Articles related to "Hipparchus"



Ptolemaic Geocentric Astronomy
Ptolemy's geocentric astronomical system used four geometric devices, the deferent, epicycle, eccentric, and equant, to explain the observed motions of the planets.
• ptolemy • ptolemaic astronomy • hipparchus • equant • epicycle

Ptolemy, Astronomy, & Almagest
Ptolemy's geocentric astronomical system placed Earth at the center of the universe and he was considered the ultimate authority in astronomy for about 1400 years.
• ptolemy • claudius ptolemaeus • ptolemaic astronomy • hipparchus • equant

OK, So They Got It Wrong!
Even geniuses get it wrong sometimes.
• thales • pythagoras • anaxagoras • hippocrates • democritus

Supernova Destroys Star Rho Cas
10,000 light years away, the yellow hypergiant star, Rho Cassiopeiae ("Rho Cas" a type F8-G2 Ia0 star,) has a fantastic chance of already having blown itself apart.
• rho cassiopeiae • supernova • hypergiant • constalation • milky way


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