University of Chicago astronomer Patrick Palmer last studied a comet in 2000, but he is the member of research teams that will make scientific observations of two comets this spring, and they narrowly missed viewing a third.
Some astronomers are predicting that the two comets, NEAT and LINEAR, will be visible with the naked eye, in the eastern sky shortly before sunrise or in the western sky shortly after sunset, during the next few weeks. But neither comet will be anywhere near as bright as comets Hyakutake and Hale-Bopp, which wowed observers in 1996 and 1997. Palmer says binoculars will probably be required to view NEAT and LINEAR.
Palmer mostly studies star formation, but he added comets to his research agenda in the early 1980s. He was a member of the research team that made the first radio image of a comet (Halley’s comet) in 1985. Now he is part of two separate research teams that in May will study the simultaneously approaching comets. One team will make a week of observations of the two comets using the 100-meter Green Bank Telescope at the National Radio Astronomy Observatory in West Virginia. The other will take measurements for 10 days using the Berkeley Illinois Maryland Array in northern California.
Steve Koppes | EurekAlert!
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11.12.2017 | University of Birmingham
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
An interdisciplinary group of researchers interfaced individual bacteria with a computer to build a hybrid bio-digital circuit - Study published in Nature Communications
Scientists at the Institute of Science and Technology Austria (IST Austria) have managed to control the behavior of individual bacteria by connecting them to a...
Physicists in the Laboratory for Attosecond Physics (run jointly by LMU Munich and the Max Planck Institute for Quantum Optics) have developed an attosecond electron microscope that allows them to visualize the dispersion of light in time and space, and observe the motions of electrons in atoms.
The most basic of all physical interactions in nature is that between light and matter. This interaction takes place in attosecond times (i.e. billionths of a...
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