... Dr Lanzerotti is an expert in solar and planetary geophysics and space plasma physics, and will be speaking about research using the NASA/ESA spacecraft Ulysses. ... Leonardo da Vinci, on the eye NEAF 2004 April 17, 18 The largest astronomy forum and astronomy equipment show in the Northeast, hosted by the Rockland (NY) Astronomy Club and Sky & Telescope, will take place in Suffern NY (about 2 hr drive from Princeton). See the website http://www.rocklandastronomy.com/neaf. ... Dark Skies! ...

... 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...