n.
http://en.wikipedia.org/wiki/Lund_Observatory
https://eee.uci.edu/clients/bjbecker/ExploringtheCosmos/week3a.html
Tycho points to the New Star; his motto, Non Haberi Sed Esse (To be present, but not seen) appears above his instruments
http://www.absoluteastronomy.com/topics/SN_1572
The appearance of the Milky Way supernova of 1572 was perhaps one of the two or three most important events in the history of astronomy.
http://apod.nasa.gov/apod/ap090317.html
2009 March 17 Tycho's Supernova Remnant
Credit: X-ray: NASA/CXC/SAO; Infrared: NASA/JPL-Caltech; Optical: MPIA, Calar Alto, O. Krause et al. Explanation: What star created this huge puffball? Pictured above is the best multi-wavelength image yet of Tycho's supernova remnant, the result of a stellar explosion first recorded over 400 years ago by the famous astronomer Tycho Brahe. The above image is a composite of an X-ray image taken by the orbiting Chandra X-ray Observatory, an infrared image taken by the orbiting Spitzer Space Telescope, and an optical image taken by the 3.5-meter Calar Alto telescope located in southern Spain. The expanding gas cloud is extremely hot, while slightly different expansion speeds have given the cloud a puffy appearance. Although the star that created SN 1572, is likely completely gone, a star dubbed Tycho G, too dim to be easily discerned here, is being studied as the possible companion. Finding progenitor remnants of Tycho's supernova is particularly important because the supernova was recently determined to be of Type Ia. The peak brightness of Type Ia supernovas is thought to be well understood, making them quite valuable in calibrating how our universe dims distant objects.
1. The act of impelling or the condition of being impelled: "I do not move . . . unless it be under the impulsion of a third party" (Samuel Beckett).
2. An impelling force; a thrust.
3. Motion produced by an impelling force; momentum.
4. A wish or urge from within; an impulse.
http://en.wikipedia.org/wiki/Charles_Messier
Charles Messier (26 June 1730 – 12 April 1817) was a French astronomer most notable for publishing an astronomical catalogue consisting of deep sky objects such as nebulae and star clusters that came to be known as the 103 "Messier objects". The purpose of the catalogue was to help astronomical observers, in particular comet hunters such as himself, distinguish between permanent and transient objects in the sky.
http://en.wikipedia.org/wiki/Messier_object
http://en.wikipedia.org/wiki/Messier_101
http://www.astro.lu.se/Tycho.html
NON HABERI SED ESSE
The last lines are a motto of Tycho, probably hinting at the idea, that one should be mild in manners but strong in reason.
http://en.wikipedia.org/wiki/Charles_Messier
Charles Messier (26 June 1730 – 12 April 1817) was a French astronomer most notable for publishing an astronomical catalogue consisting of deep sky objects such as nebulae and star clusters that came to be known as the 103 "Messier objects". The purpose of the catalogue was to help astronomical observers, in particular comet hunters such as himself, distinguish between permanent and transient objects in the sky.
http://en.wikipedia.org/wiki/Messier_object
http://en.wikipedia.org/wiki/Messier_101
http://www.astro.lu.se/Tycho.html
NON HABERI SED ESSE
The last lines are a motto of Tycho, probably hinting at the idea, that one should be mild in manners but strong in reason.
http://en.wikipedia.org/wiki/Lund_Observatory
https://eee.uci.edu/clients/bjbecker/ExploringtheCosmos/week3a.html
Tycho points to the New Star; his motto, Non Haberi Sed Esse (To be present, but not seen) appears above his instruments
http://www.absoluteastronomy.com/topics/SN_1572
The appearance of the Milky Way supernova of 1572 was perhaps one of the two or three most important events in the history of astronomy.
http://apod.nasa.gov/apod/ap090317.html
Credit: X-ray: NASA/CXC/SAO; Infrared: NASA/JPL-Caltech; Optical: MPIA, Calar Alto, O. Krause et al.
