COMING INTO FOCUS Saturn shines in this Cassini image taken in October 2013. Even though the spacecraft is gone, scientists are still learning from its 13 years’ worth of data.
JPL-Caltech/NASA, SSI, Cornell Univ.
PRETTY PLANET One Strange Rock contains gorgeous images of Earth, such as these colorful hydrothermal fields in Dallol, Ethiopia.
Graham Booth/National Geographic
TOO BIG, TOO SOON Supermassive black holes that are actively feeding on gas and dust, like the one shown in this artist’s rendition, have been spotted in the early universe — before they should have had time to grow.