Astronomy Stuff

VERY good free Software:

XEphem (Linux - Solaris - OS X - FreeBSD: I have all the catalogs!)
Cartes du Ciel - Sky Charts (Windows, Linux version in alpha version)


NBODY:

This is a collection of programs for gravitational simulation of the n-body problem (i.e., gravitational evolution of n point masses under given initial conditions), and the central (restricted) (n+N)-body problem. I made them in C++ with a TCL graphical interface, so they work under Unix and Linux. Here you have a precompiled RPM binary (RedHat Linux 9.0). Please contact me if you want the source codes.

Nbody can be used in Windows OS using Cygwin but, please, don't ask me to help you with this since I don't do Windows.


Some Astronomy History
Galileo saw Neptune: Postcript files

Image links:


Spacetime Warpers: Prime Suspects
Latest HST Pictures
STScI/HST Pictures
NASA K-12: Live from the Hubble
SOHO Database
JPL image archive
Constellations and Stars
Java Sky Chart