News tagged with astrophysical journal

Pitch black: Cosmic clumps cast the darkest shadows

(Phys.org) —Astronomers have found cosmic clumps so dark, dense and dusty that they throw the deepest shadows ever recorded. Infrared observations from NASA's Spitzer Space Telescope of these blackest-of-black ...

May 22, 2014
4.6 / 5 (11) 2

Old star, new trick

The Big Bang produced lots of hydrogen and helium and a smidgen of lithium. All heavier elements found on the periodic table have been produced by stars over the last 13.7 billion years. Astronomers analyze starlight to determine ...

Apr 30, 2012
5 / 5 (10) 30 | with audio podcast

Quasar observed in six separate light reflections

(Phys.org) —Quasars are active black holes—primarily from the early universe. Using a special method where you observe light that has been bent by gravity on its way through the universe, a group of physics ...

Aug 07, 2013
5 / 5 (10) 61 | with audio podcast

SDO mission untangles motion inside the Sun

(Phys.org) —Using an instrument on NASA's Solar Dynamics Observatory, called the Helioseismic and Magnetic Imager, or HMI, scientists have overturned previous notions of how the sun's writhing insides move ...

Aug 28, 2013
5 / 5 (10) 2 | with audio podcast

WISE mission sees skies ablaze with blazars

(Phys.org) -- Astronomers are actively hunting a class of supermassive black holes throughout the universe called blazars thanks to data collected by NASA's Wide-field Infrared Survey Explorer (WISE). The ...

Apr 12, 2012
4.9 / 5 (10) 1 | with audio podcast

Telescopes help solve ancient supernova mystery

(PhysOrg.com) -- A mystery that began nearly 2,000 years ago, when Chinese astronomers witnessed what would turn out to be an exploding star in the sky, has been solved. New infrared observations from NASA's ...

Oct 24, 2011
4.4 / 5 (11) 8 | with audio podcast

Galaxy cluster hidden in plain view

(PhysOrg.com) -- A team of astronomers has discovered the most distant cluster of red galaxies ever observed using FourStar, a new and powerful near-infrared camera on the 6.5m Magellan Baade Telescope. The ...

Mar 06, 2012
4.8 / 5 (10) 5 | with audio podcast

Probing gravity

(Phys.org) -- Einstein's theory of relativity is remarkable not only because it is so successful in explaining seemingly bizarre observations (like the bending of starlight) or because it has assembled a coherent ...

Jul 30, 2012
4.8 / 5 (10) 196 | with audio podcast

Ghostly gamma-ray beams blast from Milky Way's center

(Phys.org) -- As galaxies go, our Milky Way is pretty quiet. Active galaxies have cores that glow brightly, powered by supermassive black holes swallowing material, and often spit twin jets in opposite directions. ...

May 29, 2012
4.2 / 5 (11) 16 | with audio podcast