This figure shows that large-scale vortex rings are produced from the injector rim during combustion oscillations. Credit: Satomi Shima, Kosuke Nakamura, Hiroshi Gotoda, Yuya Ohmichi, and Shingo Matsuyama Rocket engines contain confined combustion systems, which are essentially combustion chambers. In these chambers, nonlinear interactions among turbulent fuel and oxidizer flows, […]

Ice receding from a glacier near Kangerlussuaq, Greenland. This photo was taken during a helicopter tour of the region with US Secretary of State Antony Blinken in May 2021. (Image credit: Saul Loeb/Pool/AFP via Getty Images.) Greenland’s enormous ice sheet has been struck by a “massive melting event,” with enough ice […]

Northrop Grumman’s Cygnus spacecraft atop the company’s Antares rocket lifts off Feb. 20, 2021, to deliver important science and cargo to the International Space Station on the company’s 15th commercial resupply services mission for NASA. Credits: NASA A research team at Oak Ridge National Laboratory have 3D printed a thermal […]

In 1916, Albert Einstein put the finishing touches on his Theory of General Relativity, a journey that began in 1905 with his attempts to reconcile Newton’s own theories of gravitation with the laws of electromagnetism. Once complete, Einstein’s theory provided a unified description of gravity as a geometric property of […]

Although cats have lived alongside humans for millennia, it remains a dogs’ world. This bias has historically bled into science as well. It’s time for cats to get their day, argues veterinary medicine expert Leslie Lyons in a Forum published on July 28, 2021, in the journal Trends in Genetics. Cats, […]

Male and female Polyommatus icarus mating. Credit: Stephanie A. Rivest This summer, if you see a butterfly with wings that are blue on top with orange spots underneath, you may have crossed paths with a male European Common Blue (or Polyommatus icarus), a newly introduced species in Canada. Could it be […]

Credit: Unsplash/CC0 Public Domain Greater buffer zones around bodies of water and more consistent enforcement of water protection regulations are needed to reduce agriculture-based pollution in the Western U.S., a recent review from Oregon State University found. Prior research has shown that agricultural pollution, both from croplands and rangelands, is the […]

Researchers have found a way to reduce earthquakes triggered by wastewater injection following oil and gas processes such as drilling and fracking. Credit: MIT Applied in the field, a new model reduced quakes from oil and gas processes; could help manage seismic events from carbon sequestration. When humans pump large […]