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AstroGrav (Mac) 2.0.2
Software to simulate how objects move and interact under the force of gravity.
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Review AstroGrav is an astronomy software program that allows you to simulate how astronomical objects move and interact under the force of gravity. It features superb interactive 3D graphics which allow you to move around within a many-body astronomical system, while watching how it evolves with the passage of time. A wide variety of sample files are provided, including Solar System, space mission, and abstract systems, and these enable you to experiment with the astronomy software without having to enter your own data. The comprehensive editing facilities allow you to either create your own astronomical systems, or to modify existing ones, and provide you with an almost endless scope for experimentation and investigation. AstroGrav calculates how astronomical objects move according to Newton's Law of Gravitation, and displays the results as they are calculated so that you can watch the system evolve as in a movie. AstroGrav is very accurate, dynamically calculates orbits as a system evolves, deals correctly with object collisions, and can cope simultaneously with objects on many different timescales. AstroGrav is available for both Mac and Windows, comes complete with a tutorial and full documentation, and you can download a fully functional 15 day trial version for evaluation. |
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Changelog: Version: 2.0.2(21 Dec 2012) Made many improvements to view windows, particularly to the display of ecliptic grids and equatorial grids. Made improvements to the asteroid and comet tables that are displayed with the 'Edit / Import...' command. Added the 'Tau Ceti' sample simulation. Various minor bug fixes and improvements. Version: 2.0(06 Aug 2012) Added a completely new evolution algorithm that is much more accurate than the evolution algorithm used in previous versions, and which contains several new settings. Added a large number of new commands, particularly in solar system simulations. Various minor bug fixes and improvements. Version: 1.9.4(10 Dec 2011) Added the 'View/Show/Barycenter' and 'View/Show/Grayscale' commands. Made several improvements to the sample simulations. Corrected a fault that caused 'Evolve/Evolve To...' to evolve to the wrong time when the time step was changed during evolution. Various minor bug fixes and improvements. Version: 1.9.3(23 Oct 2011) Changed the 'Units' and 'Notes' windows so that they can be left open indefinitely. Made several improvements to the sample simulations. Corrected a fault that could cause the significant digits of position and speed quantities to get reduced to 4. Various minor bug fixes and improvements. Version: 1.9.2(02 Jul 2011) Added the display of a viewpoint's (x, y, z) coordinates to the status bar of a view window. Corrected a fault that could cause angles to be incorrectly formatted. Corrected a fault that prevented the 'File/Import...' and 'Edit/Paste' commands from working. Various minor bug fixes and improvements. Version: 1.9.1(31 Mar 2011) Corrected a serious fault that made version 1.9 unusable for a small proportion of users. Added the symbols for elements (a, e, i, omega, etc) to the appropriate windows. Added separators to the lists of units in popup menus to separate units into groups. Various minor bug fixes and improvements. Version: 1.9(17 Mar 2011) Made several corrections to minor faults in the evolution algorithm, and improved performance by about 15 percent. Made many improvements to the sample simulations. Made many improvements to the way units are handled. Corrected a fault with table sorting. Various minor bug fixes and improvements. Version: 1.8.4(29 Oct 2010) Many improvements to the sample simulations. Added a 'beep when finished' checkbox to the 'Evolve/Evolve To...' dialog. Corrected faults when displaying highly eccentric orbits. Improved the algorithm used to calculate the magnitude of a non-luminous body. Various minor bug fixes and improvements. Version: 1.8.3(01 Sep 2010) Changed the way that columns are shown and hidden in a table. Added a new sample simulation illustrating the system of exoplanets orbiting the star HD 10180. Corrected a fault that could cause AstroGrav to crash on computers with Intel Core i7 processors. Various minor bug fixes and improvements. Version: 1.8.2(10 May 2010) Greatly improved the way that orbits are calculated. Improved the handling of units by allowing the easy definition and use of a default selection of units. Made several improvements and corrections to the sample simulations. Various minor bug fixes and improvements. Version: 1.8.1(17 Dec 2009) Speeded up displays of table and view windows. Ensured that a tool palette remains on screen when its owning window is moved, resized, or maximized. Added recent discoveries to the Solar System sample simulations and changed their start date to 01/01/2010. Various minor bug fixes and improvements. Version: 1.8(21 Oct 2009) Added several new commands for manipulating model windows. Made improvements to the handling of date and time units. Made improvements to tool bars and added new tool palettes. Added new preferences for specifying the positions of tool bars and status bars. Various minor bug fixes and improvements. Version: 1.7.2(12 Jun 2009) Added a facility to save and restore family patterns in the 'Edit/New Family...' command. Added two new sample simulations. Corrected a fault that made selecting a large number of objects take too long. Corrected the 'Evolve/Run Backward' keyboard shortcut. Various minor bug fixes and improvements. Version: 1.7.1(08 May 2009) Added an object's speed to its label when selected on a model window. Added an object's speed and magnitude to its information popup. Added a preview panel to the color chooser. Corrected a fault that could cause unwanted gaps in some lines on model windows. Various minor bug fixes and improvements. Version: 1.7(03 Feb 2009) Added facilities for selecting multiple objects. Added commands to cut, copy, and paste selections. Improved the commands for deleting and merging objects. Simplified the addition of new objects. Added a new 'Type' field to the physical elements of objects. Various minor bug fixes and improvements. Version: 1.6.3(04 Nov 2008) Improved the 'Edit / Find...' command. Added the 'View / Show / Data' command. Corrected a fault that could cause valid '.ast' files to be rejected. Added recent updates to the Solar System sample simulations and changed their start date to 01/01/2009. Various minor bug fixes and improvements. Version: 1.6.2(05 Sep 2008) Improved the way that evolution is indicated on the status line. Corrected a fault that could cause part of an orbit to be drawn incorrectly. Corrected a fault in the calculation of object magnitudes. Significantly speeded up the drawing of model windows. Various minor bug fixes and improvements. Version: 1.6.1(14 Apr 2008) Improved the 'Edit / Add Family...' command. Corrected a bug that could cause object collisions to sometimes not work correctly. Improved number displays. Corrected a bug that caused the horizontal scroll bar to never appear on new tables. Various minor bug fixes and improvements. Version: 1.6(14 Jan 2008) Added 13 new keyboard commands for adjusting magnification and brightness and for controlling simulation evolution in full screen mode. Improved the 'Edit/Find...' command. Added the 'Help / Enter License...' command to allow easier license entry. Various minor bug fixes and improvements. Version: 1.4.3(03 Sep 2007) Positioned sample simulation windows to make better use of larger monitor resolutions. Corrected a bug that caused the wrong time unit to be used in some situations. Slightly speeded up simulation evolution. Julian dates are now displayed without exponents. Various minor bug fixes and improvements. Version: 1.4.1(03 Apr 2007) Speeded up the graphics drawing on model windows. Added the 'STEREO' spacecraft sample simulation. Corrected colors of major Solar System objects in the sample simulations. Model window duplication when a simulation is evolving now works correctly. Various minor bug fixes and improvements. Version: 1.4.0(27 Feb 2007) Added Dutch, French, German, Italian, Portuguese, and Spanish localizations. Corrected a fault that could cause navigation commands to function incorrectly during evolution. File dialogs now keep track of the last used folder. Speeded up table displays. Various minor bug fixes and improvements. Version: 1.3.6(10 Jan 2007) Made the fields on a detail window much easier to read and copyable. Added a 'Model Navigation' item to the main popup menus. Added Comet McNaught (C/2006 P1) to the 'Solar System' and 'Planets, Comets' simulations. Added the 'New Horizons' simulation. Various minor bug fixes and improvements. Version: 1.3.3 Tags: | Universal | Math | Program | Visualize |
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(AstroG.dmg - 9.58 MB)
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