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Parabolas
Every radio telescope has the same shape dish. This shape is called a paraboloid, a three dimensional shape formed by rotating a parabola around its axis of symmetry.
Spirals
There are galaxies out in space that look like spirals. In fact, our galaxy, the Milky Way has recently been shown to be a spiral galaxy.
Dealing with digital data
The Square Kilometre Array is going to collect mind-boggling amounts of information that needs to be stored and displayed accurately to be truly useful.
Big numbers
One thing that is always a part of astronomy and space is that the numbers involved are big -- really big!
