Latest Radio astronomy Stories

Asteroid Spin May Reveal Clues About Its Future Orbital Path
2013-02-12 11:46:49

April Flowers for redOrbit.com - Your Universe Online On February 15, astronomers will have an exciting opportunity with a record-setting close approach of an asteroid.  The research team, using the National Radio Astronomy Observatory (NRAO) and NASA telescopes, will gain a key clue that will help predict the future of this natural cosmic orbiter. Discovered just a year ago, the 150-foot-wide asteroid, called 2012 DA14, will pass only 17,200 miles from the Earth on Friday, which...

Astronomers Puzzled By Chameleon-Like Behavior Of Reverse Pulsar
2013-01-25 10:42:24

April Flowers for redOrbit.com - Your Universe Online Pulsars are one of the most baffling classes of astronomical objects. Originally discovered as flickering sources of radio waves, pulsars were soon interpreted as rapidly rotating and strongly magnetized neutron stars about the size of a small city. Because of the oppositely directed beams of radiation emitted from their magnetic poles, pulsars are like cosmic lighthouses. The star spins and the beams sweep past the Earth, displaying a...

Taking Temperature Of Universe In Past Reveals Cooling Trend
2013-01-23 12:51:18

Lee Rannals for redOrbit.com — Your Universe Online Astronomers using the CSIRO radio telescope have discovered that the Universe's temperature has cooled down, which falls right in line with the Big Bang theory. An international team of astronomers from Sweden, France, Germany and Australia used the CSIRO Australia Telescope Compact Array near Narrabi to measure how warm the Universe was when it was half its current age. "This is the most precise measurement ever made of how...

Manatee Nebula Named For Its Resemblance To The Sea Cow
2013-01-19 07:04:37

[ Watch the Video: A Microquasar Makes a Giant Manatee Nebula ] redOrbit Staff & Wire Reports - Your Universe Online Thanks to a powerful National Science Foundation (NSF) telescope and an observation made by one National Radio Astronomy Observatory (NRAO) official, the W50 nebula located approximately 18,000 light years away has a new name — the Manatee Nebula. Images of the massive supernova remnant captured recently by the NSF´s Karl G. Jansky Very Large Array (VLA)...

Green Light For ALMA Early Science Cycle 1
2013-01-10 11:56:58

European Southern Observatory (ESO) ALMA (the Atacama Large Millimeter/submillimeter Array) has begun a new and more advanced phase of science observations. This phase is known as Early Science Cycle 1, and will last until October 2013. The telescope´s power has been greatly increased: it will make observations with more antennas, spread over a greater distance, than ever before, and will use antennas from the Atacama Compact Array (ACA) for the first time. Although ALMA is still...

New Chandra Footage Suggests Vela Pulsar May Be Precessing
2013-01-08 12:30:00

Watch the video "Chandra Captures Neutron Star In Action" redOrbit Staff & Wire Reports - Your Universe Online New video footage of the Vela pulsar, a neutron star located approximately 1,000 light-years from Earth, suggests that the pulsar could be slowly wobbling as it spins, NASA officials said on Monday. Formed following the collapse of a massive star, the Vela pulsar is approximately 12 miles in diameter and capable of making a complete rotation in under 90 milliseconds. The...

Black Hole Caught Belching In Neighboring Galaxy
2013-01-08 08:36:30

April Flowers for redOrbit.com - Your Universe Online A team of scientists conducting a long-term study of molecules in galaxies gained a tantalizing look at what is likely a powerful belch by a gorging black hole at the center of a changing galaxy. "The discovery was entirely serendipitous. Our observations were spread over a few years, and when we looked at them, we found that one galaxy had changed over that time from being placid and quiescent, to undergoing a hugely energetic...

ALMA Correlator Supercomputer Turns Man Antennas Into One Giant Telescope
2012-12-21 10:45:51

[ Watch the Video: All Systems Go for Highest Altitude Supercomputer ] Michael Harper for redOrbit.com — Your Universe Online When one begins to search for the origins of the universe, it helps to be well-equipped and as close to the heavens as possible. Therefore, the Atacama Large Millimeter/sub-millimeter Array (or ALMA) has been built high up in the martian-esque landscape of the Atacama desert of northern Chile. Each of these 66 radio telescopes (or giant antennas) are used...

Researchers Disprove Pulsar Glitch Theory
2012-12-18 16:21:44

Lee Rannals for redOrbit.com — Your Universe Online Researchers reported in the journal Physical Review Letters that they have found a "glitch" in a 40-year-old theory explaining the periodic speeding up or "glitching" of pulsars. Pulsars emit a rotating beam of electromagnetic radiation, which can be detected by powerful telescopes once it sweeps past the Earth. The cosmic objects, which are highly magnetized rotating neutron stars formed from the remains of supernovae, rotate...

Microquasar Found In Distant Galaxy
2012-12-12 13:35:22

Lee Rannals for redOrbit.com - Your Universe Online Astronomers have found a microquasar in a galaxy far away for the first time, according to a report in the journal Nature. The discovery of the microquasar gives hope that more objects may be found in nearby galaxies, which could give astronomers the opportunity to study them in detail, unraveling some of their mysteries. In a microquasar, a black hole with a mass several times that of the Sun pulls material from its companion star...

Latest Radio astronomy Reference Libraries

2014-01-12 00:00:00

Image Caption: NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 56,000 light-years in diameter and approximately 60 million light-years distant. Credit: NASA/ESA/Wikipedia What is Astrophysics? For much of the modern age the term Astrophysics has been used synonymously with Astronomy. This interchange is so common that many textbooks even offer the two as having the same meaning. However, from a strictly historical perspective there are differences...

2010-10-08 17:45:24

Radio telescopes, used in tracking and collecting data from satellites and space probes, are a form of directional radio antenna used in radio astronomy. They operate on the radio frequency portion of the electromagnetic spectrum where they detect radio sources. Radio telescopes are large parabolic antennas used singly or in an array and are located far from major centers of population in order to avoid electromagnetic interference. Karl Guthe Jansky built the first radio antenna used to...

2014-01-12 00:00:00

Sample Entry: Astronomy is the scientific study of stars, planets, comets, galaxies, and other phenomena that occur outside Earth's atmosphere (e.g. cosmic radiation). Astronomy deals with the evolution, physics, chemical makeup, meteorology, and motion of celestial objects, and also the formation of the universe. The word Astronomy comes from the Greek words astron (meaning "star") and nomos (meaning "law"). Astronomy is one of the oldest sciences. Since the dawn of man, people always...

2013-03-16 00:00:00

Yakov Borisovich Zel'dovich (March 8, 1914 "“ December 2, 1987) was a productive Soviet physicist. He was instrumental in the advancement of Soviet nuclear and thermonuclear weapons, and also was an invaluable assistance in the fields of adsorption and catalysis, shock waves, nuclear physics, particle physics, astrophysics, physical cosmology, and general relativity. In 1914, he was born into a Jewish family in Minsk, now called Belarus. Four months after his birth, he and his family...

2004-10-19 04:45:43

Radio Telescope -- In contrast to an ordinary telescope, which produces visible light images, a radio telescope "sees" radio waves emitted by radio sources located anywhere in the Universe, typically by means of a large parabolic ("dish") antenna, or arrays of them. The best-known (and largest) radio telescope is in Arecibo, Puerto Rico. A well-known radio telescope being an array of antennae is the Very Large Array (VLA) in Socorro, New Mexico. The largest (100-meter diameter) and most...

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Word of the Day
  • A somewhat riotous parade, accompanied with the blowing of tin horns, and other discordant noises; also, a burlesque serenade; a charivari.
'Callithump' is a back-formation of 'callithumpian,' a 'fanciful formation' according to the Oxford English Dictionary. However, the English Dialect Dictionary, says 'Gallithumpians' is a Dorset and Devon word from the 1790s that refers to 'a society of radical social reformers' or 'noisy disturbers of elections and meetings.'