Young stars ejecting plasma could give us clues into the Sun’s past Kyoto, Japan — Down here on Earth we don’t usually notice, but the Sun is frequently ejecting huge masses of plasma into space. These are called coronal mass ejections (CMEs). They often occur together with sudden brightenings called flares, and sometimes extend far enough to disturb Earth’s magnetosphere, generating space weather phenomena including auroras or geomagnetic storms, and even damaging power grids on occasion. Scientists believe that when…
The Hubble constant is a fundamental quantity that measures the current rate at which our universe is expanding. It is named after 20th Century Carnegie…
Astronomers survey the scale of the Universe by first measuring the distances to close-by objects and then using them as standard candles [1] to pin down…
But there is growing evidence that several million years ago the galactic center was the site of all manner of celestial fireworks. A pair of assistant…
New stars are surrounded by rotating gas disks during the early stages of their lives. Gas giant planets are thought to form in the presence of these disks. Observations of young stars that still have these gas disks demonstrate that sun-like stars undergo periodic outbursts, lasting about 100 years, which transfer mass from the disk onto the young star, increasing its luminosity. It is thought that these short bursts of mass accretion are driven by marginal gravitational instability in the gas disk. …
Organic semiconductor materials have numerous advantages: They are inexpensive to synthesize in large quantities, easy to process, mechanically flexible and…
The invention is a lightweight element / semi-finished part with an extensive surface consisting of at least two layers of sheet metal and one structured sheet…
Founded in 1954, the SAG collection today comprises around 2400 strains (representing 538 genera and 1424 species) from almost all evolutionarylineages of…
The invention is a lightweight element / semi-finished part with an extensive surface consisting of at least two layers of sheet metal and one structured sheet metal. The structured blank is typified by macro-stiffening elements without any markedly flat even sections and has a honeycomb form. The single blanks are laid on top of each other and held together by joints. Components may be straight or bent, according to need. The invention not only markedly increases the stiffness characteristics of the light-weight elements but also minimizes the weight.
This isn't the ice of snowflakes or ice cubes. No, this ice needs such intense cold and low pressure to form that the right conditions rarely, if ever, occur…
The science behind tomorrow's quantum computing and communications devices is being conducted today at UCSB in what some physicists consider to be one of the…
The effect of this huge concentration of matter is to deform the fabric of spacetime, which in turn distorts the path that light takes when it travels through…
Dental prostheses require the exact registration of the intra oral situation. The different sub-procedures cause errors. As a result, the manual adaption of…
The inventive capacitive sensor enables precise determination of the oxidation stability of biodiesel during thermo-oxidative degradation. The so called…
In the last decade, theoretical computer science has seen remarkable progress on the problem of solving graph Laplacians — the esoteric name for a calculation…
Researchers at the University of Rochester and the University of Ottawa have applied a recently developed technique to directly measure for the first time the…
The scientists used the National Science Foundation's Green Bank Telescope (GBT) in West Virginia to study a giant cloud of gas some 25,000 light-years from…
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