ALMA and VLT find too many massive stars in starburst galaxies, near and far

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Astronomers using ALMA and the VLT have discovered that both starburst galaxies in the early Universe and a star-forming region in a nearby galaxy contain a much higher proportion of massive stars than is found in more peaceful galaxies. These findings challenge current ideas about how galaxies evolved, changing our understanding of cosmic star-formation history and the build up of chemical elements.
via Science Daily
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Atomic clock comparison confirms key assumptions of 'Einstein's elevator'

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By comparing different types of remote atomic clocks, physicists have performed the most accurate test ever of a key principle underlying Albert Einstein's famous theory of general relativity, which describes how gravity relates to space and time.
via Science Daily
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Higgs boson comes out on top

Splitting the light

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Space Science Image of the Week: How a cutting-edge instrument on the James Webb Space Telescope will inspect many distant galaxies at once
via ESA Space Science
http://www.esa.int/ESA_Multimedia/Images/2018/06/Testing_the_NIRSpec_instrument_on_the_Webb