Mercury Passing Before the Sun

Mercury Passing Before the Sun (' or Mercurio (che) passa davanti al sole""') is the title of a series of paintings by Italian Futurist painter Giacomo Balla, depicting the November 17, 1914 transit of Mercury across the face of the Sun.
Balla, an amateur astronomer, observed the transit through a telescope likely outfitted with a smoked glass filter. His composition, according to daughter Elica Balla, depicts two intersecting views of the event, through the telescope and with the naked eye. Green and white triangles in the painting represent glare and other optical effects observed by Balla. In several versions of the painting, overlapping spirals, suggestive of the telescope body, emanate from the golden-orange orb of the magnified and filtered Sun; these encounter the brilliant white star in the upper left—the Sun as seen with the naked eye.
The painting represents Balla's subjective experience of the event. It exemplifies his transition to a more abstract style, as well as his interest in themes of cosmogony; he uses the opacity of gouache to suggest a dense fusion of cosmic forces. During this period, Balla had begun to experiment with the use of geometric and curving forms and transparent planes to convey movement. "Mercury Passing Before the Sun" translates the temporal progression of Mercury's transition into a spatial progression, using methods devised by the Cubists.
Versions.
Balla created at least a dozen versions and studies of the painting; the version in tempera, now in the Peggy Guggenheim Collection in Venice, is considered by that gallery to be the "definitive outcome" of these studies. Other versions include: