The scientists detailed their findings online Aug. Indeed, the researchers noted that NASA's Cassini spacecraft found that both Prometheus and Pandora had dense cores. 3 The modern Sun symbol, a circle with a dot (), first appeared in Europe in the Renaissance. Cassini’s instruments studied Phoebe and sent stunning images back to Earth, transforming it from a remote and vague speck into a place in its own right a new world more than 130 miles (210 kilometers) wide. The European Space Agencys (ESA) Huygens probe. As Cassini entered the realm of Saturn, the spacecraft passed within 1,300 miles (2,100 kilometers) of Phoebe on June 11. The forms of the symbols that appear in the original papyrus texts of Greek horoscopes are a circle with one ray () for the Sun and a crescent for the Moon. 14), humanity got its first up-close look at a bizarre, frigid moon that may be capable of supporting life as we know it. This is a close match to what astronomers see with the F ring and its shepherd moons. The use of astronomical symbols for the Sun and Moon dates to antiquity. The Saturn system teems with natural satellites, from planet-sized Titan to small oddballs, shaped like potatoes or ravioli. This would result in not only a ring but also two remnant moons with about half of the mass of the originals. The mystery behind the origin of what may be Saturns oddest ring and its two companion moons may finally be solved: They came from an ancient, catastrophic collision, researchers say. However, if the moonlets had denser cores made up of rocks or large chunks of ice, they might not have completely destroyed each other. Written and fact-checked by The Editors of Encyclopaedia Britannica. The researchers found that if colliding moonlets were made up entirely of small, icy particles, these piles of rubble would have completely disintegrated after collisions, resulting in only a ring. (Image credit: NASA/JPL/Space Science Institute) Saturn's moon Epimetheus, which orbits beyond the F ring, appears at bottom. This Cassini photo of Saturn's rings shows the F ring and its two shepherd moons (left) as they appear alongside the rest of the planet's ring system.
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