WASHINGTON (Reuters) – Dark matter, the mysterious invisible material that makes up most galaxies, including our own galaxy, is again confusing scientists, with new observations of distant galaxies contradicting current understanding of its nature. An undated NASA / ESA Hubble Space Telescope image shows the giant Galaxy Cluster MACSJ1206. NASA …
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Despite the urgency of beating COVID-19, health officials may delay the development of an effective vaccine. Authorities in the U.S. and elsewhere have yet to authorize an ethical charge investigation procedure called “trials with human challenge.” Challenge tests deliberately involve volunteers with the disease – which explains the official retention …
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Shoppers may just count on end-of-summer offers and promotions after school this time of year, but the coronavirus pandemic has thrown the retail calendar out of the way, making year-over-year comparisons difficult. “Changes in expenditure on school / college are the latest factor comparison compared to last year. We are …
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