ARCA Space Corporation has announced its linear aerospike engine is ready to start ground tests as the company moves towards installing the engine in its Demonstrator 3 rocket. Designed to power the world’s first operational Single-Stage-To-Orbit (SSTO) satellite launcher, the engine took only 60 days to complete from when fabrication began.
There’s not a whole lot to like about fillings, what with the prodding, scraping and jabbing and all. And that’s before the drill even comes out (followed by the bill at the end). Tending to our cavities might one day be a much more comfortable experience, with scientists discovering that a type of Alzheimer’s drug can actually stimulate stem cells within the tooth pulp to promote natural repair instead.
In 1996, scientists discovered what may be the strangest stone ever found, in an equally strange section of the Sahara desert that’s littered with unique yellow glass. Nicknamed the Hypatia stone, the relic was later found to be extraterrestrial in origin, but was unlike any known kind of meteorite or comet. A new study has deepened the mystery even further, finding that Hypatia could predate the formation of the Solar System, or have interstellar origins.
Jellyfish blooms are regarded by some as an ecological menace, but they may sound the dinner gong for the commercially valuable Norway lobster. Recently, a team of scientists from Heriot-Watt University in Edinburgh have photographed the tasty crustacean in the waters off western Norway chowing down on jellyfish carcasses, suggesting that they could form a major part of its diet.
The 25-cm (10-in) Norway lobster (Nephrops norvegicus), also known as the Dublin Bay prawn, langoustine, or scampi, is the most important commercial crustacean in Europe, responsible for revenues of £78 million (US$105 million) to Scotland alone. They’re remarkably abundant in the north-eastern Atlantic and parts of the Mediterranean, and they’re cheaper than the larger common lobster. Each year 60,000 tonnes of them are hauled in with half taken in British waters.
Currently, post traumatic stress disorder (PTSD) is usually treated with psychotherapy and antidepressants, but with the variability of the human mind those aren’t always effective. Now a study conducted at Wake Forest Baptist Medical Center has found that a novel form of treatment reduced symptoms of the disorder by effectively letting patients “hear” their own brainwaves.
In developing regions where lack of road infrastructure is problematic for those in the business of moving goods, drones are already having an impact. But also problematic is the fact that the people sending drones off to do the courier work kinda need them back again. A new cardboard drone being funded by DARPA won’t concern itself with such limitations, with the ability to deliver vital goods and disappear soon after the job is done.
NASA has ramped up its next phase of space exploration by green lighting further development of two unmanned mission concepts. Scheduled to launch sometime in the mid-2020s, the proposed missions include the Comet Astrobiology Exploration Sample Return (CAESAR) spacecraft, which is designed to bring back comet materials to Earth, and the Dragonfly dual quadcopter, which is designed to fly about in the atmosphere of Saturn’s largest moon, Titan.