... The spectrum of the brightest star, our Sun, shows several dark gaps perpendicular to the flow of it’s colours (figure 1). These so called spectral absorption lines where discovered in 1802 by the English scientist William Wollaston. ... Some stars as Pollux show a spectrum similar to that of our sun with strong Ca II and Fe II lines, others as Sirius or Vega show strong absorption lines of hydrogen, others, as Mira show very complicated spectra due to molecular absorption lines (see figure 5). ...

... Breakout , which will only work on web browsers with JavaScript and Dynamic HTML. ... vidgame , a simple, addictive, Tcl/Tk game. My second computer was an Atari 800, with 48K of Ram. ... Holme's Atari 8bit Games . ... I also have some Atari Lynxes that are quite a bit of fun to play with. ... Kurt Olsen's Lynx Page . ... Some games for the Lynx . The Colossal Cave Adventure Page . ... The same guy also has a strawberry pop-tart-blow-torch on his web page. ... Urban Legends Reference Page . ...

... The host galaxies of low-z quasars . ... High-redshift quasars. Motivation: host galaxies and quasar evolution . ... The estimated galaxy luminosities are consistent with the values obtained for low- z quasars of the same luminosity. quasars, host galaxies . ... Conversely, quasar surveys provide an easy method of locating galaxies at large redshifts, so knowledge of the properties of quasar hosts offers a means of investigating the history and evolution of galaxies themselves. ...

. Authors . Problem . Method . Advises . Contact Analysis of an accuracy of CCD asteroid observations carried out by professional and amateur astronomers . An accuracy estimation of CCD asteroid observations contained in the Minor Planet Center Database and carried out in the years 1999 - 2006 is realized. About 20 millions individual positions of the Numbered and Unnumbered Minor Planets were tested by means of calculations of (O-C) residuals to derive "mean error of a single observation" for more than 400