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Cosmology

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illustration of inner structure of a white dwarf

WHAT LIES WITHIN  The inner structure of a white dwarf star (shown in this artist’s impression) has been mapped for the first time — and it’s more oxygen-rich than expected.

painting of stars

WRITTEN IN THE STARS  This painting by an aboriginal artist from Australia depicts the Milky Way, moon and ancient spirits. Newly official star names are inspired, in part, by historical astronomical writings and artifacts from indigenous cultures around the world.

supermassive black hole

GRAVITATIONAL GUZZLER  The black hole powering the quasar J1342+0928 (illustrated) weighs as much as 800 million suns, but it existed when the universe was just 5 percent of its current age. Scientists aren’t sure how black holes grew so big so early. 

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