WHAT’S MY AGE AGAIN? The moon formed about 4.51 billion years ago, a new analysis of lunar rocks reveals.
DUCK! Blobs of gas roughly the mass of Jupiter (several illustrated) could form near the black hole at the center of the Milky Way and shoot into intergalactic space.
Mark A. Garlick/CfA
MISPLACED MATTER A search for dark matter by the XENON100 experiment has found nothing. Photomultiplier tubes within the detector, shown above, detect light produced in interactions possibly caused by dark matter particles.
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).