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-
- STAR TRAVELER
- Relativistic Star Travel Simulator
- by
- James Kent Blackburn
-
- Version 1.20
- This is a "FAT" release of Traveler
- Built using NeXTStep 3.2
-
- Introduction:
- Star Traveler is a simulator for space travel to the stars. It
- incorporates all the equations of special relativity to accurately account
- for the behavior of clocks and rulers that one would encounter on a voyage
- to the stars.
- One particularly useful academic application of this program is as a
- demonstration of the famous "Twin Paradox" from introductory special relativity
- lectures.
- The traveler in the simulation can control velocity and acceleration
- parameter for a journey to a nearby star and back to Earth where a comparison
- of the time lapse experienced by the traveler can be made with that on Earth.
- So, Einstein was right.
- Presently star systems can be generated randomly within the field of
- view. As an added bonus I have included actual positions of stars in the
- general direction of two constellations; Orion, and Ursa Minor. More may be
- added in a later version.
-
- Getting Started:
- To begin, the traveler should select a destination under the
- Constellation Menu. The current version only supports the constellations
- Orion and Ursa Minor. Hooks for future constellations are in the code for
- when the data becomes available. There is also a random selection under the
- Constellation Menu for generating a hypothetical star field. Using the slider
- controls under the field of view, determine what Acceleration and Terminal
- Speed are to be used during the voyage. Next determine the Time per Frame
- to be used in updating the star field of view. These controls can be
- dynamically adjusted during the journey. Now all the traveler need do is
- press the Engage button and set back and enjoy the ride. The present velocity
- and distance traveled from Earth as view on Earth are presented in the
- Velocity: and Distance: boxes At some point the traveler will want to return
- to Earth. This most easily accomplished by pressing the small "+" button next
- the the Acceleration. This determines the direction of the acceleration from
- the Star Drive engines. Upon returning to Earth the traveler experiences an
- abrupt stop from any speed to a complete rest. The traveler can then compare
- the time lapse on Earth in the Earth Time: box to that which he has
- experienced in the Proper Time: box. To reset all the parameters select Go to
- Earth in the menu. Now the traveler can pick a new destination and live a very
- long and prosperous relativistically enhanced live.
-
- Getting The Source Code:
- If you like Star Traveler and use it often, please make a small
- contribution to the cause. This will motivate me to continue development,
- add new features like extended star effects, red and blue wavelength shifts.
- I am making the Objective-C source code and all the PB/IB components available
- on 3.5 inch floppies. To receive a copy please send your name and address
- along with a certified check for $25 dollars for handling. I will send you
- the latest version of the source code and add you to an announcement list
- for future versions. You are free to use and or modify the source code to
- your hearts content. However, commercial distrubution is forbidden. There is
- no warranty or user support for Star Traveler. Comments are welcome.
-
- Author:
-
- James Kent Blackburn
- 14027 Vista Drive, #191-B
- Laurel, MD 20707-5889
-
- Internet: kent@kentaurus.gsfc.nasa.gov
-