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220,714 articles from PhysOrg

Ingenuity Mars helicopter completes first one-way trip

NASA's Ingenuity Mars Helicopter completed its fifth flight on the Red Planet today with its first one-way journey from Wright Brothers Field to an airfield 423 feet (129 meters) to the south. After arrival above its new airfield, Ingenuity climbed to an altitude record of 33 feet (10 meters) and captured high-resolution color images of its new neighborhood before touching down.


FRIDAY 7. MAY 2021


Massive molecular study uncovers clues to the evolution and diversification of essential plant family

The most comprehensive study of the family tree for legumes, the plant family that includes beans, soybeans, peanuts, and many other economically important crop plants, reveals a history of whole-genome duplications. The study also helps to uncover the evolution of genes involved in nitrogen fixation—a key trait likely important in the evolutionary spread and diversification of legumes and vital...

Study describes new mechanism for terminating transcription of DNA into RNA in bacteria

A bacterial protein helps to stop transcription—the process of making RNA copies of DNA to carry out the functions of the cell—by causing the cellular machinery that transcribes the DNA to pause at the appropriate spots in the genome. The protein, known as NusG, pauses the transcription machinery at specific DNA sequences to facilitate what is called "intrinsic termination" and prevent...

Soybean and linseed oils added to cows' diet improves the quality of milk

Inclusion of soybean and linseed oils in the diet of dairy cows made the fatty acid content of their milk even healthier for human nutrition. It also increased the proportions of omega-6 and omega-3, which in the right balance play a key role in preventing cardiovascular diseases, for example, as well as chronic inflammation and some kinds of cancer.

Perseverance Mars rover captures video, audio of fourth Ingenuity flight

For the first time, a spacecraft on another planet has recorded the sounds of a separate spacecraft. NASA's Perseverance Mars rover used one of its two microphones to listen as the Ingenuity helicopter flew for the fourth time on April 30, 2021. A new video combines footage of the solar-powered helicopter taken by Perseverance's Mastcam-Z imager with audio from a microphone belonging to the...

Discovery of huge Raman scattering at atomic point contact

Nanofabrication of electronic devices has reached a single nanometer scale (10-9 m). The rapid advancement of nanoscience and nanotechnology now requires atomic-scale optical spectroscopy in order to characterize atomistic structures that will affect the properties and functions of the electronic devices.