An observation of an ultra-faint galaxy, captured as it was shortly after the Big Bang, indicates the presence of material from the first generation of stars. Because light travels at a finite speed, ...
One of the largest known stars in the universe underwent a dramatic transformation in 2014, new research shows, and may be preparing to explode. A study led by Gonzalo Muñoz-Sanchez at the National ...
Hypervelocity stars are rare stellar objects travelling at velocities exceeding the local Galactic escape speed, providing unique tracers of dynamic interactions in galactic nuclei, star clusters and ...
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