... The observing season of Jupiter's Galilean satellites (Io, Europa, Ganymede and Callisto) occultations start in Ireland on the 24th of July and end on the 11th of November. The occultations are seen from Earth only once every six years. ... See the page dedicated to the observers who never made such observations. ... I mage: the famous dark spot discovery photo by Anthony Wesley, taken on 19 July 2009 from Australia . ... International Year of Astronomy, Ireland National Node . ...

Fortran is a simple language . Fortran has always existed . Fortran compilers are generally available . Earlier the first programming language . ... Good at numerical analysis and technical calculations . ... A large number of programs and routines in Fortran are exchanged internationally . ... Fortran doesn't have reserved words, it has short identifiers, the identifiers do not have to be specified . ... Fortran programs are usually less well structured then Pascal programs . ...