Orbit

<BODY BGCOLOR="#FFFFFF"> <BLOCKQUOTE><CENTER><FONT SIZE="+3" FACE="Arial">Orbit : Home</FONT></CENTER> <P><FONT SIZE="-1" FACE="Arial">Orbit is a free, open source program, by Aaron Golden, which simulates and displays the motion of bodies in space according to Newton's Laws.</FONT></P> <P><FONT SIZE="-1" FACE="Arial">There are currently two versions of the program. Orbit v1.3.4 is a two dimensional simulator which runs under Mac OS 7.5 or higher (under Classic on machines with OS X). Orbit3d v1.0 is a three dimensional simulation written with Cocoa and OpenGL for OS X.</FONT></P> <P><FONT SIZE="-1" FACE="Arial">Users can design their own solar systems to simulate with either Orbit v1.3.4 or Orbit3d v1.0. Orbit3d v1.0 includes solar system editing tools whereas Orbit v1.3.4 does not. (To edit systems for Orbit v1.3.4 the user must use a text editor and a simple scripting language.)</FONT></P> <P><FONT SIZE="-1" FACE="Arial">Both programs are fully documented. Orbit3d can be used to run and edit solar system files from Orbit v1.3.4 but Orbit v1.3.4 may not be able to interpret all Orbit3d files.</FONT></P> <P> </P> <P><FONT SIZE="-1" FACE="Arial">The latest versions of both programs are available for download:</FONT></P></BLOCKQUOTE> <P><FONT SIZE="-1" FACE="Arial"><TABLE BORDER=0> <TR> <TD VALIGN=top ROWSPAN=2> <P><A HREF="http://homepage.mac.com/aegolden/.cv/aegolden/Public/Orbit3d%201.0.sit-binhex.hqx"><FONT SIZE="-1" FACE="Courier">Download Orbit3d v1.0</FONT></A><FONT SIZE="-1" FACE="Courier"><BR> Requires Mac OS X</FONT></P> </TD> <TD VALIGN=top ROWSPAN=2> <P><A HREF="http://homepage.mac.com/aegolden/.cv/aegolden/Public/Orbit%201.3.4.sit-binhex.hqx"><FONT SIZE="-1" FACE="Courier">Download Orbit v1.3.4</FONT></A><FONT SIZE="-1" FACE="Courier"><BR> Requires Mac OS 7.5 or higher</FONT></P> </TD> </TR> <TR></TR> </TABLE> </FONT></P> </BODY>