... IAU planet classification Observing with a Telescope Large Scale Structure The observables: Local Group (size 1 Mpc) Virgo cluster (size 2+ Mpc) Virgo supercluster (size ~33 Mpc) Voids (size ~ 10-150 Mpc), Walls and sheets, aka filaments (size ~ 50-80+ Mpc) 1 parsec The nearest star is 1.2 parsecs away (Proxima Centuri). ... Virgo supercluster Voids, Sheets Filaments The Virgo Cluster is a cluster of galaxies at a distance of about 18.0 Mpc away in the constellation Virgo. ...

... Articles | ... Forums . ... 230 deg . 49 deg . ... 130 deg . ... More Info . ... 210 deg . ... 168 deg . ... 249 deg . ... 195 deg . ... 271 deg . ... 110 deg . ... 338 deg . ... July 15 . 247 deg . ... 224 deg . ... 340 deg . ... July Phoenicids (PHE) . ... August 10 . 341 deg . ... 339 deg . ... 307 deg . ... 334 deg . ... 335 deg . ... 286 deg . ... 327 deg . ... 262 deg . ... 102 deg . ... 153 deg . ... 117 deg . ... December 2 . ... 123 deg . ... 100 deg . ... www.astronomy.net . ...

... Bad Astronomy . ... Bitesize Astronomy . ... The Nine Planets . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... The large blob near the top of the image is actually two stars orbiting one another. ... The interest has been generated by the point-like object below the binary stars. ... As theory goes, it is possible that planets around binary stars (or even systems with more than two stars) can be ejected from the system, literally thrown off to wander through space. ...

National Aeronautics and Space Administration . ... Albert Sacco, Jr. ... Payload Specialist . PERSONAL DATA: Born on May 3, 1949, in Boston, Massachusetts. ... EDUCATION: Graduated from Belmont Senior High School in 1968; received a bachelor of science degree in Chemical Engineering with honors from Northeastern University, Boston, Massachusetts, in 1973; was awarded a doctorate in Chemical Engineering from the Massachusetts Institute of Technology, Cambridge, Massachusetts, in 1977. ...

The Official Publication of the Amateur Astronomers Association of Princeton Director Bill Murray (609) 298-1179 strgazr@comcast.net Assistant Director John Church (609) 799-0723 j.church@mindspring.com Treasurer Michael Mitrano (609)-737-6518 michael.mitrano@att.net Program Chairman ... (609) 273-1456 (908) 859-1670 and (609) 448-8644 kane@princetonastronomy.org editors@princetonastronomy.org Volume 39 From the Director March ... Point your browser to http://www.princetonastronomy.org/ 2. ...

... 7 July 2012 amateur astronomers that day and I was one of them. Luckily I did see the 2004 transit and I think many of you did too. ... The emission spectrum of a heated body was presented in live a demonstration in which a long filament, approximately one foot President's Message As I write my first Presidents message we are coming fresh off the heels of one of the more interesting and rare astronomical events we all had a chance to see, the Venus transit of 2012. ... First and second clouds. ...

... Gaseous discs in NGC 252 and in NGC 4513 have decoupled kinematics, and the ionized gas of their rings is certainly excited by young stars. ... Two other, quite isolated S0 galaxies with the UV rings, IC 522 and NGC 446, demonstrate the shock-dominated gas excitation in the UV-detected rings, so their rings may probably have impact origin. ... NGC 4513. ... The UV rings in isolated galaxies IC 522 and NGC 446 may represent the consequences of central impact by a satellite from a highly inclined...

In 1978, a Foucault pendulum was installed in the Administration Building, now called Grawemeyer Hall, at the University of Louisville. ... The observed period of swing is 9.4 s, corresponding to a length of a simple pendulum of about 72.1 ft. ... Verne Baxter and Samuel Bell from the Department of Electrical Engineering would provide the circuitry and sensing apparatus to control the magnet which was needed to maintain the steady swing of the pendulum. ...