Space

Oh how cute! Saturn just made an itty-biddy baby moon (named “Peggy”)

Saturn has more than 60 moons and researchers said yesterday that they think they may have captured a photo of Saturn giving birth to another itty-biddy moon (which they named "Peggy"). NASA’s Cassini space probe took the picture in April 2013 which shows a bright arc about 750 miles wide at the edge of Saturn’s outermost ring (see bottom left-hand side of picture above). Scientists think the arc and strange bumps located near it were probably created by the gravity of a small, icy object – possibly a newborn moon. Scientists think that most of Saturn’s moons are made of ice that broke out of Saturn’s rings (which are also made mostly of water ice) when the rings were much, much bigger.
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Space

NASA’s Cassini spacecraft provides evidence of an ocean of water underneath Saturn’s moon

Scientists had long thought that Saturn’s moon Enceladus had an ocean of liquid water underneath its thick, icy surface (in 2004, NASA scientists saw water vapor and ice spewing from vents near the moon’s south pole). Today. NASA’s Cassini spacecraft revealed actual evidence that their theory was correct – an ocean lies hidden inside the moon. NASA scientists discovered the evidence by deducing gravity variations using the Doppler Effect (the same principle used in our earthly radar systems). NASA’s Jet Propulsion Laboratory explained: “As the spacecraft flies by Enceladus, its velocity is perturbed by an amount that depends on variations in the gravity field that we’re trying to measure. We see the change in velocity as a change in radio frequency, received at our ground…
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