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2023 Bethe Lecture: How fast is the universe expanding?(图)
宇宙膨胀 哈勃常数 宇宙学
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2023/5/17
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How fast is the universe expanding? Galaxies provide one answer(图)
universe expanding Galaxies answer
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2021/4/9
Determining how rapidly the universe is expanding is key to understanding our cosmic fate, but along with more precise data comes a conundrum. Estimates based on measurements in our current universe d...