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What
do you get when you cross a yo-yo with juggling
balls?
The answer of course is Astrojax! This is
a fairly new breed of toy as compared to the
likes of diabolo or juggling balls which have
been around for many hundreds of years. Every
day Astrojax players around the world are
discovering new tricks and exciting moves
that were previously thought impossible. Astrojax
is simply 3 weighted balls attached by a piece
of string with the middle ball freely moving.
The construction of an actual Astrojax is
however fairly complex as each ball has a
precision machined metal weight in order to
provide maximum performance and smooth action
whilst playing. |

How to get started
| Safety |
Never play with astrojax near
people or objects as these balls can really
hurt if they hit you! |
| Start |
Hold an end ball in each hand. Drop one
ball and smoothly tug the ball in your hand
rhythmically up and down to continue the motion. |

First Two Tricks
| Vertical
orbit |
Do the start move (see above), and
just keep going! |
| Horizontal Orbit |
Use soft circular horizontal movements of
the hand which contains the ball. |

3 types of Astrojax trick
As an astrojax performer, there is
3 types of Astrojax trick that you may want to specialise
in, or learn a bit of each. The choice is yours!
I offer a quick description and some hints, but
to find out more and to see excellent video clips,
then please visit the best Astrojax website on the
planet - www.astrojax.com
!!
| Juggling |
Tug a bit harder on the balls
so the far one comes up to hand height.
Every time a ball comes up to this height,
let go of the ball in your hand and grab
that one! Keep going and you will soon get
the hang of it. Important to practice this
trick so it is smooth before you try and
impress people with it! If you get good
at this, then please note that the Guiness
World Record is 3,208 consecutive catches
by Maximilion Leidolf of Germany in 24mins
52secs on 12 February 2000!
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| Rebound Tricks |
Try bouncing a ball off the floor,
or kicking a ball lightly. Important to keep
the pattern looking smooth. |
| String
tricks |
Wrapping the astrojax around
various body parts. You may be able to let go
of the string temporarily and catch it again
once it has swung round the finger, leg etc.
This is probably the most advanced of the 3
different kinds of Astrojax tricks! |
SCIENCE BEHIND WHY ASTROJAX WORKS:
Astrojax is a fascinating new toy
illustrating a wide variety of basic science principles.
ROTATIONAL DYNAMICS:
A metal weight concentrates the mass at the centre
of the middle ball. This allows the middle ball
to spin rapidly. An ice skater uses this principle
when he brings in his arms during a twirl to spin
faster.
PLANETARY/ORBITAL MOTION: During
vertical orbits the outer ball orbits around the
middle ball. During horizontal orbits, both balls
orbit in perfect circles. Our earth orbits around
the sun and our moon orbits around the earth in
ellipses which are not quite circular, but pretty
close!
HISTORY OF THE ASTROJAX
Astrojax was invented by the American
physicist Larry Shaw who discovered the basic principles
(see science bit above) while still at Graduate
school. He was excited and very interested in all
the complex patterns that this simple arrangement
created and so he took time to work on the idea.
It took nearly 2 years and hundreds of prototypes
before Larry Shaw had his idea patented and the
rest is HISTORY!