Genealogy of Scaly Reptiles Rewritten by New Research
© Eladio Fernandez 2005 Looks can be deceiving: New gene study redraws family tree of lizards and puts primitive-looking iguanas (shown here) and relatives at the top instead of bottom of the tree.
Scientists Discover How to Flip a Molecular Switch
Credit: Lewis et al. Sequential STM images of FAPPB/R1ATC9 obtained at alternating sample biases of +1.0 and -1.0 V. The majority of the FAPPB molecules (apparent protrusions, displayed as bright spots) switch conductance states between OFF at +1.0 V and ON at -1.0 V sample bias. The red and green boxes follow one FAPPB molecule that exhibits this bias dependence. Imaging conditions: 4000 Å × 4000 Å, I = 2 pA.
Swift Satellite Hailed as "Best of What's New" in Popular Science
Swift Satellite Hailed as "Best of What's New" in Popular Science
New Sculpture Looks Beyond Three Dimensions
The sculpture measures about six feet in every direction and is mounted on a granite base about three feet high.
Short Flash from Enormous Explosion Solves Cosmic Mystery
Credit: Derek Fox/Penn State University Hubble Space Telescope image of the sky surrounding the afterglow and host galaxy of the HETE short burst of July 9, 2005. The circle indicates the region of sky that HETE saw the burst from; according to the HETE team we would find the burst within this region. The box, inset, indicates where the X-ray and optical afterglow of the burst was ultimately found. The colors indicate the intensity of red light (814 nm) as seen by the Advanced Camera for Surveys instrument
NASA Satellite, Controlled by Penn State, Detects Most Distant Explosion
Image Credit: Nicolle Rager Fuller/NSF
South African Telescope, Patterned After Hobby-Eberly Telescope, Sees First Light
Image courtesy of South African Large Telescope, © SALT
Trumpler 14: Bright Young Stars Mix It Up
Credit: NASA/CXC/Penn State/L.Townsley et al. Chandra's image of the star cluster Trumpler 14 shows about 1,600 stars and a diffuse glow from hot multimillion-degree X-ray-producing gas. The cluster has one of the hightest concentrations of massive, luminous stars in the Galaxy. Located on the edge of a giant molecular cloud, it is part of the Carina Complex which contains at least 8 star clusters.
NASA'S Swift Satellite Finds Newborn Black Holes
Credit: NASA/GSFC/Dana Berry
New Microprinting Technique Improves Nanoscale Fabrication
A demonstration of microdisplacement printing, in which a weakly bound film is displaced by contact stamping with molecules that bind more strongly to the substrate. This process leaves a patterned film with regions of strongly bound molecules (where the weakly bound molecules were displaced) and regions of the remaining weakly bound molecules.
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