Distant Black Hole Discovered Devouring a Sun-like Star
Images from Swift's Ultraviolet/Optical (white, purple) and X-Ray telescopes (yellow and red) were combined to make this view of Swift J1644+57. Evidence of flares is seen only in the X-ray image, a 3.4-hour exposure taken on March 28, 2011. Credit: NASA/Swift/Stefan Immler
Video: New Forensic Fingerprinting Approach Retrieves Elusive Prints
Ancestry of Polar Bears Traced to Ireland
Beth Shapiro's research team concluded that all living polar bears trace their maternal ancestor to a brown bear that lived near present-day Britain and Ireland just prior to the last ice age. Credit: Daniel J. Cox/NaturalExposures.com
Scientists Sequence Endangered Tasmanian Devil's Genome
Zoo keeper and breeder Tim Faulkner holds a Tasmanian devil -- an endangered marsupial found in the wild in the Australian island-state of Tasmania. Credit: Stephan C. Schuster, Penn State
Slowing the Spread of Drug-Resistant Diseases Is Goal of New Research Area
This colored 2005 scanning electron micrograph (SEM) shows numerous clumps of methicillin-resistant Staphylococcus aureus bacteria, commonly referred to by the acronym, MRSA, magnified 2390 times. Credit: Janice Haney Carr/CDC/ Jeff Hageman, M.H.S.
Life-History Traits May Affect DNA Mutation Rates in Males More Than in Females
Credit: Anton Nekrutenko, Penn State
Cosmic Explosion is New Candidate for Most Distant Object in the Universe
Credit: Gemini Observatory / AURA / Levan, Tanvir, Cucchiara
Nearby Supernova Factory Turns On
This large Chandra image shows the Carina Nebula, a star-forming region in the Sagittarius-Carina arm of the Milky Way a mere 7,500 light years from Earth. Chandra's sharp X-ray vision has detected over 14,000 stars in this region, revealed a diffuse X-ray glow, and provided strong evidence that massive stars have already self-destructed in this nearby supernova factory. Credit: NASA/CXC/PSU/L.Townsley et al.
Packaging Process for Genes Discovered in New Research
Like a strand of white pearls, DNA wraps around an assembly of special proteins called histones (colored) to form the nucleosome, a structure responsible for regulating genes and condensing DNA strands to fit into the cell's nucleus. Credit: Karolin Luger
New Technique Sheds Light on the Mysterious Process of Cell Division
Asymmetric division of a primitive model cell composed of a lipid membrane that encapsulates a polymer solution.
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