A “replica” sword that has been part of the collection at the Field Museum in Chicago for nearly a century is actually a 3,000-year-old artifact from the Bronze Age. Curators made the shocking discovery while preparing for an upcoming exhibition called “First Kings of Europe.” The 3-foot-long (91 centimeters) bronze sword had been in storage … Read more
Young stars are surrounded by chaos: Clouds of gas, dust and ice swirl about in a so-called protoplanetary disk. And when gravity binds this material together, planets are born. Using the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile, researchers developed a new technique to measure and date infant exoplanets forming in these protoplanetary disks. By … Read more
Dust collected from the surface of an ancient, peanut-shaped and “potentially-hazardous” asteroid has revealed that some space rocks are much bouncier and harder to destroy than first thought — posing concerns about Earth’s long-term safety. The analysis of three tiny dust particles — gathered from the surface of the 1640-foot-long (500 meters) rubble pile asteroid … Read more
Are aliens using a quirk of the sun’s gravity to transmit information through an interstellar communication network? For the first time ever, astronomers explored this intriguing possibility and scanned for signals coming from hidden nonhuman probes orbiting the sun. So far, the method hasn’t turned up signs of spacefaring aliens, but it represents a promising … Read more
Once life gains even the tiniest foothold on a planet, it may have the power to transform that world, forcing us to broaden our definition of “habitable,” new research suggests. We don’t really know where life might arise. We have only one example of a life-hosting planet, Earth, which started to get interesting perhaps only … Read more
An elusive object in space has posed a riddle for scientists. It looks like a black hole. It acts like a black hole. It may even smell like a black hole. But it has one crucial difference: It has no event horizon, meaning that you can escape its gravitational clutches if you try hard enough. … Read more
Scientists have uncovered a mysterious network of brain connections that is linked to several psychiatric disorders, including schizophrenia, depression and obsessive-compulsive disorder (OCD). This shared brain circuitry could help reveal why many patients who are diagnosed with one psychiatric illness also meet the criteria for a second. “Half of the people we treat meet criteria … Read more
Astronomers have uncovered more than 400 previously hidden black holes feeding on stars and dust in the center of galaxies. It appears that many of the new black holes, discovered using NASA’s Chandra X-ray Observatory, remained unknown until now because they are buried beneath cocoons of dust. Supermassive black holes, which can be millions of … Read more
After being fed through the jugular vein, a tiny, “thought-controlled” device can record brain activity from a nearby blood vessel, thus eliminating the need for doctors to crack open the skull, a small trial shows. The device, called Stentrode, is designed to let people with paralysis operate assistive technologies using only their thoughts. For example, … Read more
Geologists in northern Guatemala have discovered a massive Maya site that stretches approximately 650 square miles (1,700 square kilometers) and dates to the Middle and Late Preclassic period (roughly 1000 B.C. to 250 B.C.). The findings were the result of an aerial survey that researchers conducted via airplane using lidar (light detection and ranging), in … Read more
