In the Dec. 9 SN: Lessons from the Pliocene, searching for new ways to fight MS, a supernova on repeat, the great gene drive debate, spider sleep secrets, an ailing boy gets new skin, kleptopredation and more.
WORKING FOR PEANUTS NASA’s New Horizons spacecraft is racing toward a rock in the Kuiper Belt called MU69. Early reconnaissance suggests that the object might be shaped like a peanut (as seen in this artist’s illustration), or could be two separate bodies.
Alex Parker/SwRI, JHUAPL, NASA
HIDDEN DEPTHS Jupiter’s Great Red Spot (left in this image from NASA’s Juno spacecraft) extends down into the planet’s atmosphere at least 350 kilometers, as far as Juno can see.
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.