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News | Archive (3 August 2007)
Possible origin of Saturn's mysterious G ring
— 12:10 GMT | AstronomyWith data from the Cassini spacecraft, an international team of scientists may have identified the source of one of Saturn's more mysterious rings. The enigmatic G ring is likely produced by relatively large, icy particles that reside within a bright arc on the ring's inner edge. The particles are confined within the arc by gravitational effects from Saturn's moon Mimas. Micrometeoroids, tiny meteoroids or particles of dust that pervade space, collide with the icy particles, releasing smaller, dust-sized particles that brighten the arc. Plasma, an extremely variable gas made up of charged particles but electrically neutral, pervades the giant planet's magnetic field. It sweeps through this arc continuously, dragging out the fine particles, which create the G ring…
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Cornell patents a pink lily look-alike that blooms all summer
An inconvenient galaxy