Gottfried Helnwein likes to stand shoulder to shoulder with museum patrons when they look at his work, but he doesn't bask in his own glory. The Austrian photorealist aims to provoke, so he is ...
Hefty young galaxies defy the reigning model of cosmology, called "dark energy + cold dark matter" or ΛCDM. Images of six candidate massive galaxies, seen 500-800 million years after the Big Bang.
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