Asteroid Named for Two Penn State Students
The Sloan Digital Sky Survey's 2.5-meter telescope at the Apache Point Observatory in the Sacramento Mountains of New Mexico is on the left. Credit: SDSS.
Nanomotors Are Controlled, for the First Time, Inside Living Cells
Optical microscope image of a HeLa cell containing several gold-ruthenium nanomotors. Arrows indicate the trajectories of the nanomotors, and the solid white line shows propulsion. Near the center of the image, a spindle of several nanomotors is spinning. Inset: Electron micrograph of a gold-ruthenium nanomotor. The scattering of sound waves from the two ends results in propulsion. Photo credit: Mallouk lab, Penn State University
Critical Protein Discovered for Healthy Cell Growth in Mammals
Using mouse models, Penn State cellular biologist Aimin Liu and his colleagues discovered a protein that is required for the growth of critical, hair-like structures called cilia on cell surfaces. The cilia on a mouse embryo, shown in this micrograph, would not be able to grow without the protein C2cd3. Credit: Aimin Liu Lab, Penn State University.
"Strategies for Survival on Planet Earth" is the Theme of the 2014 Penn State Lectures on the Frontiers of Science
Strategies for Survival on Planet Earth poster
A New, "Exceptionally Close" Exploding Star
Swift UVOT images showing M82 before and after the new supernova. The pre-explosion view combines data taken between 2007 and 2013. The view showing SN 2014J merges three exposures taken on Jan. 22, 2014. Mid-ultraviolet light is shown in blue, near-UV light in green, and visible light in red. Credit: NASA/Swift/P. Brown, TAMU
A New Pathway for Neuron Repair is Discovered
This image shows a single neuron in a whole animal 5 hours after dendrites were removed with laser surgery (left). The same cell was imaged at 48 hours and 96 hours after the dendrites were removed. At 48 hours (middle) a new dendrite arbor extends from the cell body, and by 96 hours the new arbor fills the entire space normally occupied by the cell. Credit: Melissa Rolls lab, Penn State University
Size of the Universe Now Measured to Within One Percent
An artist's concept of the new measurement of the size of the Universe. The gray spheres show the pattern of the baryon acoustic oscillations from the early Universe. Galaxies today have a slight tendency to align on the spheres -- the alignment is greatly exaggerated in this illustration. By comparing the size of the spheres (white line) to the predicted value, astronomers can determine to 1% accuracy how far away the galaxies are. Image Credit: Zosia Rostomian, Lawrence Berkeley National Laboratory
X-Ray Factory Revealed in the Center of Our Galaxy
This X-ray image of the galactic center merges Swift XRT observations through 2013. Sgr A* is at center. Low-energy X-rays (300 to 1,500 electron volts) are shown in red, medium-energy (1,500 to 3,000 eV) in green, and high-energy (3,000 to 10,000 eV) in blue. The total exposure time is 12.6 days.Credit: NASA/Swift/N. Degenaar (Univ. of Michigan)
DNA of Storied Plant Provides Insight into the Evolution of Flowering Plants, Study Finds
Amborella male flowers. Photograph by Joel McNeal.
Brain Repair after Injury and Alzheimer's Disease: In vivo reprogramming of reactive glial cells into functional neurons
Researchers at Penn State University led by biologist Gong Chen have developed an innovative technology to regenerate functional neurons after brain injury, and also in model systems used for research on Alzheimer's disease.
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