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Titan map

NORTHERN LAKES  Radar images of Titan’s poles show lakes that may form like Earth’s sinkholes. A new topographic map suggests these hydrocarbon lakes may be connected through Titan’s equivalent of groundwater.

Saturn’s rings

BLOCKING THE SUN  Saturn’s rings cast a shadow on the gas giant’s charged upper atmosphere, blocking ionizing rays as well as visible light.    

Hunga Tonga-Hunga Ha’apai

BABY PICS  Scientists are keeping an eye on the rates of erosion of volcanic ash on Earth’s newest island, called Hunga Tonga-Hunga Ha’apai.

marsupial lion illustration

NEW MARSUPIAL LION  A newly named species of extinct marsupial lion (illustrated) was dog-sized but probably as fierce as anything in its forest. 



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