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    Is the Milky Way getting Bigger?

    April 3, 2018, Categories  Astronomy/Space

    This is a composite image of NGC 4565 used in the new study. Credit: C. M. Lombilla / IAC

    This is a composite image of NGC 4565 used in the new study. Credit: C. M. Lombilla / IAC

    The galaxy we inhabit, the Milky Way, may be getting even bigger, according to Cristina Martínez-Lombilla, a PhD candidate at the Instituto de Astrofísica de Canarias in Tenerife, Spain, and her collaborators. She will present the work of her team in a talk on Tuesday 3 April at the European Week of Astronomy and Space Science in Liverpool.

    The Solar System is located in one of the arms in the disc of a barred spiral galaxy we call the Milky Way, with a diameter of about 100,000 light years. Our home galaxy consists of several hundred billion stars, with huge amounts of gas and dust, all intermingled and interacting through the force of gravity...

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    How a Protein helps Bacteria Outsmart the human Immune System

    April 3, 2018, Categories  Health/Medical, Biology/Biotechnology

    Ixodes scapularis ticks transmit the pathogens of Lyme disease, resulting a multisystem illness in a variety of animals and humans. The image shows bottom side a live Ixodes tick as seen under a confocal immunofluorescence microscope. Credit: Dr. Utpal Pal, University of Maryland

    Ixodes scapularis ticks transmit the pathogens of Lyme disease, resulting a multisystem illness in a variety of animals and humans. The image shows bottom side a live Ixodes tick as seen under a confocal immunofluorescence microscope. Credit: Dr. Utpal Pal, University of Maryland

    Findings have major implications for tick-borne diseases like Lyme disease. Researchers have uncovered a mechanism by which the bacteria that cause Lyme disease persist in the human body and fight the body’s early, innate immune responses. Dr. Utpal Pal, Professor in Veterinary Medicine at the University of Maryland (UMD), has been studying the Borrelia burgdorferi bacteria throughout his 12 years with UMD, and his work has already produced the protein marker used to identify this bacterial infection in the body...

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    Cosmic Lens helps Hubble capture image of most Distant Star ever seen

    April 3, 2018, Categories  Astronomy/Space

    Icarus, whose official name is MACS J1149+2223 Lensed Star 1, is the farthest individual star ever seen. It is only visible because it is being magnified by the gravity of a massive galaxy cluster, located about 5 billion light-years from Earth. Called MACS J1149+2223, this cluster, shown at left, sits between the Earth and the galaxy that contains the distant star. The team had been using Hubble to monitor a supernova in the far-off spiral galaxy when, in 2016, they spotted a point of light near the supernova that began to brighten. Even though the object subsequently became three times brighter in one month, the colors of the light coming from the object did not change. Analysis of these colors showed it was a blue supergiant star in the background galaxy whose magnification grew for several weeks due to an intervening object, probably a star, in the galaxy cluster. The panels at the right show the view in 2011, without Icarus visible, compared with the star's brightening in 2016. Credit: NASA, ESA, and P. Kelly, University of Minnesota

    Icarus, whose official name is MACS J1149+2223 Lensed Star 1, is the farthest individual star ever seen. It is only visible because it is being magnified by the gravity of a massive galaxy cluster, located about 5 billion light-years from Earth. Called MACS J1149+2223, this cluster, shown at left, sits between the Earth and the galaxy that contains the distant star. The team had been using Hubble to monitor a supernova in the far-off spiral galaxy when, in 2016, they spotted a point of light near the supernova that began to brighten. Even though the object subsequently became three times brighter in one month, the colors of the light coming from the object did not change...

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    Engineers turn Plastic Insulator into Heat Conductor

    April 2, 2018, Categories  Technology/Electronics, Chemistry/Nanotechnology

    Engineers at MIT have developed a polymer thermal conductor — a plastic material that, however counterintuitively, works as a heat conductor, dissipating heat rather than insulating it. Image: Chelsea Turner/MIT

    Engineers at MIT have developed a polymer thermal conductor — a plastic material that, however counterintuitively, works as a heat conductor, dissipating heat rather than insulating it. Image: Chelsea Turner/MIT

    Technique could prevent overheating of laptops, mobile phones, and other electronics. Plastics are excellent insulators, meaning they can efficiently trap heat – a quality that can be an advantage in something like a coffee cup sleeve. But this insulating property is less desirable in products such as plastic casings for laptops and mobile phones, which can overheat, in part because the coverings trap the heat that the devices produce.

    Now a team of engineers at MIT has developed a polymer thermal conductor – a plastic material that, however counterintuitively, works as a heat co...

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