It is noteworthy that, because the bead is a spheroid having rotation symmetry, it is difficult to detect the rotation if it rotates on its axis with no axial run out.
In Philolaus' system the central fire remains invisible because the earth orbits the central fire as it rotates on its axis, thus keeping one side of the earth always turned away from the central fire.
As seen relative to the fixed stars, it rotates on its axis exactly three times for every two revolutions it makes around the Sun.
The piece combines computer-aided design with real-time input from the public's movements, to inform its physical actions as it rotates on motors, augmenting the space with the enchanting hues and patterns of reflected light and spatialized sound.
The piece combines computer-aided design with real-time input from the public's movements, to inform its physical actions as it rotates on motors, augmenting the space with the enchanting hues and patterns of reflected light and spatialised sound.
But the lack of an internal heat source and the fact that it rotates on a tipped-over axis also gives us a unique opportunity to learn how a gas giant planet behaves when its energy balance is driven by the Sun.
Thayer reported that it rotated on the surface, "gradually [turning] her deck away from us, as though to hide from our sight the awful spectacle .
Give the roast a slight spin so that it rotates on the string.
The huge pile of basalt, formed initially at high latitude, caused Mars to tip over on its side, even as it continued rotating on the same axis with respect to its path through space.
Uranus was likely hit by a very large planetoid early in its history, causing it to rotate "on its side," 90 degrees away from its orbital motion.
