Tech Updates

The idea of weapons in space, once a plot of science fiction, became a reality Monday (Sept. 14), when U.S. Air Force Secretary Troy Meink revealed at the Air, Space and Cyber Conference in Maryland that the United States had deployed “on-orbit space control weapons capable of defending the Joint Force against hostile adversary action.” […]

In 2004, two mathematicians hypothesized a powerful kind of sandwich. They were studying graphs, which are collections of points (called vertices) and lines (called edges). Graphs might represent anything from social groups to the internet to neurons in the brain. The mathematicians hoped to understand properties of one type of graph — a type that’s

Burning up As the planet warms, our environment will be transformed, but so will our bodies. In this series, ‘Burning up,’ we investigate the health impacts of climate change, focusing on heat, air quality, food and infection risk. In this installment, we evaluate the promising solutions that could help us adapt to our warmer future

A picture of a distant, shark-shaped cloud of gas in space has earned the top prize in a Royal Observatory Greenwich contest for amateur space photographers. Dubbed “The Quiet Predator,” the image by skywatcher Ali Alobaidly shows off the Shark Nebula (LDN 1235), which is roughly 650 light-years from Earth in the constellation Cepheus (the