DESCRIPTION
AstroGrav is a software program that allows you to study how astronomical objects move and interact under the force of gravity. It features superb interactive 3D graphics which allow you to move around within an astronomical system that you are viewing, 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 AstroGrav without having to go to the trouble of entering 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 can be used to visualize and understand the following aspects of gravitational and astronomical systems.
- Basic concepts of mass, position, velocity, acceleration, force, momentum, and energy.
- Kepler's Laws of Planetary Motion and Newton's Law of Universal Gravitation.
- Many body systems and the n-body problem.
- Orbits and Lagrange points.
- Interchange of potential energy and kinetic energy in gravitational systems.
- Projectiles and escape velocities.
- Gravitational slingshots used in space missions.
AstroGrav calculates how astronomical objects move according to Newton's Law of Universal 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 ideal for any of the following.
- Astronomers interested in studying the evolution of gravitational systems.
- Teachers and educationalists seeking to deliver courses on math, physics, or astronomy.
- Students of math, physics, or astronomy.
- Anyone else interested in studying how objects move and interact under the force of gravity.
WHAT'S NEW
Version 1.8:
- Added several new commands for manipulating model windows.
- Made several improvements to the handling of date and time units.
- Made several improvements to tool bars and added new tool palettes.
- Added new preference settings allowing you to specify the positions of tool bars and status bars.
- Significantly reduced the size of the Windows download.
- Improved the terminology used for the different types of windows.
- Added several different custom cursors that make navigation less error prone.
- Speeded up the graphics display in most cases.
- Various minor bug fixes and improvements.
- More details...
REQUIREMENTS
Mac OS X 10.4 or later.500MHz G3 or faster processor.
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