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seen over Prague on November 12
The Great comet of 1577 — seen over Prague on November 12
Photo Credit: By Jiřrí Jakubuv Dačický - Zentralbibliothek Zürich, Public Domain, https://commons.wikimedia.org/w/index.php?curid=70591808
The Great comet of 1577 seen over Prague on November 12
The quadrant (radius c. 194cm) was made from brass and was affixed to a wall that was oriented precisely north-south. The observer (right) views a star through the opposite opening (upper left) to determine the star's altitude as it passes through the meridian. An assistant (lower right) reads the time off a clock and another one (lower left) records the measurements. The area above the quadrant is filled with a mural painting showing several other of Brahe's instruments. See <a href='http://www.kb.dk/en/nb/tema/webudstillinger/brahe_mechanica/brahe_fsi.html?page=20'>Brahe's description</a>.
Brahe's mural quadrant — The quadrant (radius c. 194cm) was made from brass and was affixed to a wall that was oriented precisely north-south. The observer (right) views a star through the opposite opening (upper left) to determine the star's altitude as it passes through the meridian. An assistant (lower right) reads the time off a clock and another one (lower left) records the measurements. The area above the quadrant is filled with a mural painting showing several other of Brahe's instruments. See Brahe's description.
Photo Credit: Engraving from the book: Tycho Brahe (1598), Astronomiae instauratae mechanica, Wandsbeck. Downloaded from the online exhibition at the Royal Library; stitching by Axel Boldt, Public Domain, https://commons.wikimedia.org/w/index.php?curid=19389032
Brahe's mural quadrant The quadrant (radius c. 194cm) was made from brass and was affixed to a wall that was oriented precisely north-south. The observer (right) views a star through the opposite opening (upper left) to determine the star's altitude as it passes through the meridian. An assistant (lower right) reads the time off a clock and another one (lower left) records the measurements. The area above the quadrant is filled with a mural painting showing several other of Brahe's instruments. See Brahe's description.
from the 1663 Blaeu's Atlas Major
Uraniborg main building — from the 1663 Blaeu's Atlas Major
Photo Credit: By Blaeu - Blaeu's Atlas Major, Public Domain, https://commons.wikimedia.org/w/index.php?curid=1302199
Uraniborg main building from the 1663 Blaeu's Atlas Major
from his book Astronomiae instauratae mechanica (1598)
Tycho Brahe's Uraniborg — from his book Astronomiae instauratae mechanica (1598)
Photo Credit: By Tycho Brahe - Transferred from en.wikipedia to Commons. Original uploader was Wikibob at en.wikipedia on 2004-07-04 (original upload date), Public Domain, https://commons.wikimedia.org/w/index.php?curid=1920637
Tycho Brahe's Uraniborg from his book Astronomiae instauratae mechanica (1598)
Observations by Brahe of the Great Comet of 1577 —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=1836840
Observations by Brahe of the Great Comet of 1577
Close-up of an inner section of Kepler's model
Kepler's model — Close-up of an inner section of Kepler's model
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=37301
Kepler's model Close-up of an inner section of Kepler's model
Kepler's birthplace, in Weil der Stadt —
Photo Credit: By MarkusHagenlocher, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=1786865
Kepler's birthplace, in Weil der Stadt
Cropped from the GDR stamp featuring Kepler
Johannes Kepler — Cropped from the GDR stamp featuring Kepler
Photo Credit: By Hochgeladen von --Nightflyer (talk) 19:29, 10 October 2009 (UTC) - German post, Public Domain, https://commons.wikimedia.org/w/index.php?curid=8031144
Johannes Kepler Cropped from the GDR stamp featuring Kepler
Global radar view of Venus (without the clouds) from Magellan between 1990 and 1994
Venus — Global radar view of Venus (without the clouds) from Magellan between 1990 and 1994
Photo Credit: By NASA - http://photojournal.jpl.nasa.gov/catalog/PIA00104, Public Domain, https://commons.wikimedia.org/w/index.php?curid=11826
Venus Global radar view of Venus (without the clouds) from Magellan between 1990 and 1994
Star map of the constellation Cassiopeia showing the position of the Supernova of 1572. The labeled stars are: A caput Caßiopeæ (ζ Cas) B pectus Schedir. (α Cas) C Cingulum (η Cas) D flexura ad Ilia (γ Cas) E Genu (δ Cas) F Pes (ε Cas) G suprema Cathedræ (β Cas) H media Chatedræ (κ Cas) I Noua stella. (SN 1572)
Page from Tycho Brahe's De nova stella — Star map of the constellation Cassiopeia showing the position of the Supernova of 1572. The labeled stars are: A caput Caßiopeæ (ζ Cas) B pectus Schedir. (α Cas) C Cingulum (η Cas) D flexura ad Ilia (γ Cas) E Genu (δ Cas) F Pes (ε Cas) G suprema Cathedræ (β Cas) H media Chatedræ (κ Cas) I Noua stella. (SN 1572)
Photo Credit: By Tycho Brahe - Brahe, Tychonis (1573) Public Domain, https://commons.wikimedia.org/w/index.php?curid=14312843
Page from Tycho Brahe's De nova stella Star map of the constellation Cassiopeia showing the position of the Supernova of 1572. The labeled stars are: A caput Caßiopeæ (ζ Cas) B pectus Schedir. (α Cas) C Cingulum (η Cas) D flexura ad Ilia (γ Cas) E Genu (δ Cas) F Pes (ε Cas) G suprema Cathedræ (β Cas) H media Chatedræ (κ Cas) I Noua stella. (SN 1572)
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
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
Photo Credit: By NASA/CXC/Rutgers/J.Warren & J.Hughes et al. - http://chandra.harvard.edu/photo/2005/tycho/, Public Domain, https://commons.wikimedia.org/w/index.php?curid=6706920
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
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