In the Nov. 25 SN: Charting lumpy space, Bronze Age movers and shakers, T. rex’s slasher arms, gene editor corrects typos, the Great Pyramid hides a void, mosses chronicle Arctic warming, an itty-bitty insect-inspired robot and more.
FOND FAREWELL The Cassini spacecraft took this last look at the Saturn system two days before plunging into the giant planet’s atmosphere.
JPL-Caltech/NASA, Space Science Institute
A WELCOME REPRIEVE Arecibo staff hold a Puerto Rican flag in front of the observatory’s main dish after Hurricane Maria. The observatory will remain open, the National Science Foundation announced November 16.
BLACK HOLE BOUNTY Gravitational waves have been spotted from two merging black holes (illustrated above), the fifth reported detection.
Mark Garlick/Science Photo Library/Alamy Stock Photo