News tagged with radio wavelengths

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Masers in stellar nurseries

(Phys.org)—Astronomers have come to realize that the process of star formation, once thought to consist essentially of just the simple coalescence of material by gravity, occurs in a complex series of stages. ...

Dec 24, 2012 5 / 5 (3) 7 | with audio podcast

Hubble traps galactic fireflies

(Phys.org)—Luminous galaxies glow like fireflies on a dark night in this image snapped by the NASA/ESA Hubble Space Telescope. The upper central galaxy in this image is a gigantic elliptical galaxy designated ...

Nov 18, 2012 5 / 5 (6) 7 | with audio podcast

ALMA turns its eyes to Centaurus A

(Phys.org) -- A new image of the galaxy Centaurus A, made with the Atacama Large Millimeter/submillimeter Array (ALMA), shows how the observatory allows astronomers to see through the opaque dust lanes that ...

May 31, 2012 4.9 / 5 (10) 0 | with audio podcast

Do black holes help stars form?

(PhysOrg.com) -- The center of just about every galaxy is thought to host a black hole, some with masses of thousands of millions of Suns and consequently strong gravitational pulls that disrupt material around ...

Feb 03, 2012 4.5 / 5 (6) 1 | with audio podcast

A black hole unmasked

Black holes are among the most amazing and bizarre predictions of Einstein's theory of gravity. A black hole is thought to be point-like in dimension, but it is surrounded by an imaginary surface, or "edge," ...

Nov 29, 2011 4.7 / 5 (19) 26 | with audio podcast

Millisecond pulsar in spin mode

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. Moreover, its ...

Nov 03, 2011 4.6 / 5 (5) 8 | with audio podcast

9 new gamma pulsars

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 to find ...

Nov 03, 2011 4 / 5 (1) 3 | with audio podcast