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A new search for the elusive Planet Nine has once again yielded nary a sniff of a sneaky outer Solar System body.

A theorized huge, ninth planet beyond the orbit of Neptune once again wasn't found in a new survey of the solar system's outer reaches.

An updated search for primordial gravitational waves has not found a signal, which implies that some popular early Universe models are becoming less viable.

These Materials Could Make Science Fiction a Reality Metamaterials, which could improve smartphones and change how we use other technology, allow scientists to control light waves in new ways. Credit...James Yang This article is part of our new series, , which examines how rapid advances in technology are transforming our lives. Imagine operating a computer by moving your hands in the air as Tony Stark does in “Iron Man.” Or using a smartphone to magnify an object as does the device that Harrison Ford’s character uses in “Blade Runner.” Or a next-generation video meeting where augm...

Written by AZoMFeb 18 2021 The electromagnetic echo of the Big Bang, called the cosmic microwave background (CMB), is a kind of radiation that has been moving through time and space ever since the birth of the very first atoms around 380,000 years after the evolution of the universe. Left: One of the lenses developed by McMahon’s team is installed in a camera assembly. Top right: This shows a close-up view of the stepped pyramid metamaterial structure responsible for the lens’ antireflective properties. Bottom right: Members of the McMahon lab stand by recently fabricated silicon lenses. ...