Heavens

'Cannibalism' between stars

'Cannibalism' between stars

Stars are born inside a rotating cloud of interstellar gas and dust, which contracts to stellar densities thanks to its own gravity. Before finding itself on the star, however, most of the cloud lands onto a circumstellar disk forming around the star owing to conservation of angular momentum. The manner in which the material is transported through the disk onto the star, causing the star to grow in mass, has recently become a major research topic in astrophysics.

A violent wind blown from the heart of a galaxy tells the tale of a merger

A violent wind blown from the heart of a galaxy tells the tale of a merger

An international team led by a researcher from Hiroshima University has succeeded in revealing the detailed structure of a massive ionized gas outflow streaming from the starburst galaxy NGC 6240. The team used the Suprime-Cam mounted on the 8.2-meter Subaru Telescope on Maunakea in Hawaii.

Galactic center's gamma rays unlikely to originate from dark matter, evidence shows

Galactic center's gamma rays unlikely to originate from dark matter, evidence shows

Bursts of gamma rays from the center of our galaxy are not likely to be signals of dark matter but rather other astrophysical phenomena such as fast-rotating stars called millisecond pulsars, according to two new studies, one from a team based at Princeton University and the Massachusetts Institute of Technology and another based in the Netherlands.

Researchers propose high-efficiency wireless power transfer system

Researchers propose high-efficiency wireless power transfer system

Today, wireless power transfer (WPT) systems enable to charge electronic devices without plugging them into the wall, but rather by placing them on a special charging pad. However, the transfer distance and efficiency of such systems fall short of market expectations. In a new study, a group of scientists from ITMO University and Giricond Research Institute put forward a novel WPT system that can maintain up to 80% transfer efficiency across a distance of 20 centimeters. The results were experimentally tested with a light diode, which the scientists managed to turn on wirelessly.

Turbulent times: When stars approach

When we look at the night sky, we see stars as tiny points of light eking out a solitary existence at immense distances from Earth. But appearances are deceptive. More than half the stars we know of have a companion, a second nearby star that can have a major impact on their primary companions. The interplay within these so-called binary star systems is particularly intensive when the two stars involved are going through a phase in which they are surrounded by a common envelope consisting of hydrogen and helium.

Do venture capitalists matter?

Okay, entrepreneurs and venture capitalists, here are two words that can help your investment in a startup business succeed: direct flights.

A new study co-authored by an MIT professor shows that venture capitalists do help startup firms by closely monitoring their development, and that the availability of direct airplane flights between the two parties helps improve that oversight.

Chip enables navigation aids for the visually impaired

MIT researchers have developed a low-power chip for processing 3-D camera data that could help visually impaired people navigate their environments. The chip consumes only one-thousandth as much power as a conventional computer processor executing the same algorithms.

Improvised naloxone nasal sprays lack evidence of absorption and effect

Naloxone hydrochloride is a medication that can reverse the effects of an opioid overdose. First responders (peers, family, police, etc.) may prefer nasal sprays to injectable naloxone, which has led to widespread use of improvised naloxone kits with atomisers for nasal delivery of the drug. On 18 November 2015, the US Food and Drug Administration (FDA) approved a nasal naloxone product to replace those improvised kits.

Nasal polyps can be treated with medicine dupilumab

Based on endoscopic findings, the condition can be divided into chronic sinusitis with or without nasal polyps. Nasal polyps originate in the sinuses and obstruct the sinus and nasal passages. An international team of researchers decided to test dupilumab, a human antibody which already demonstrated clinical efficacy for asthma and atopic dermatitis.

Study conducted in the United States and Europe

Examining how terrestrial life's building blocks may have first formed

How did life begin? This is one of the most fundamental questions scientists puzzle over. To address it, they have to look not just back to the primordial Earth, but out into space. Now, scientists propose in the Journal of the American Chemical Society a new set of cosmic chemical reactions that could have contributed to the formation of life on our planet.