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    Cassini finds Saturn’s moon Enceladus may have tipped over

    May 31, 2017, Categories  Astronomy/Space

    Working with image data from NASA's Cassini mission, researchers have found evidence that Saturn's moon Enceladus may have tipped over, reorienting itself so that terrain closer to its original equator was relocated to the poles. This phenomenon is known as true polar wander. Credits: NASA/JPL-Caltech/Space Science Institute/Cornell University

    Working with image data from NASA’s Cassini mission, researchers have found evidence that Saturn’s moon Enceladus may have tipped over, reorienting itself so that terrain closer to its original equator was relocated to the poles. This phenomenon is known as true polar wander. Credits: NASA/JPL-Caltech/Space Science Institute/Cornell University

    Saturn’s icy, ocean-bearing moon Enceladus may have tipped over in the distant past, according to recent research from NASA’s Cassini mission. Researchers found evidence that the moon’s spin axis—the line through the north and south poles—has reoriented, possibly due to a collision with a smaller body, such as an asteroid...

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    Do stars fall quietly into black holes, or crash into something utterly unknown?

    May 31, 2017, Categories  Physics, Astronomy/Space

    This artist's impression shows a star crossing the event horizon of a supermassive black hole located in the center of a galaxy. The black hole is so large and massive that tidal effects on the star are negligible, and the star is swallowed whole. Mark A. Garlick/CfA

    This artist’s impression shows a star crossing the event horizon of a supermassive black hole located in the center of a galaxy. The black hole is so large and massive that tidal effects on the star are negligible, and the star is swallowed whole. Mark A. Garlick/CfA 

    Astronomers at The University of Texas at Austin and Harvard University have put a basic principle of black holes to the test, showing that matter completely vanishes when pulled in. Their results constitute another successful test for Albert Einstein’s General Theory of Relativity. Most scientists agree that black holes, cosmic entities of such great gravity that nothing can escape their grip, are surrounded by a so-called event horizon...
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    Nanosubmarine with Self-Destroying activity

    May 30, 2017, Categories  Health/Medical, Biology/Biotechnology

    Self-assembly of a redox-responsive stomatocyte nanomotor system, which can be used for triggered drug release under biological reducing conditions

    Self-assembly of a redox-responsive stomatocyte nanomotor system, which can be used for triggered drug release under biological reducing conditions

    Self-destroyed redox-sensitive stomatocyte nanomotor delivers and releases drugs for cells. Autonomous targeting and release of drugs at their site of action are desired features of nanomedical systems. Now, a team of Dutch scientists has designed a nanomotor that has these functions: An antitumor drug encapsulated in self-propelled, self-assembled stomatocytes is carried across the cellular membrane and released inside the cell upon a chemical signal that disassembles the vesicle membrane. This deliver and unpack nanomedicinal system is introduced in the journal Angewandte Chemie.

    Self-propelling nanovesicles if fueled by hydrogen peroxide, th...

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    Harnessing Energy from Glass Walls

    May 30, 2017, Categories  Physics, Technology/Electronics, Chemistry/Nanotechnology

    1.Prototype of a semi-transparent perovskite solar cell with thermal-mirror functionality. Copyright : Korea Advanced Institute of Science and Technology (KAIST) 2. Thermal images are taken by an infrared camera to compare the heat rejection performance of automobile window film, semi-transparent solar cell and glass. Copyright : Korea Advanced Institute of Science and Technology (KAIST) 3. Typical solar cells today are made of crystalline silicon, which is difficult to make translucent. Copyright : Liu Fuyu / 123rf

    1.Prototype of a semi-transparent perovskite solar cell with thermal-mirror functionality.
    Copyright : Korea Advanced Institute of Science and Technology (KAIST)
    2. Thermal images are taken by an infrared camera to compare the heat rejection performance of automobile window film, semi-transparent solar cell and glass.
    Copyright : Korea Advanced Institute of Science and Technology (KAIST)
    3. Typical solar cells today are made of crystalline silicon, which is difficult to make translucent.
    Copyright : Liu Fuyu / 123rf

    A Korean team has developed semi-transparent perovskite solar cells that could be great candidates for solar windows...

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