“We have been observing the sun during the space age for only 50 years and we do not fully understand its behavior, especially the extremes of its behavior. In 2006 there was an eruption of solar radiation 100 times more intense than expected that temporarily silenced many GPS receivers over the sun-lit Earth. What is the ultimate limit of such eruptions of solar energy? Is it 1,000 times more intense, 10,000 times more intense? We just don’t know.
“For the past 50 or 60 years, the sun has been quite predictable. In recent years, it has become less predictable, which calls into question our understanding of how the sun operates and our ability to predict is impact on technology.
“However, we do know that our increasingly more efficient infrastructure is also less robust and more vulnerable. Every time its efficiency is improved and money is saved, the chances for a catastrophic failure are increased and this includes failures produced by space weather.
“For many GPS applications, business plans make demands that the designers of GPS never envisioned – nor does the U.S government guarantee. Space weather – such as the upcoming period of increased solar activity – will challenge these business plans and test the vulnerabilities of our communications and navigation infrastructure.”
--Paul M. Kintner, an expert on GPS and satellite communication and Professor of Electrical and Computer Engineering at Cornell University.
Joe Schwartz | Newswise Science News
21.08.2017 | Albert-Ludwigs-Universität Freiburg im Breisgau
AI implications: Engineer's model lays groundwork for machine-learning device
18.08.2017 | Washington University in St. Louis
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
22.08.2017 | Health and Medicine
22.08.2017 | Materials Sciences
22.08.2017 | Life Sciences