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New Information from IceCube Neutrino Observatory May Help Unravel Origin of Cosmic Rays

The origin of cosmic rays in the universe has confounded scientists for decades. But a study by researchers using data from the IceCube Neutrino Observatory at the South Pole reveals new information that may help unravel the longstanding mystery of exactly how and where these “rays” (they are actually high-energy particles) are produced.

30 Aug 2013

HEASARC Presents Data from Black-Hole Hunting Telescope, NuSTAR

NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, is giving the wider astronomical community a first look at its unique X-ray images of the cosmos. The first batch of data from the black-hole hunting telescope is publicly available today, Aug. 29, via NASA's High Energy Astrophysics Science Archive Research Center, or HEASARC.

30 Aug 2013

Einstein@Home Global Computer Network Discovers 24 Pulsars

The combined computing power of 200,000 private PCs helps astronomers take an inventory of the Milky Way. The Einstein@Home project connects home and office PCs of volunteers from around the world to a global supercomputer.

30 Aug 2013

Super Massive Black Holes Do Not Suck In Everything

Using NASA’s super-sensitive Chandra X-ray space telescope, a team of astronomers led by Q. Daniel Wang at the University of Massachusetts Amherst has solved a long-standing mystery about why most super massive black holes (SMBH) at the centers of galaxies have such a low accretion rate—that is, they swallow very little of the cosmic gases available and instead act as if they are on a severe diet.

30 Aug 2013

Study Confirms Topological Crystalline Insulator's Exotic Band Structure

Disrupting the symmetrical structure of a solid-state topological crystalline insulator creates mass in previously mass-less electrons and imparts an unexpected level of control in this nascent class of materials, an international team of researchers reports in the current edition of Science Express.

30 Aug 2013

Sun's Meridional Flow Mystery Solved

Stanford solar scientists have solved one of the few remaining fundamental mysteries of how the sun works.

30 Aug 2013

Galaxy’s Black Hole Has a Surprisingly Small Appetite

For years, scientists have observed that the black hole at the center of our galaxy has a surprisingly small appetite.

30 Aug 2013

Chandra Images Sgr A* Capture Hot Gas Ejected by Nearby Stars and Funnel It In

Astronomers using NASA's Chandra X-ray Observatory have taken a major step in explaining why material around the giant black hole at the center of the Milky Way Galaxy is extraordinarily faint in X-rays. This discovery holds important implications for understanding black holes.

30 Aug 2013

Physicists Simulate Cosmic Microwave Background Radiation Following the Big Bang

Physicists have reproduced a pattern resembling the cosmic microwave background radiation in a laboratory simulation of the Big Bang, using ultracold cesium atoms in a vacuum chamber at the University of Chicago.

30 Aug 2013

Modified Newtonian Dynamics Predicts Velocity Dispersion in Andromeda’s Dwarf Satellite Galaxies

A modified law of gravity correctly predicted, in advance of the observations, the velocity dispersion—the average speed of stars within a galaxy relative to each other—in 10 dwarf satellite galaxies of the Milky Way’s giant neighbor Andromeda.

29 Aug 2013