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THE WORLD AROUND YOU
Mountain Views News Saturday, February 19, 2011
NASA Releases Images of Man-Made Crater on Comet
NASA’s Stardust spacecraft returned new images
of a comet showing a scar resulting from the 2005
Deep Impact mission. The images also showed the
comet has a fragile and weak nucleus.
The spacecraft made its closest approach to Comet
Tempel 1 on Monday, Feb. 14, at 8:40 p.m. PST at
a distance of approximately 111 miles. Stardust
took 72 high-resolution images of the comet. It also
accumulated 468 kilobytes of data about the dust
in its coma, the cloud that is a comet’s atmosphere.
The craft is on its second mission of exploration
called Stardust-NExT, having completed its prime
mission collecting cometary particles and returning
them to Earth in 2006.
The Stardust-NExT mission met its goals which
included observing surface features that changed in
areas previously seen during the 2005 Deep Impact
mission; imaging new terrain; and viewing the
crater generated when the 2005 mission propelled
an impactor at the comet.
“This mission is 100 percent successful,” said
Joe Veverka, Stardust-NExT principal investigator
of Cornell University, Ithaca, N.Y. “We saw a lot
of new things that we didn’t expect, and we’ll be
working hard to figure out what Tempel 1 is trying
to tell us.”
Several of the images provide tantalizing clues
to the result of the Deep Impact mission’s collision
with Tempel 1.
“We see a crater with a small mound in the center, and it appears
that some of the ejecta went up and came right back down,” said
Pete Schultz of Brown University, Providence, R.I. “This tells us
this cometary nucleus is fragile and weak based on how subdued
the crater is we see today.” Engineering telemetry downlinked
after closest approach indicates the spacecraft flew through waves
of disintegrating cometary particles including a dozen impacts that
penetrated more than one layer of its protective shielding.
“The data indicate Stardust went through something similar
to a B-17 bomber flying through flak in World War II,” said Don
Brownlee, Stardust-NExT co-investigator from the University of
Washington in Seattle. “Instead of having a little stream of uniform
particles coming out, they apparently came out in chunks and
crumbled.”
While the Valentine’s Day night encounter of Tempel 1 is
complete, the spacecraft will continue to look at its latest cometary
obsession from afar.
“This spacecraft has logged over 3.5 billion miles since launch, and
while its last close encounter is complete, its mission of discovery
is not,” said Tim Larson, Stardust-NExT project manager at JPL.
“We’ll continue imaging the comet as long as the science team can
gain useful information, and then Stardust will get its well-deserved
rest.”
Stardust-NExT is a low-cost mission that is expanding the
investigation of Comet Tempel 1 initiated by the Deep Impact
spacecraft. The mission is managed by JPL for NASA’s Science
Mission Directorate in Washington. Lockheed Martin Space
Systems in Denver built the spacecraft and manages day-to-day
mission operations.
You can contact Bob Eklund at: b.eklund@MtnViewsNews.com.
Tempel 1 Impact Site (unannotated) This pair of images shows the before-and-after
comparison of the part of comet Tempel 1 that was hit by the impactor from NASA’s Deep
Impact spacecraft. The left-hand image is a composite made from images obtained by
Deep Impact in July 2005. The right-hand image shows the same region as viewed by
NASA’s Stardust spacecraft six years later, on Feb. 14, 2011 Photo courtesy NASA
Ask jai……
Ask jai is a weekly column that will strive to honestly answer your job search questions relating
to job searching techniques, networking skills, resume writing and interviewing. The employment
situation is getting better, however, it is still a challenge finding were the jobs are located and how to
get pass the “gate-keepers”. As an Executive Recruiter I was privy to working directly with Corporate
Recruiters and understanding their process in selecting which candidates to interview and hire. I will
candidly answer your questions, possibly bluntly answering you questions, but I will be totally honest.
My objective is to help you achieve your employment goal.
STILL THE CHAMP
Q: I recently became unemployed and would like to take a breath and time-off before making a move
back into employment. I would like to know your opinion on simply devoting my time to volunteering,
especially in this economy. Elanore
I think it is great if you can take time to volunteer. I truly believe everyone should do it….. if they can
afford it. Only you can make the determination. Becoming unemployed can be a little unsettling, however,
it is an excellent time to take inventory and evaluate your career and life goals. This might be the right time
to consider pursuing an industry, career or experience you have always wished you could. Well, here is
your wish or the opportunity. Now is the time to pursue your dream job, develop a business, or volunteer.
Volunteer only if you really have the money and time to do so. Volunteering can be very fulfilling in giving
back or paying forward as they say. Your previous work experience and skills can be very valuable to any
non-profit organization and possibly to a profit driven business.
The process for volunteering is very similar to applying for employment with any organization. The
justification for this is organizations, non-profits, or businesses want to be sure you are qualified and have
the skills that will bring value to their organization. You will need a resume and a cover letter. The resume
should include an objective line. That line might read: Director of Marketing seeking a Volunteer Position.
The cover letter will be your essential document to address your passion and commitment regarding their
social or business objectives. Include a paragraph that describes your accomplishments and how your skills
and experience could assist their organization. You will need to address why or how you can volunteer
your time. Be prepared that the screening process for volunteers can be very rigorous. These organizations
have to be sure they will be working with very reputable and trustworthy volunteers. I have known some
non-profits that have declined applicants for volunteer work. Looking for the right volunteer position can
be just as time-consuming as looking for employment. As I always say do your homework, research the
organizations or businesses before moving forward. Attend networking and non-profit events to build
your prospective contact list. Then start e-mailing, calling or even cold-calling. Send your resume out to
numerous organizations. Visit volunteering websites in your immediate area for information. Here are a few
for you to start with: www.volunteermatch.org, www.volunterringinamerica.org, www.volunteerlosangeles.
com . Do not volunteer too long. The more time you stay unemployed the harder it will be for you to find
employment. However, your volunteer experience could eventually result in employment.
Everything you ever wanted to know about how to get a job…but did not know who to ask. Ask jai. Send
your questions to: jai@resumeandcareerservices.com or visit the website at www.resumeandcareerservices.
com
In computer news the big story this week appears to be the domination of
a special tournament of Jeopardy that pitted 2 of the games all-time greats,
Ken Jennings and Brad Rutter, against a supercomputer running an Artificial
Intelligence program called “Watson”. This program attempts to solve one
of the most complex problems in computer programming and that is how
does one successfully program a machine to respond to and correctly answer
questions posed to it in natural language. Although the average computer
can do calculations many times faster than the average human, turning those
calculations into the equivalent of human thought has been an objective of
computer scientists for years and has often thought to be unattainable. The IBM
Watson project appears to have broken that barrier. This week’s special round
of Jeopardy saw an impressive display of Artificial Intelligence programming
as Watson simply dominated all rounds of play during the tourney. According
to statistics compiled for the competition ,Watson answered more than
95% of the questions it buzzed in on first correctly. On the first day of the
competition although Watson made a strong showing ,it did have problems
with deciphering some of the clues posed to it and crashed many times. It
reportedly took over four hours to complete that days’ taping. Watson also
missed a few questions that made it apparent to even non-computer experts
that the supercomputer sometimes struggled . At one point in the match Ken
Jennings was tied with Watson. But by the next day those problems had been
cleared up and Watson never looked back.
The Watson program had a few strengths that led it victory. As a computer
Watson doesn’t forget anything it has ever learned and it also doesn’t get
nervous. It can’t be bluffed because it’s not cueing in on emotional cues from
other players in the game. And because Watson is a high-powered calculation
machine, it’s pretty good at ….calculations. Watson is a statistical dynamo
without human peer and uses its powers to wade through mountains of data
in nanoseconds to arrive at the best statistical response to any query posed
to it. And judging by the results of the match Watson is pretty darned good
at coming up with the best statistically-advantageous answer. But there was
one type of question where Watson performed poorly on both days of the
competition but both human challengers did better than Watson. That type
of question - the question where there was no clue - or as it’s better know “the
wild guess”.
So don’t worry if the events of the last few days may make it appear that the
arrival of …”our new computer overlords” is nigh. We are still the champs of
the wild guess and it doesn’t appear that anyone or anything will be taking our
title anytime soon.
Happy Tails
by Chris Leclerc
Chris and Canyon Canine will be back next week. In the
meantime, here’s a health tip for your best friend courtesy of
Chris Leclerc and www.canyoncanine.com
ADDING CHERRIES TO YOUR DOG’S DIET CAN HELP HIPS
(NAPSI)—Good news for dogs and their people. Long walks may soon be
more comfortable for both-thanks to a surprising fruit.
Research at Michigan State University’s Bioactive Natural Products and Phytoceuticals
Laboratory found tart cherries are not only loaded with antioxidants,
but they may help avoid discomfort by supporting the body’s normal
inflammatory response associated with daily exercise and activity.
These findings led to the development of new, all-natural, functional soft
chews and baked treats for the active canine.
Overby Farm worked closely with university experts and practicing veterinarians
to create Hip Bones-The Original Cherry Dog Treat, Hip Bones, Jr.,
and two soft chewable products: Hip Flex and Hip Flex Feline. They feature whole tart cherries, tart cherry
concentrate, ground flaxseed, ginger, cinnamon, glucosamine and calcium in all-natural recipes supporting
healthy hips, bones and joints.
For more information and to request a free sample or to order products, visit www.overbyfarm.com or call
888-628-8783.
BE MINE OR ELSE!
Did you have a nice
Valentine’s Day? I hope
so. I used to think that
Valentine’s Day was a
polarizing topic starkly
dividing the loved from
the lonely. It sure felt
that way in junior high!
While you’d hope everyone outgrew
Valentine’s angst with puberty, sadly that’s
not the case. Valentine’s movies use humor
to remind us that some otherwise well-
adjusted adults harbor personal vendettas
against the holiday. While we wish such
melodrama were limited to the silver
screen, I’m sure we all can name a couple
friends who get very bitter around this time
of year due to the lack of a significant other.
Typically they either adopt a smug attitude
that “love is overrated,” or they straight out
decry their situation with all the salty tears
of a Sarah Bernhardt tragedy “Here it is –
another year alone!”
In elementary school Valentine’s Day was
still pretty fun. We decorated brown lunch
sacks with doilies, sequins, and glitter and
passed out little folded cards into other
kids’ blinged bags. These valentines were
often of superheroes or Disney princesses
with equally cheesy messages. “Be my
Wonder Woman & I’ll be your Super Man!”
“To my beautiful friend, have a royal
Valentine’s Day!” They came in boxes of
25 or so, and there was usually an oversized
card intended for the teacher. But kids
sometimes used it to single out their BFFs
or their crush. Once distribution was done,
we’d go through our bags, set aside the
cards from our friends, and then strip the
rest of their sole redeeming value – candy.
We’d always pick through the Sweethearts,
looking for suggestive phrases (or what
passed as suggestive to second graders in
the 90’s). Sweethearts were never actually
eaten. (Although I read they’ve changed
the recipe to make them “softer.” But don’t
worry if you’re loyal to the hard, chalky
ones. Brach’s still makes those.) Then the
boldest kids would ask their friends to pass
this much-handled candy to his or her
beloved. Giggles erupted as the recipient
read “Let’s Kiss.” Yeah, it didn’t take much
to make us blush back then.
There are some groups of happy Valentine
adults out there, and I hope you are one
of them. There’s usually at least one
couple that always goes whole hog with
roses, chocolate, and all the other familiar
accoutrements. This is the woman who
comes to work swooning about the floral
arch her husband sent, their extravagant
dinner at that exclusive new restaurant,
and the Tiffany tennis bracelet whose
weight seems to have already lengthened
her arm. We are happy for her, but can’t
deny that the narrative grates on you after
the fourth telling.
Then there are folks who view Valentine’s
Day as a huge gimmick for the restaurant
and greeting card industries (my husband
and I belong to this group). Sure, we still
buy cards and support the restaurants (take
out, because service on Valentine’s Day is
notoriously bad, and because it beats our
own cooking). We’re not the easiest people
to shop for, so we’re going to buy him a case
for his phone and a purse for me that will fit
my new “pocket” sized Bible. In some ways
my husband lucked out marrying me (I
wouldn’t know a Louis Vuitton if it wore a
name tag). Sure, we might not be the most
romantic, but at least we’re comfortable,
and at the end of the day, isn’t that really all
anyone wants on Valentine’s Day?
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