TESS detects two new Jupiter-sized exoplanets orbiting dwarf stars

Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers from the University of California, Irvine (UCI) and ...
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Mira variable stars used to measure cosmic expansion rate

Mira variable stars change in luminosity in a regular pattern. Scientists have used 40 Mira variable stars to anchor an ...
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'Most pristine' star ever seen discovered at the Milky Way's edge — and could be a direct descendant of the universe's first stars

Astronomers have discovered a surprisingly "pristine" red giant with the lowest concentration of heavy elements ever seen in ...