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