What to do
with GalaxSee once you have it installed on your computer!
GALAXSEE is a
scientific modeling (simulation) with visualization tools that allows students
to solve for the position and movement of masses under the influence of their
mutual gravitational attraction. Many systems in the universe can be described
as masses moving under the influence of their mutual gravitational attraction.
Stars in a galaxy are one such system and that is why this modeling simulation
is called GALAXSEE. Major planets and minor planets, asteroid and comets,
moving around their central star like our solar system is another system that
GALAXSEE can describe and allow students to be computational scientist.
Galaxies interacting with one another in clusters of galaxies are another place
in the universe that GALAXSEE describes. Because of the increased speed in
computers and because of their increase in memory many personal computers now
have the power that just a few years ago only research scientist at the most
elite universities had access to. GALAXSEE is very close to a real cutting edge
research tool. When used in an imaginative way it probably is capable of
publishable science in peer reviewed journals. The interface to the simulator
is sufficiently simple and the results of the calculation a visualization so
clear that middle school and above students should be able to use it. First in
guided activities and latter in real exploration to answer questions of their
own devising.
Every object in
GALAXSEE has a mass, a position (x-position, y-position, and z-position), and a
velocity (V-x direction, V-y direction, and V-z direction). GALAXSEE uses
Newtonian dynamics and the Newtonian universal law of gravity to evolve the
particle masses positions and velocities in time. The masses are displayed
moving in perspective as the positions and velocities of all the masses are
updated.
The initial
model may be created by using the program if it is a galaxy or by specifying
the mass, a position (x-position, y-position, and z-position), and a velocity
(V-x direction, V-y direction, and V-z direction) for each particle in a spread
sheet program on an ordinary text editor like notepad.
Open the
colliding-disk.gxy galaxies and run them for a few billion years (in simulated
time not real time) and watch them collide send me and e-mail about the
results. If you are sophistocated enclose the saved galaxy as an attachment and
tell me how many billion years you ran the simulaton by what Show info say for
time. You may need to increase the Star Size under View to see the red galaxies
stars, I needed to do this to see the red galaxy's stars.
GalaxSEE is an
experiment in education to see how to get regular Introductory Astronomy
Students to use GalaxSEE.