Media Contributed by Rick
Tycho's Supernova Remnant In 1572, the Danish astronomer Tycho Brahe observed and studied the explosion of a star that became known as Tycho's supernova. More than four centuries later, Chandra's image of the supernova remnant shows an expanding bubble of multimillion degree debris (green and red) inside a more rapidly moving shell of extremely high energy electrons (filamentary blue). As a huge ball of exploding plasma
The Tychonic System Objects on blue orbits (the Moon and the Sun) revolve around the Earth. Objects on orange orbits (Mercury, Venus, Mars, Jupiter, and Saturn) revolve around the Sun. Around all is a sphere of fixed stars.
Tycho Brahe 1586 portrait of Tycho Brahe framed by the family shields of his noble ancestors
Tycho Brahe's grave in Prague new tomb stone from 1901
Birthplace Tycho Brahe Knutstorp Castle, built in the 16th century by Otte Brahe.
Tycho Brahe cropped
Aristarchus' calculations Aristarchus's 3rd century BC calculations on the relative sizes of, from left, the Sun, Earth and Moon, from a 10th-century CE Greek copy
Aristarchos of Samos cropped from photo of Statue of Aristarchus of Samos at the Aristotle University of Thessaloniki
Aberration of Light The apparent position of a star viewed from the Earth depends on the Earth's velocity. The effect is typically much smaller than illustrated.
James Bradley cropped
