... This recently reintroduced area of research at the Observatory continues a tradition established at the Observatory by E.J. Opik , focusing on problems involving the origin and evolution of comets , their dynamical transfer from the Oort cloud and other reservoirs into short-period orbits , the interrelationship between comets and asteroids (particularly objects in Earth-crossing ... The first concerns the origin and evolution of the Oort cloud in the Galaxy. ...

The programming language FORTRAN is the principal language for scientific and technical computations. ... It has recently been carefully revised, resulting in a modern and powerful language, Fortran 90. The intent with this new standard is to make Fortran into a useful and efficient language for the scientific and technical computations also towards the end of this decade. ... This tutorial therefore contains an Appendix on the recent proposed addition to Fortran, High Performance Fortran. ...