There's a bit of a historical mystery surrounding the star Theta Eridani. Ptolemy in the second cent...
To ancient astronomers, Theta Eridani was brighter for 1,000 years—now we know why
There's a bit of a historical mystery surrounding the star Theta Eridani. Ptolemy in the second century A.D. and al-Sufi in A.D. 964 both recorded Theta...
Author: Phys.org
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