An article from Science News Feb 2020
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An article from Science News Jan 2020
These are the most detailed images of the Sun ever taken
An article from Science News Jan 2020
Tiny meteorites suggest ancient Earth had a carbon dioxide–rich atmosphere
An article from Science News Jan 2020
A 2.2-billion-year-old crater is Earth’s oldest recorded meteorite impact
An article from Science News Jan 2020
Phosphorus, a key ingredient of life, has been found in a newborn star system
An article from Science News Jan 2020
Color-changing fibers help reveal mysteries of how knots work
Briefing
7-billion-year-old stardust is the oldest solid material on Earth Published in 2020
Cosmochemists have discovered the oldest solid material known to exist on Earth. The material, stardust, consists of silicon carbide grains measuring around one micrometer in size. The grains date back approximately 7 billion years, or about 2.5…
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Abel, Neils Henrik (1802–1829)
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Abetti, Giorgio (1882–1982)
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Adams, John Couch (1819–1892)
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Adams, Walter Sydney (1876–1956)
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Aiken, Howard Hathaway (1900–1973)
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Airy, George Biddell (1801–1892)
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Aitken, Robert Grant (1864–1951)
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al-Sufi (903–986)
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Aleksandrov, Pavel Sergeevich (1896–1982)
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Alpher, Ralph Asher (1921–2007)
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Ambartsumian, Viktor Amazasp Amazaspovich (1908–1996)
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Amsler-Laffon, Jakob (1823–1912)
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Anaximander the Elder (c. 611–547 BC)
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Anthemius (lived 5th–6th century AD)
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Antoniadi, Eugène Marie (1870–1944)
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Apollonius of Perga (c. 245–c.190 BC)
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Arago, (Dominique) François (Jean) (1786–1853)
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