Having all four of the Unit Telescopes (UTs) working as one telescope observing the same object was a major step in the development of the VLT. While mostly used for individual observations, the UTs were always designed to be able to operate together as part of the VLT Interferometer (VLTI).
When an angry dog is hot on your heels, your first thought is likely to get away as quickly as possible. However, over at Adventure Journal, Brendan Leonard explains that if you know you’re not getting away, the best way to get a dog to back down is to first stop running, and then, if the dog is still aggressive, flip out on it and bark it down.
Flying over Antarctica’s Pine Island Glacier in a DC-8 research plane, scientists participating in NASA’s IceBridge mission made a startling discovery on October 14: a massive crack running about 29 kilometers (18 miles) across the glacier’s floating tongue. The rift is 80 meters (260 feet) wide on average and 50 to 60 meters (165 to 195 feet) deep, and it marks the moment of creation for a new iceberg that will span about 880 square kilometers (340 square miles) once it breaks loose from the glacier.
In the search for extraterrestrial intelligence, astronomers have hunted for radio signals and ultra-short laser pulses. In a new paper, Avi Loeb (Harvard-Smithsonian Center for Astrophysics) and Edwin Turner (Princeton University) suggest a new technique for finding aliens: look for their city lights.