From: LARRY KLAES (ljk4_at_msn.com)
Date: Sun Sep 25 2005 - 03:16:41 UTC
----- Original Message -----
From: AstronomyNewsletter<mailto:AstronomyNewsletter_at_maillist.astronomymail.com>
To: ljk4_at_msn.com<mailto:ljk4_at_msn.com>
Sent: Friday, September 23, 2005 6:14 PM
Subject: Astronomy.com Newsletter 9/23/2005
September 23, 2005
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NEWS
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THE SKY WAS FALLING
About 4 billion years ago, the inner solar system was an
inhospitable place. Incredible numbers of large objects pounded
the terrestrial planets - including Earth and the Moon - during a
period of some 100 million years. Although this is a brief amount
of time in geologic terms, this pounding, which astronomers call
the Late Heavy Bombardment, left permanent scars - craters on the
Moon, Mars, and Mercury. But why was the Late Heavy Bombardment
so intense? Where did the meteoroids and asteroids come from? A
team of astronomers may supply some answers in a paper published
in the journal Science (September 16, 2005) ...
READ MORE:
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MYSTERIES OF THE RINGS
During the Cassini spacecraft's first season of ring studies, the
The revelations paint a portrait of rings that's more dynamic and
READ MORE:
APOLLO ON STEROIDS
On January 14, 2004, the Bush administration declared a new mandate
NASA Administrator Mike Griffin revealed the space shuttle's successor.
READ MORE:
SEPTEMBER 2005 ASTRO BYTES
>>Planet, schmanet?: Nothing seems to have stirred the International
>>Hurricane season affects NASA again: Less than a month after
READ MORE:
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David Haworth captured a Harvest Moon rising September 17, 2005,
Laurence Harry imaged an aurora from his home in Nanaimo, British Columbia.
Jean-Yves Beninger imaged the emission nebula NGC 6357 from Singapore
If you have images you'd like to share with other
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JUMPING ON THE SCALES
The solar system's largest asteroid, 1 Ceres, measures 595 miles across.
To find Ceres, jump from Gamma Librae southward through the Zeta
Although watching an asteroid blot out the light from a distant star for
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Enter our 2005 Winter Sweepstakes today for a chance to view the
You could WIN the grand prize - an 8" Meade LX90! This extraordinary
Or win other great prizes from Meade! Click here for details:
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>>Hot solutions to dew
Many companies offer battery-powered heated ropes or straps specifically
It's important to note here that heat ropes don't appreciably heat up the
These dew-fighters supply just enough heat to stave off rampant heat loss
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RETURN TO THE MOON
With NASA's announcement of its new manned-spacecraft design,
Discuss here:
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Saturn-circling observatory has yielded remarkable findings, from
new structures to a rediscovery of the mercurial spokes the Voyager
spacecraft spotted two decades earlier. Cassini imaging team member
Joseph Spitale says, "We're seeing things that were theorized about
but never seen. This stuff is right out of a textbook simulation."
fluid than scientists thought ...
http://list.astronomy.com/UM/T.asp?A12.80.210.2.278623
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that refocused NASA on human exploration. The bold initiative called
for a return to the Moon and then a journey on to Mars. For the first
time since this announcement, NASA gave a preview of how it will get there.
Looking at the architecture, the spacecraft is reminiscent of Apollo
mission spacecraft. However, this is not your father's Apollo module ...
http://list.astronomy.com/UM/T.asp?A12.80.210.3.278623
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Astronomical Union (IAU) to define a planet quite like Caltech
astronomer Mike Brown's July 29 declaration that a new object his
team discovered should be considered a tenth planet. The object,
temporarily known as 2003 UB313 and nicknamed "Xena" by Brown and
his colleagues, is larger than Pluto.
Hurricane Katrina damaged NASA's Stennis Space Center in southern
Mississippi and Michoud Assembly Facility in New Orleans, the space
agency is bracing for another storm. With the threat posed by Hurricane
Rita to the greater Houston area, NASA closed Johnson Space Center today.
http://list.astronomy.com/UM/T.asp?A12.80.210.4.278623
READER GALLERY
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above the Columbia River near Washougal, Washington.
Click here to view:
http://list.astronomy.com/UM/T.asp?A12.80.210.5.278623
Click here to view:
http://list.astronomy.com/UM/T.asp?A12.80.210.6.278623
July 14, 2005.
Click here to view:
http://list.astronomy.com/UM/T.asp?A12.80.210.7.278623
newsletter readers, attach them to an e-mail sent to
mailto:jmcgovern_at_astronomy.com<mailto:jmcgovern_at_astronomy.com>. Make sure you include
the date, location, equipment, and methods used in
taking and processing each image in your e-mail.
THE SKY THIS MONTH
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Not surprisingly, it was the first asteroid to be discovered. Although
it currently plies the modestly rich star fields of Libra the Scales,
Ceres glows at 9th magnitude, so it remains brighter than the typical
background star in this area.
triplet to the area depicted on the finder chart at right. Then zoom
in on the big rock's track. Chances are the first point of light you
see close to the predicted position will be Ceres. To be sure, make
a quick sketch of the region and return a night or 2 later to confirm
that your suspect object has moved slightly.
a few seconds used to be a rare event, it now occurs almost monthly. No,
such events aren't becoming more common, we just can predict them for
fainter stars and asteroids thanks to improvements in star catalogs,
accuracy of asteroid orbits, and computer speed.
WINTER SWEEPSTAKES
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stars like never before!
telescope includes many exciting features and is a favorite of
astrophotographers and observers! The LX90 makes alignment a breeze
and includes superior optics, AutoStar controller, red-dot finder,
Periodic Error Correction, and much more. This telescope has a retail
value of $1,974.00!
http://list.astronomy.com/UM/T.asp?A12.80.210.8.278623
HOBBY TIP OF THE WEEK
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designed for dew-fighting. Warp them around edges of optics and you'll
solve to the problem of them cooling off. Not only does this fix work
for Schmidt-Cassegrain telescopes, but for Newtonian and Dobsonian
telescopes that have secondary mirrors prone to fog-up. (The main mirror
lies deep inside a "dew shield" of its own, at the bottom of a tube or
shroud-lined network of trusses.)
glass or metal they're touching. If such were the case, the telescope
might give off so much heat that distortions from air turbulence could
ruin the view through the eyepiece.
from the optics. If the night is particularly cool and damp, just dial up
the heater's output to keep even the heaviest dew under control. Even when
the heater is going full-throttle, however, the optics are hardly warm to
the touch.
THIS WEEK'S DISCUSSION
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are you confident of a return to the Moon by 2020?
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