ScienceDaily: Top Science News

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• Sweat glands grown from newly identified stem cells
• Solar corona revealed in super-high-definition
• Highly transparent solar cells for windows that generate electricity
• River networks on Saturn's largest moon, Titan, point to a puzzling geologic history
• 'Seeds' of massive black holes found at the center of the Milky Way galaxy

Sweat glands grown from newly identified stem cells Posted: 20 Jul 2012 05:01 PM PDT To date, few fundamentals have been known about the most common gland in the body, the sweat glands that are essential to controlling body temperature, allowing humans to live in the world's diverse climates. Now, in a tour de force, researchers have identified, in mice, the stem cell from which sweat glands initially develop as well as stem cells that regenerate adult sweat glands.

Solar corona revealed in super-high-definition Posted: 20 Jul 2012 04:55 PM PDT Astronomers have just released the highest-resolution images ever taken of the Sun's corona, or million-degree outer atmosphere, in an extreme-ultraviolet wavelength of light. The 16-megapixel images were captured by NASA's High Resolution Coronal Imager, or Hi-C. The Hi-C telescope provides five times more detail than the next-best observations by NASA's Solar Dynamics Observatory.

Highly transparent solar cells for windows that generate electricity Posted: 20 Jul 2012 10:57 AM PDT Researchers have developed a new transparent solar cell that is an advance toward giving windows in homes and other buildings the ability to generate electricity while still allowing people to see outside.

River networks on Saturn's largest moon, Titan, point to a puzzling geologic history Posted: 20 Jul 2012 07:35 AM PDT New findings suggest the surface of Saturn's largest moon may have undergone a recent transformation. For many years, Titan's thick, methane- and nitrogen-rich atmosphere kept astronomers from seeing what lies beneath. Saturn's largest moon appeared through telescopes as a hazy orange orb, in contrast to other heavily cratered moons in the solar system. Researchers have now analyzed images of Titan's river networks and determined that in some regions, rivers have created surprisingly little erosion.

'Seeds' of massive black holes found at the center of the Milky Way galaxy Posted: 20 Jul 2012 05:30 AM PDT Many galaxies contain enormous amounts of molecular gas in small areas near their nuclei. Highly condensed molecular gas is a birthplace of lots of stars. Moreover, it is considered to closely relate to activities of galactic nuclei. Therefore, it is important to investigate the physical state and chemical properties of molecular gas at galaxy centers through observation. To obtain detailed observation data, it is best to survey the center of the Milky Way Galaxy in which our solar system exists.

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