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A cosmic scene with bright stars and nebulae, overlaid with the logos of the American Museum of Natural History and NASA, and text: Eric Andersson, The Star-by-Star Formation of the Smallest Galaxies.

The star-by-star formation of the smallest galaxies

Eric Andersson, American Museum of Natural History

A blurry, bright yellow and orange circular spot is centered against a dark blue and black background, resembling a glowing object in space seen through an infrared or heat-sensitive camera.

Flaring Activity of the Black Hole at the Center of the Galaxy

Farhad Yusef-Zadeh, Northwestern University

A swirling black hole surrounded by a bright, glowing accretion disk in deep space, with scattered stars and cosmic dust filling the dark background.

Electromagnetic and Gravitational Wave Signals from Merging Black Holes and Neutron Stars

Black hole-neutron star and neutron star-neutron star mergers are powerful emitters of gravitational waves, and can produce a wide range of bright electromagnetic transients. They also provide us with a remarkable environment to study nuclear interactions in the cold, dense core of neutron stars, and may significantly contribute to the production of many heavy elements whose origin remains unexplained.