More than 70 million are under heat warnings and advisories this weekend through early next week as a potent heat dome sends temperatures soaring to levels the National Weather Service is calling "potentially deadly."
The big picture: The heat wave, made worse by a long-term, climate change-influenced drought, shows signs of eventually swelling into the middle of the country and then eastward through next week.
Scientists have created models that mimic the lives and structures of huge groupings of galaxies seen in the early universe, 11 billion years ago, a new study reports.
Why it matters: By having simulations that show the machinations of these galaxy clusters on a large scale, scientists will be able to test fundamental aspects of our understanding of the nature and physics of the universe.
