Cosmology

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people throwing a ball on a carousel

By playing catch while on a bare-bones carousel, participants in Genius discover the Coriolis effect.

Dwarf galaxy Reticulum II

HEAVY METALS  Scientists observed nine stars (circled) in the dwarf galaxy Reticulum II. Their data (shown for three stars) indicated the presence of heavy elements, formed through a sequence of reactions known as the “r-process.”

illustration of a black hole's accretion disk

NEW WAVE If the supermassive black hole from the film Interstellar were real, scientists might be able to detect a unique signature of its gravitational waves as it swallowed a companion. This visualization shows the fictional black hole’s accretion disk.

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