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Ancient stars could make elements with more than 260 protons

R-process nucleosynthesis. Credit: Lawrence Livermore National Laboratory The first stars of the universe were monstrous beasts. Comprised only of hydrogen and helium, they could be 300 times more massive than the sun. Within them, the first of the heavier elements were formed, then cast off into the cosmos at the end of their short lives.

Tama Mischke December 24, 2023

Motion of stars near Milky Way’s central black hole is only predictable for a few hundred years

Simulation of the motions of stars around the black hole at the center of the Milky Way. On the left are shown the orbits of the stars. These orbits have been calculated for 10,000 years. It seems that the stars do not diverge from their orbits. The right panel is a zoom-in near the crowded

Becki Pingree September 14, 2023

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stars

Ancient stars could make elements with more than 260 protons

Motion of stars near Milky Way’s central black hole is only predictable for a few hundred years

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