Day: June 30, 2021

Simulation: Formation of the First Stars

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How did the first stars form? To help find out, the SPHINX computer simulation of star formation in the very early universe was created, some results of which are shown in the featured video. Time since the Big Bang is shown in millions of years on the upper left. Even 100 million years after the Big Bang, matter was spread too uniformly across the cosmos for stars to be born. Besides background radiation, the universe was dark. Soon, slight matter clumps rich in hydrogen gas begin to coalesce into the first stars. In the time-lapse video, purple denotes gas, white denotes light, and gold shows radiation so energetic that it ionizes hydrogen, breaking it up into charged electrons and protons. The gold-colored regions also track the most massive stars that die with powerful supernovas. The inset circle highlights a central region that is becoming a galaxy. The simulation continues until the universe was about 550 million years old. To assess the accuracy of the SPHINX simulations and the assumptions that went into them, the results are not only being compared to current deep observations, but will also be compared with more direct observations of the early universe planned with NASA’s pending James Web Space Telescope. via NASA https://ift.tt/2SE3PQU

Wikipedia article of the day for June 30, 2021

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Wikipedia article of the day is All About That Bass. Check it out: Article-Link Summary: “All About That Bass” is the debut single of American singer-songwriter Meghan Trainor (pictured), released through Epic Records on Juneย 30, 2014. The song was included on Trainor’s first extended play (EP) Title (2014) and her studio album of the same name (2015). Written by Trainor and producer Kevin Kadish, “All About That Bass” is a bubblegum pop, doo-wop and hip hop track. Trainor, who struggled with her negative body image as a teenager, was inspired to write the song to promote self-acceptance. Some music critics praised the song’s production and memorable message, while others called it a novelty song and criticized the failure of its lyrics to empower all body types. The song was nominated for Record of the Year and Song of the Year at the 57th Annual Grammy Awards. It was the best-selling song in the United States by a female artist during the 2010s, and was certified Diamond by the Recording Industry Association of America (RIAA).