News tagged with radio wavelength
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 |
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Massive black holes halt star birth in distant galaxies
Astronomers, using the European Space Agency's (ESA) Herschel Space Observatory, have shown that the number of stars that form during the early lives of galaxies may be influenced by the massive black holes ...
May 09, 2012 |
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A 'melted' moon makes for bad future landing sites
The miniature radio frequency (min-RF) radar instrument aboard the Lunar Reconnaissance Orbiter (LRO) is revealing some interesting things about how impact melts form around craters on the Moon. Impacts produce ...
Space & Earth / Space Exploration
Mar 05, 2012 |
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Distorting the lens
(PhysOrg.com) -- One of the most bizarre predictions of Einstein's Theory of General Relativity is the existence of back holes, objects that are so dense that not even light can escape from their gravitational ...
Feb 09, 2012 |
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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 |
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The birth of a telescope 30 times larger than Earth
(PhysOrg.com) -- On 15 November 2011, the Effelsberg 100-meter radio telescope, together with three Russian and one Ukrainian telescope, took part in the first interferometric observations with the orbiting ...
Dec 08, 2011 |
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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 |
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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 |
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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 |
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The high energy crab
(PhysOrg.com) -- The Crab Nebula is the remnant of a supernova. Its precursor star exploded in 1054 AD in an event that was recorded by Chinese and (quite probably) Anasazi Indian astronomers. It is called ...
Oct 31, 2011 |
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Dawn beams back asteroid science data
(PhysOrg.com) -- The Dawn spacecraft has completed a graceful spiral into the first of four planned science orbits during the spacecraft's yearlong visit to Vesta. The spacecraft started taking detailed observations ...
Space & Earth / Space Exploration
Aug 12, 2011 |
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A new, distant arm of the Milky Way galaxy
(PhysOrg.com) -- Our Milky Way galaxy, like other spiral galaxies, has a disk with sweeping arms of stars, gas, and dust that curve around the galaxy like the arms of a huge pinwheel.
Jun 13, 2011 |
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Finger on the pulse of the pulsars
(PhysOrg.com) -- An international team of astronomers including German scientists has succeeded in recording the most sensitive observations to date of pulsars at low frequency. The measurement was undertaken ...
May 06, 2011 |
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Moth eyes inspire antireflective surfaces for military applications
(PhysOrg.com) -- If you look closely at the surface of a moth's cornea, you see that it is comprised of tiny protruding bumps. These bumps exist to keep moths safe from predators by preventing light from reflecting ...
Mar 08, 2011 |
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The murmur of a monster
The Andromeda galaxy is the nearest large galaxy to our Milky Way. Like the Milky Way, it has a spiral-arm structure with a massive black hole at its nucleus. Unlike the Milky Way, however, its black hole ...
Feb 28, 2011 |
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