About the Editors: Dr. Hans Gaab, born 1956 in Ansbach, is a teacher for mathematics and physics at the Labenwolf-Gymnasium in Nuremberg and lives with his wife in Fuerth. From 1986–1989 he worked as a math’s teacher for the Deutscher Entwicklungsdienst DED (German Development Service) in the capital of Tanzania, Dodoma. Since many years he has been studying local history of astronomy and published numerous articles. In 2006 he was awarded the Silver Medal “Bene Merenti de Astronomia Norimbergensi” from the Nuremberg Astronomical Society. In 2010 he gained his doctorate for a thesis about Abdias Trew (1597–1669). It was published as volume 42 of the Acta Historica Astronomiae. In 2015 he published an extensive work about Albrecht Duerer’s star charts. From 2015 to 2017 he was Vice President of the Simon Marius Society.Pierre Leich, born 1960, is a freelancer in science communication and the history of astronomy. For 10 years he was chairman of the art fair ART Nuremberg, edited an art magazine for 6 years and for 4 years he was managing director of Theatresports World Championship to FIFA WM 2006. Since 2003 Leich has been project manager of the Long Night of Sciences in Nuremberg / Fuerth / Erlangen and for the Science Day of the Nuremberg Metropolitan Region. Leich is honorary second chairman of the Cauchy-Forum-Nuremberg, curator of the Society of Astronomy Nuremberg, member of the advisory board of the Nicolaus-Copernicus-Planetarium Nuremberg and member of the Science Forum of the Nuremberg Metropolitan Region. In the “International Year of Astronomy 2009” he was branch manager for Northern Bavaria. Sind 2014 he has been editor of the Marius-Portal and President of the Simon Marius Society.

“Marius’ major works are reproduced in full. It is rewarding, thorough, academic, comprehensive, and well-illustrated. It is just the sort of major work that will grace the shelves of an astronomy library for many decades to come.” (David W. Hughes, The Observatory, Vol. 39 (1273), December, 2019)

• Foreword.- Preface.- The World of Jupiter, English Translation of Mundus Iovialis.- Concerning the Biography of Simon Marius.- Hans Philip Fuchs von Bimbach (c. 1567–1626), Patron of Simon Marius.- Georg Caesius as Appointed Court Astronomer of the Margrave Georg Friedrich of Brandenburg-Ansbach.- Simon Marius’s Mundus Iovialis and the Discovery of the Moons of Jupiter.- Simon Marius’s Reports on the Comets of 1596 and 1618, in the Context of the Comet Research of his Times.- Sunspot Observations by Simon Marius 1611 to 1619.- An Astronomer Too Excellent: Simon Marius, the Telescope, and the Problem of the Stars during the Copernican Revolution.- In the Turmoil of the Early 17th-century Cosmology Debate – Simon Marius as a Supporter of the Tychonic System.- Simon Marius as a Calendar Writer.- Simon Marius as a Tychonic Calendar Maker.- Simon Marius – Tabulae Directionum Novae – A first Approach.- Translating the Mundus Iovialis into German.- Prickard’s English Translation of Mundus Iovialis, Completed.- Priority, Reception and Rehabilitation of Simon Marius – From the Accusation of Plagiarism to the Marius Portal as his Virtual Collected Works.- A Word of Caution about the ‘Rehabilitation’ of Simon Marius.- The Marius Portal – Simon Marius as Digital Human in the 21st centrury.- The Franconian Asteroid 7984 Marius.- A Model of our Solar System on a Scale of 1 : 50 Billion.- “Sun, Moon and Marius” – An Exhibition with Pictures from the Art School “Obraz” in Protwino (Russia).- Simon Marius – Works.- The Life and Work of Simon Marius at a Glance.- About the Authors

About the Editors: Dr. Hans Gaab, born 1956 in Ansbach, is a teacher for mathematics and physics at the Labenwolf-Gymnasium in Nuremberg and lives with his wife in Fuerth. From 1986–1989 he worked as a math’s teacher for the Deutscher Entwicklungsdienst DED (German Development Service) in the capital of Tanzania, Dodoma. Since many years he has been studying local history of astronomy and published numerous articles. In 2006 he was awarded the Silver Medal “Bene Merenti de Astronomia Norimbergensi” from the Nuremberg Astronomical Society. In 2010 he gained his doctorate for a thesis about Abdias Trew (1597–1669). It was published as volume 42 of the Acta Historica Astronomiae. In 2015 he published an extensive work about Albrecht Duerer’s star charts. From 2015 to 2017 he was Vice President of the Simon Marius Society.Pierre Leich, born 1960, is a freelancer in science communication and the history of astronomy. For 10 years he was chairman of the art fair ART Nuremberg, edited an art magazine for 6 years and for 4 years he was managing director of Theatresports World Championship to FIFA WM 2006. Since 2003 Leich has been project manager of the Long Night of Sciences in Nuremberg / Fuerth / Erlangen and for the Science Day of the Nuremberg Metropolitan Region. Leich is honorary second chairman of the Cauchy-Forum-Nuremberg, curator of the Society of Astronomy Nuremberg, member of the advisory board of the Nicolaus-Copernicus-Planetarium Nuremberg and member of the Science Forum of the Nuremberg Metropolitan Region. In the “International Year of Astronomy 2009” he was branch manager for Northern Bavaria. Sind 2014 he has been editor of the Marius-Portal and President of the Simon Marius Society.

“Marius’ major works are reproduced in full. It is rewarding, thorough, academic, comprehensive, and well-illustrated. It is just the sort of major work that will grace the shelves of an astronomy library for many decades to come.” (David W. Hughes, The Observatory, Vol. 39 (1273), December, 2019)

• Foreword.- Preface.- The World of Jupiter, English Translation of Mundus Iovialis.- Concerning the Biography of Simon Marius.- Hans Philip Fuchs von Bimbach (c. 1567–1626), Patron of Simon Marius.- Georg Caesius as Appointed Court Astronomer of the Margrave Georg Friedrich of Brandenburg-Ansbach.- Simon Marius’s Mundus Iovialis and the Discovery of the Moons of Jupiter.- Simon Marius’s Reports on the Comets of 1596 and 1618, in the Context of the Comet Research of his Times.- Sunspot Observations by Simon Marius 1611 to 1619.- An Astronomer Too Excellent: Simon Marius, the Telescope, and the Problem of the Stars during the Copernican Revolution.- In the Turmoil of the Early 17th-century Cosmology Debate – Simon Marius as a Supporter of the Tychonic System.- Simon Marius as a Calendar Writer.- Simon Marius as a Tychonic Calendar Maker.- Simon Marius – Tabulae Directionum Novae – A first Approach.- Translating the Mundus Iovialis into German.- Prickard’s English Translation of Mundus Iovialis, Completed.- Priority, Reception and Rehabilitation of Simon Marius – From the Accusation of Plagiarism to the Marius Portal as his Virtual Collected Works.- A Word of Caution about the ‘Rehabilitation’ of Simon Marius.- The Marius Portal – Simon Marius as Digital Human in the 21st centrury.- The Franconian Asteroid 7984 Marius.- A Model of our Solar System on a Scale of 1 : 50 Billion.- “Sun, Moon and Marius” – An Exhibition with Pictures from the Art School “Obraz” in Protwino (Russia).- Simon Marius – Works.- The Life and Work of Simon Marius at a Glance.- About the Authors

About the Editors: Dr. Hans Gaab, born 1956 in Ansbach, is a teacher for mathematics and physics at the Labenwolf-Gymnasium in Nuremberg and lives with his wife in Fuerth. From 1986–1989 he worked as a math’s teacher for the Deutscher Entwicklungsdienst DED (German Development Service) in the capital of Tanzania, Dodoma. Since many years he has been studying local history of astronomy and published numerous articles. In 2006 he was awarded the Silver Medal “Bene Merenti de Astronomia Norimbergensi” from the Nuremberg Astronomical Society. In 2010 he gained his doctorate for a thesis about Abdias Trew (1597–1669). It was published as volume 42 of the Acta Historica Astronomiae. In 2015 he published an extensive work about Albrecht Duerer’s star charts. From 2015 to 2017 he was Vice President of the Simon Marius Society.Pierre Leich, born 1960, is a freelancer in science communication and the history of astronomy. For 10 years he was chairman of the art fair ART Nuremberg, edited an art magazine for 6 years and for 4 years he was managing director of Theatresports World Championship to FIFA WM 2006. Since 2003 Leich has been project manager of the Long Night of Sciences in Nuremberg / Fuerth / Erlangen and for the Science Day of the Nuremberg Metropolitan Region. Leich is honorary second chairman of the Cauchy-Forum-Nuremberg, curator of the Society of Astronomy Nuremberg, member of the advisory board of the Nicolaus-Copernicus-Planetarium Nuremberg and member of the Science Forum of the Nuremberg Metropolitan Region. In the “International Year of Astronomy 2009” he was branch manager for Northern Bavaria. Sind 2014 he has been editor of the Marius-Portal and President of the Simon Marius Society.

“Marius’ major works are reproduced in full. It is rewarding, thorough, academic, comprehensive, and well-illustrated. It is just the sort of major work that will grace the shelves of an astronomy library for many decades to come.” (David W. Hughes, The Observatory, Vol. 39 (1273), December, 2019)

• Foreword.- Preface.- The World of Jupiter, English Translation of Mundus Iovialis.- Concerning the Biography of Simon Marius.- Hans Philip Fuchs von Bimbach (c. 1567–1626), Patron of Simon Marius.- Georg Caesius as Appointed Court Astronomer of the Margrave Georg Friedrich of Brandenburg-Ansbach.- Simon Marius’s Mundus Iovialis and the Discovery of the Moons of Jupiter.- Simon Marius’s Reports on the Comets of 1596 and 1618, in the Context of the Comet Research of his Times.- Sunspot Observations by Simon Marius 1611 to 1619.- An Astronomer Too Excellent: Simon Marius, the Telescope, and the Problem of the Stars during the Copernican Revolution.- In the Turmoil of the Early 17th-century Cosmology Debate – Simon Marius as a Supporter of the Tychonic System.- Simon Marius as a Calendar Writer.- Simon Marius as a Tychonic Calendar Maker.- Simon Marius – Tabulae Directionum Novae – A first Approach.- Translating the Mundus Iovialis into German.- Prickard’s English Translation of Mundus Iovialis, Completed.- Priority, Reception and Rehabilitation of Simon Marius – From the Accusation of Plagiarism to the Marius Portal as his Virtual Collected Works.- A Word of Caution about the ‘Rehabilitation’ of Simon Marius.- The Marius Portal – Simon Marius as Digital Human in the 21st centrury.- The Franconian Asteroid 7984 Marius.- A Model of our Solar System on a Scale of 1 : 50 Billion.- “Sun, Moon and Marius” – An Exhibition with Pictures from the Art School “Obraz” in Protwino (Russia).- Simon Marius – Works.- The Life and Work of Simon Marius at a Glance.- About the Authors