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For Real Things I Know: The solar system just got a whole lot smaller?

For Real Things I Know

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Wednesday, October 27, 2004

The solar system just got a whole lot smaller?

Is this article, Mysterious Moonscape Seen on Saturn's Titan, as significant as it appears to me or am I just imagining things?

"We've been saying that Titan was the solar system's last great mystery, and [now] the solar system has become a smaller place," said the Cassini imaging team's leader, Carolyn Porco of the Space Science Institute in Boulder, Colo. "But we are still mystified and not quite sure what we're looking at."
...
"The biggest surprise is the fact we're still not seeing craters or evidence of structures," said JPL's Torrence Johnson. The images suggested a smooth, perhaps flat, surface with light and dark patches.

The instruments suggested the patches were made of similar materials, perhaps from "some sort of a coating effect,"
...
"This is the first place we've looked at with atmosphere and precipitation," Johnson said in a telephone interview. "It's more like Earth."
...
But not that much like Earth: "There's sharp boundaries between the bright and dark regions, but there is no topography in our images," Porco said. "Everyhing could be perfectly flat. We just don't know."

Other images showed lines or streaks across flat surfaces that could be caused by wind or geologic forces, Porco said. "They could be cracks in bedrock ice," she added. "There's a pattern and a process going on."

Porco also said "the jury is out" on whether there are liquids on Titan's surface. Scientists had speculated that Titan might have lakes or oceans of liquid ethane, but Cassini found no evidence of either.

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