Save
Email
Print
Share
RSSBrowse News Stories
421 to 430 of 2,137 stories
view headlines only
-
Millisecond Pulsar in Spin Mode: Gamma Radiation of Rapidly Rotating Neutron Star Casts Doubt on Origin Models
November 3, 2011 — Astronomers have tracked down the first gamma-ray pulsar in a globular cluster of stars. It is around 27,000 light years away and thus also holds the distance record in this class of objects. ... > full story -
NASA's Fermi Finds Youngest Millisecond Pulsar, 100 Pulsars to-Date
November 3, 2011 — An international team of scientists using NASA's Fermi Gamma-ray Space Telescope has discovered a surprisingly powerful millisecond pulsar that challenges existing theories about how these objects ... > full story -
Nine New Gamma Pulsars Brings Known Gamma-Ray Pulsars to Over 100
November 3, 2011 — Pulsars are the lighthouses of the universe. These compact and fast-rotating neutron stars flash many times per second in the radio or gamma-ray band. Pure gamma-ray pulsars are extremely difficult ... > full story -
Observations of Gamma-Ray Burst Reveal Surprising Ingredients of Early Galaxies
November 2, 2011 — Astronomers have used the brief but brilliant light of a distant gamma-ray burst as a probe to study the make-up of very distant galaxies. Surprisingly the new observations revealed two galaxies in ... > full storyMore: -
One Step Closer to Dark Matter in Universe
October 31, 2011 — Scientists all over the world are working feverishly to find the dark matter in the universe. Now researchers have taken one step closer to solving the enigma with a new ... > full story -
Electron Accelerator Scientists Report Breakthroughs
October 25, 2011 — Scientists have surpassed two major milestones toward a novel, exceedingly powerful X-ray source: A record-breaking electron gun emittance and a successfully tested prototype of a superconducting ... > full story -
One Clock With Two Times: When Quantum Mechanics Meets General Relativity
October 20, 2011 — General relativity, the joint theory of gravity, space and time gives predictions that become clearly evident on a cosmic scale of stars and galaxies. Quantum effects are fragile and observed on ... > full story -
Increased Safety Using Simultaneous Techniques for Cardiac Testing
October 19, 2011 — Experts have published an article on the safety of cardiac imaging methods. This study is important for patients worried about radiation exposure during X-ray based studies of the heart. X-ray based ... > full story -
Mobile Electrons Multiplied in Quantum Dot Films
October 14, 2011 — Researchers have demonstrated that several mobile electrons can be produced by the absorption of a single light particle in films of coupled quantum dots. These multiple electrons can be harvested in ... > full story -
Clearing the 'Cosmic Fog' of the Early Universe: Massive Stars May Be Responsible
October 12, 2011 — The space between the galaxies wasn't always transparent. In the earliest times, it was an opaque, dense fog. How it cleared is an important question in astronomy. New observational evidence shows ... > full story
Search ScienceDaily
Number of stories in archives: 137,088
more 
