically primitive dwarf galaxy — evidence that the earliest galaxies could forge solid grains by pathways unlike those that dominate today.
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Science & Discovery
Saturn's wandering spin was never real — Webb found the culprit
For decades Saturn appeared to change its rotation rate, which should be impossible. Using Webb, researchers showed the 'change' was aurora-driven winds distorting the measurement — a planetary heat pump feeding itself.
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Astronomy
On this hot Jupiter, rock clouds form by morning and burn off by night
Webb resolved the day–night weather of WASP-94A b, a gas giant 700 light-years away: magnesium-silicate clouds blanket the morning side and vanish on the scorching evening side — and the planet is far less exotic than thought.