Black widows are notorious spiders identified by the colored, hourglass-shaped mark on their abdomens. Several species answer to the name, and they are found in temperate regions around the world ...
来自MSN10 个月
MeerKAT: the South African radio telescope that’s transformed our understanding of the cosmosIn one project, MeerKAT was used to observe the centre of our galaxy, the Milky Way. This allowed our team to see for the first time magnetic filaments that surround the supermassive black hole at ...
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