Astro Bob blog: Galaxies, galaxies and more galaxies - 225 billion and counting! Like a spinning hypnotic disk, who can't resist the spiral swirls of dust that draw your gaze to the core of galaxy NGC ...
If you are looking for a DIY project linked to hypnosis or optical illusions, this simple hypno wheel idea is for you! A hypno wheel, also called as hypno disc or hypnosis spiral, is a spinning spiral ...
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