In the May 27 SN: Genetic intruders, seeing Chaco in a new light, an artificial womb, Mars’ origin revisited, domestication of the horse, glimpsing Earth’s glacial past, what’s in a fang blenny’s bite and more.
FAR OUT TRAPPIST-1h (outermost magenta line) orbits its star in about 19 days, new observations show. The orbits of the system’s other six planets are shown in red, orange, yellow, green, blue and purple.
FULL CIRCLE Saturn’s ring system is incredibly complex, as shown in this image taken by NASA’s Cassini spacecraft in 2013.
JPL-Caltech/NASA, Space Science Institute
TWO CASSINIS The Cassini spacecraft has become famous for its stunning views of Saturn, including this image of the unlit side of the rings taken in 2012. But what do we know about the man Cassini was named for?
New telescopes and spacecraft will soon help researchers scour our galaxy for signs of extraterrestrial life. But what might aliens look like? And if they do exist, why haven’t they returned our calls? These are just some of the questions addressed in the Science News special report “In Search of Aliens” (SN: 4/30/16, p. 24).