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Complex chemistry in Saturn’s moon Titan’s atmosphere

Archival ALMA data have confirmed that molecules of vinyl cyanide reside in the atmosphere of Titan, Saturn's largest moon. Titan is shown in an optical (atmosphere) infrared (surface) composite from NASA's Cassini spacecraft. In a liquid methane environment, vinyl cyanide may form membranes. Credit: B. Saxton (NRAO/AUI/NSF); NASA

Archival ALMA data have confirmed that molecules of vinyl cyanide reside in the atmosphere of Titan, Saturn’s largest moon. Titan is shown in an optical (atmosphere) infrared (surface) composite from NASA’s Cassini spacecraft. In a liquid methane environment, vinyl cyanide may form membranes. Credit: B. Saxton (NRAO/AUI/NSF); NASA

Saturn’s moon offers glimpse of Earth’s primordial past. Saturn’s largest moon, Titan, is one of our solar system’s most intriguing and Earth-like bodies. It is nearly as large as Mars and has a hazy atmosphere made up mostly of nitrogen with a smattering of organic, carbon-based molecules, including methane (CH4) and ethane (C2H6). Planetary scientists theorize that this chemical make-up is similar to Earth’s primordial atmosphere.

The conditions on Ti...

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Glittering Stars: Spiral galaxy NGC 4248

Spiral galaxy NGC 4248, 24 million light-years away in the constellation of Canes Venatici (The Hunting Dogs). Credit: European Space Agency

Spiral galaxy NGC 4248, 24 million light-years away in the constellation of Canes Venatici (The Hunting Dogs). Credit: European Space Agency

This beautiful clump of glowing gas, dark dust and glittering stars is the spiral galaxy NGC 4248, located about 24 million light-years away in the constellation of Canes Venatici (The Hunting Dogs). This image was produced by the NASA/ESA Hubble Space Telescope as it embarked upon compiling the first Hubble ultraviolet “atlas,” which targeted 50 nearby star-forming galaxies. The collection spans all kinds of different morphologies, masses, and structures. Studying this sample can help us to piece together the star-formation history of the Universe.

By exploring how massive stars form and evolve within such galaxies, astronomers can learn more about h...

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Sticky when wet: Strong Adhesive for Wound Healing

A new, flexible adhesive material inspired by the glue secreted by slugs adheres to biological tissues (even when wet) without causing toxicity, and can be formed into either sheets (teal blue) or custom shapes (dark blue). Credit: Wyss Institute at Harvard University

A new, flexible adhesive material inspired by the glue secreted by slugs adheres to biological tissues (even when wet) without causing toxicity, and can be formed into either sheets (teal blue) or custom shapes (dark blue). Credit: Wyss Institute at Harvard University

Slug-inspired, flexible medical bio-glue sticks to wet surfaces without toxicity. A super-strong ‘tough adhesive’ has been created that is non-toxic and binds to biological tissues with a strength comparable to the body’s own resilient cartilage, even when they’re wet. Inspired by the glue produced by a slug, the double-layered hydrogel material demonstrates both high adhesion strength and strain dissipation, making it useful in a variety of medical applications.

When first author Jianyu Li, Ph.D...

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New Magnet has nearly Massless Charge Carriers

The magnetic and electronic states of newly discovered Sr1-yMn1-zSb2 are depicted by spheres representing the positions of the atoms in the crystal structure of this material with strontium (Sr) depicted by the small violet spheres; antimony (Sb) by the large blue spheres; and manganese (Mn) by the purple spheres. The arrows attached to the Mn atoms represent the magnetic moments of these atoms which align in the orientation shown to give the magnetic properties of Sr1-yMn1-zSb2. Also depicted are the energy and momentum states of the conducting electrons, or charge carriers, which have a Dirac-like dispersion relation shown in gold. Credit: Oak Ridge National Laboratory

The magnetic and electronic states of newly discovered Sr1-yMn1-zSb2 are depicted by spheres representing the positions of the atoms in the crystal structure of this material with strontium (Sr) depicted by the small violet spheres; antimony (Sb) by the large blue spheres; and manganese (Mn) by the purple spheres. The arrows attached to the Mn atoms represent the magnetic moments of these atoms which align in the orientation shown to give the magnetic properties of Sr1-yMn1-zSb2. Also depicted are the energy and momentum states of the conducting electrons, or charge carriers, which have a Dirac-like dispersion relation shown in gold. Credit: Oak Ridge National Laboratory

Advances in modern electronics has demanded the requisite hardware, transistors, to be smaller in each new iteration...

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