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Astro Earth - February 2008

Solving the unwanted email problem

February 27th 2008 09:15
Unsolicited emails can be the Bain of the internet for example you put in a link with your email address for a blog or a webpage and very soon you get a flood of unwanted emails.
The problem is mostly related to Email harvesters {spambots}. These email spam bots crawl the internet via search engines to find and extract email addresses from webpages. Other email harvesting techniques us the old sign up routine , where by you sign up for a monthly specials information etc.

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Mystery radio pulse detected

February 27th 2008 05:03
A mysterious radio pulse a ‘glitch’ was found on August 21 2001. It was a short radio burst of energy, a pulse showing extremely strong characteristics.
David Narkevic, then an undergraduate student astronomer found the pulse lasting no more than 0.005 second was discovered while searching for the signatures of pulsars in an archive of radio data recorded some years previously by the 210-foot-wide Parkes radio telescope in Australia.
The data originated from a survey of the Magellanic Clouds that included 480 hours of observations. [ talk about finding a needle in a galactic haystack] The brief burst he found is not from a pulsar it's a single solitary blip. It doesn't appear in other Parkes data scans made in the same region of the sky. The pulse did not show up again, nor did it make an appearance in two sets of follow-up observations made since the initial discovery



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Looking back in Time

February 23rd 2008 08:13
M1 The Crab Nebular: image NASA

Every time you look at the night sky you are looking back in time.
The remains of a spectacular explosion of a supernova within the Crab Nebular (M1) recorded by the Chinese in 1054 has pulsar in its centre spinning at the rate of 30 times per second. The light or (ancient photons as I like to call them) left the nebular some 6500 years ago, which takes as back to year 4493 BC. There is a suggestion according in ancient chronicles that early Mesopotamian cultures in now present day Iraq and also in some parts of Egypt near the Nile were entering the Neolithic age


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Holey Mars

February 20th 2008 08:36
Images obtained from the Mars Odyssey Orbiter revealed a series of dark “spots” or "holes" on the surface of Mars.
Although the images are puzzling there are believed to be entrances to underground caverns. The Odyssey space craft has photographed numerous” Spots” or Holes some with the diameter of around 250 meters or 820ft.

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The search for E.T. continues

February 15th 2008 08:36
The Allen Telescope Array (ATA) is a joint effort of the SETI Institute and the Radio Astronomy Laboratory at the University of California, Berkeley. The ATA is a radio interferometer that is dedicated to cutting-edge astronomical research and a simultaneous search for signals of intelligent, extraterrestrial origin.
An interferometer consists of two or more separate telescopes connected together. An interferometer can consist of two or more telescopes either optical or in this case radio telescopes that combine their signals thus having the power of one single large telescope. A collection of small antennas now costs considerably less than a single, large dish.

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The Earth is " Ringing"

February 12th 2008 07:07
The Earth is ringing…..why is it ringing? all matter has a resonate frequency. Although we can’t hear the actual ringing sound we can detect it. The driving force that causes the earth to “ring” comes from the Sun.
Very low-frequency sound resonate throughout the Sun’s interior like vibration patterns resonating in a bell.
The loudest of the solar notes have frequencies centered around 0.003 hertz, or one vibration every 5 minutes. (Talk about a bass note) These vibrations cause the Sun's photosphere (surface) to move up and down slightly


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Welcome to February Night Sky guide

February 9th 2008 07:25
This month sees the return of Saturn to our night skies also Mars is still around.
The Moon and Mars in "close" proximity can be see on February the 15th.

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Comet's Tail Not A Happy One

February 5th 2008 06:05
NASA's twin spacecraft called STEREO recorded the first images ever taken so far of a collision between a solar "hurricane", called a coronal mass ejection (CME), and a comet. As you may recall late 2007 Comet 17P/Holmes did experience a "disconnection event"17P/ Holmes became suddenly brighter when approaching the Sun.

CMEs are large clouds of magnetised gas ejected into space by the sun. They are violent eruptions with masses upwards of a few billion tons traveling anywhere from 100 to 3,000 kilometers per second (62 to 1,864 miles/second


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Image Of Halley's Comet taken March 8, 1986 Credit: W. Liller, Easter Island, part of the International Halley Watch (IHW) Large Scale Phenomena Network.


The summers where long and the stars clear and bright, living on a farm in rural Australia had its advantages


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