10
THE WORLD AROUND US
Mountain Views News Saturday, April 7, 2012
FLYING IN FORMATION – Around the Moon at 3,600 mph
The act of two or more aircraft flying together in
a disciplined, synchronized manner is one of the
cornerstones of military aviation, as well as just
about any organized air show. But as amazing as
the U.S. Navy’s elite Blue Angels or the U.S. Air
Force’s Thunderbirds are to behold, they remain
essentially landlocked, anchored if you will, to
our planet and its tenuous atmosphere. What if
you could take the level of precision of these great
aviators to, say, the Moon?
“Our job is to ensure our two GRAIL spacecraft are
flying a very, very accurate trail formation in lunar
orbit,” said David Lehman, GRAIL project manager
at JPL. “We need to do this so our scientists can get
the data they need.”
Essentially, trail formation means one aircraft (or
spacecraft in this case), follows directly behind the
other. Ebb and Flow, the twins of NASA’s GRAIL
(Gravity Recovery And Interior Laboratory)
mission, are by no means the first to synch up
altitude and “air” speed while zipping over the
craters, mountains, hills and rills of Earth’s natural
satellite. That honor goes to the crew of Apollo
10, who in May 1969 performed a dress rehearsal
for the first lunar landing. But as accurate as the
astronauts aboard lunar module “Snoopy” and
command module “Charlie Brown” were in their
piloting, it is hard to imagine they could keep as
exacting a position as Ebb and Flow.
“It is an apples-and-oranges comparison,” said Lehman. “Lunar formation in Apollo was about getting
a crew to the lunar surface, returning to lunar orbit and docking, so they could get back safely to
Earth. For GRAIL, the formation flying is about the science, and that is why we have to make our
measurements so precisely.”
As the GRAIL twins fly over areas of greater and
lesser gravity at 3,600 mph, surface features such as
mountains and craters, and masses hidden beneath
the lunar surface, can influence the distance between
the two spacecraft ever so slightly.
How slight a distance change can be measured by the
science instrument beaming invisible microwaves
back and forth between Ebb and Flow?
How about one-tenth of one micron? Another way to
put it is that the GRAIL twins can detect a change in
their position down to one half the width of a human
hair (0.000004 inch). Any change in separation
between the two twins greater than this will be duly
noted aboard the spacecraft’s memory chips for later
downlinking to Earth. Working together, Ebb and
Flow will make these measurements while flying over
the entirety of the lunar surface.
Why would scientists care about such a tiny change of
distance between two spacecraft?
“From the data collected during these minute
distance changes between spacecraft, we will be able
to generate an incredibly high-resolution map of the
Moon’s gravitational field,” said MIT’s Maria Zuber,
principal investigator of the GRAIL mission. From
that, we will be able to understand what goes on
below the lunar surface in unprecedented detail.”
“Next time you look up and see the Moon, you might want to take a second and think about our two
little spacecraft flying formation, zooming from pole to pole at 3,600 mph,” said Lehman. “They’re up
there, working together, flying together, getting the data our scientists need. As far as I’m concerned,
they’re putting on quite a show.”
You can contact Bob Eklund at: b.eklund@MtnViewsNews.com.
An artist’s depiction of the twin spacecraft (Ebb and Flow) that comprise NASA’s Gravity Recovery
And Interior Laboratory (GRAIL) mission. As the GRAIL twins (Ebb and Flow) fly over areas
of greater and lesser gravity at 3,600 mph (5,800 kilometers per hour), surface features such as
mountains and craters, and masses hidden beneath the lunar surface, can influence the distance
between the two spacecraft.
For more information about GRAIL, please visit http://solarsystem.nasa.gov/grail.
PROTECTING YOUR
(DIGITAL) VALUABLES
(NAPSI)—Most people have experienced that uneasy feeling when they lose something valuable: a
ring, a phone, money, even a credit card. But how would you feel if you woke up one day to find that
you’d lost your entire library of photos, videos or the digital music library you’d spent so much time—
and money—creating? It could happen. In fact, if you ask the experts, it will happen. All computers
will fail eventually. So what can you do about it?
Digital storage devices such as hard drives from Western Digital (WD) are one solution that provides
great value and reliability. In a recent survey, nearly 55 percent of consumers said they do not back
up or protect the digital content on their computer because either they don’t know how or think it’s
too difficult. What makes this statistic more interesting is that nearly 60 percent of the same survey
participants said they would miss their computers and its contents most if lost or stolen.
Today, the process of backing up important data on your computer is a simple plug-and-play process,
so why take the risk?
There are a variety of inexpensive, reliable and easy-to-use solutions that are available to suit your
lifestyle. For active and mobile consumers, the My Passport portable drives by WD are an ideal solution,
small enough to fit in your pocket but large enough to store and protect thousands of photos,
dozens of movies and your entire music library.
My Book external hard drives offer larger capacities (up to 3 terabytes), sit on your desk and copy all
your files for protection against computer crashes and general failures.
For the network-connected home, the My Book Live personal cloud device plugs directly into your
wireless router and allows content stored on all computers in the home to be backed up on the single
drive. And, because it is attached to your router, you can access all the content from your laptop, iPad,
iPhone or other mobile device from anywhere in the world using WD’s WD 2go mobile application
for iOS, Android and laptops.
People insure cars, homes and lives. Using a digital storage device, such as those made by WD, can
be a smart way to protect all your precious digital assets as well. For more info visit www.wdc.com.
THE FILTHY
LEADING THE
BLIND
Each week, there are numerous
ideas readily available for me to
craft into articles. Whether or not
those ideas should be published is
where the question lies. “Who’s
going to read this?” I ask myself. Even if the people I’m
worried about have never read my column, is there the
slightest possibility they might come across it? Many
an amusing topic has been trashed for these reasons.
Therefore, I can’t give you a winner every week. That
being said, I hope my landlord doesn’t read this, or at
least that he reads it with a sympathetic grain of salt.
It’s spring! I’m ecstatic, aren’t you? Winter and
its dreary, depressing darkness are finally gone and we
have a few glorious months of sunshine and warmth to
enjoy! In honor of the season, I decided to celebrate
with some wholesome spring cleaning! This wouldn’t
be a big deal, except for the fact that real cleaning for
me happens triennially at best.
I have no valid excuse. I’m very thankful for my job
and its desirable schedule. There’s nothing stopping
me from gallantly picking up a bottle of magic bubbles
and a scrub brush after work. But I’m a bit tired
after getting up early and putting in my eight hours.
Similarly, there’s no reason I couldn’t clean on the
weekends. But I spend those two days catching up
on all the other vital things I’ve neglected during the
week. I realize cleanliness is next to godliness, but
whenever the thought of cleaning comes to mind,
there always seems to be something more important
to do. I actually think cleaning can be therapeutic, like
weeding or deadheading roses. But once the pressure
of expectations and deadlines are added, cleaning
becomes a chore.
Any discussion on cleaning needs to delineate the
differences between it and “dejunking.” Cleaning
is fairly straight forward in that your only goal is to
defeat the dirt, dust, and scum. Dejunking is a whole
other animal. Dejunking involves heavy decisions, the
first being, “Should I keep this?” Let’s say the item in
question is a small ceramic butter dish purchased on a
family vacation during childhood. “I haven’t used or
seen it in five years, but it’s kind of sentimental, and
I might find a use for it someday.” My butter usually
doesn’t see the outside of its wrapper except when I
make brownies for someone. As you can guess, I rarely
(never) entertain, so any decorative butter dish of mine
would probably not be used for its intended purpose.
“But perhaps I could put something else in it…” You
can see how deliberations like this could go on forever.
Let’s say I decide to be heartless and get rid of my
beloved butter dish. I could drop it off at the Women’s
Club in town. But if my mom, who is a frequent
dropper there, sees it, she might be hurt. I’ll have to
take it to the Goodwill or some other charity. But
is it worth the drive just for one thing? I’ll have to
wait until I get at least a bag of stuff to warrant the
trip. While dejunking is about purging your home of
unnecessary clutter, there are underlying themes of
guilt and wastefulness. Here’s another example: I have
too many pairs of running shoes. They’re too old and
worn down to run in, but they can still cover someone’s
feet. So, do I throw them away or try to find a homeless
shelter? Should I just dump old magazines? My
apartment building doesn’t have a recycling bin. If I
give them away, I’ll have to rip off all the address labels,
which could take a while. Yes, you can see how most of
the work in dejunking goes on between your ears. This
can leave you exhausted after a few hours and you’ll
have little to show for it.
So, compared to dejunking, cleaning is a piece of
cake. (This time I wasn’t dejunking. So now I just have
clean junk.) While scrubbing away at my shower, I
thought that there must be a better way. The better way,
of course, is not allowing it get into this state in the first
place. In the olden days there were more housewives
who knew how to clean like pros. And they were home
all the time so that their bathrooms and kitchens never
got a chance to get creepy. They’d teach their daughters
their clever cleaning secrets. Thus, the clandestine
knowledge of keeping house was passed down through
the generations. But my grandma was the only lady
on her block who worked, so she never had time to
impart her cleaning wisdom to my mom. That left
Mom unequipped to train me in the cleaning arts. So
you see, it’s not my fault! I was doomed from the start!
As I succumbed to the caustic fumes rising from the
tub, I thought about all the cleaning columns in books
and films. In the stories, the writer is usually clueless
about cleaning and relies on alternative sources for
their information (e.g., “The Help” and “Christmas
in Connecticut”). I know if I had to give advice
about grease stains, it’d really be the filthy leading the
blind! Gee, if I had to do that, who would I ask for
good insights? My mind wandered into the world of
television, and I realized the best authority on cleaning
up messes is probably Dexter, from the show of the
same name. Hey, that’d be a great idea for an episode!
Some poor columnist could discover Dexter with one
of his victims, and then blackmail him by making him
give weekly tips about the best way to remove blood
stains from a shag rug! Wow, I hope someone on that
writing team reads this! (You can tell the bleach was
really getting to me.) Maybe they’ll find some use for
my cartoon rabbit in an episode, too! Yeah, I hope they
read it! As long as it’s not my landlord!
A RATTLING TALE
FROM A LOCAL TRAIL
During a hike in Monrovia last Spring, with one of
my four-legged friends, a yellow lab named “Gus”, we
were both enjoying the cool breeze and warm sunshine
as we ascended up the steep hill, when we had a rather
rattling encounter with a low-lying creature lurking in
the grass.
Like most dogs, Gus is a very curious canine. He notices
everything that moves around him, whether it be
a leaf falling from a tree, a bird flitting about in a bush,
or a squirrel scampering overhead across a power line.
When wind-blown objects or whimsical wildlife draw
Gus’s attention, it is easy for him to forget his typically
excellent “leash-side” manner, and bolt toward the object
in motion. I believe his random responses are most
likely related to his desire to catch and retrieve whatever
he can, in return for a moment of loving praise
from his human friend.
When he gets distracted by sudden peripheral movements,
I give Gus a slight tug on his leash, tell him “no”
in a strong voice, then reward him for responding to
my command with a pat on the head and calmly spoken
“good boy” in order to get him back on track with
me on the trail. Although birds, bugs and lizards are
most often what we might encounter during our walks
together, deer & coyote also appear quite regularly
in the brush-covered hillsides surrounding the areas
where we walk.
On this particular evening, we came across a creature
that took us very much by surprise! I am not sure if it
was Gus’s nose, ears or eyes that first drew his attention
to the would-be elusive crawling creature. Perhaps
it was a combination of all three. What I do know is
that whichever of his keen senses kicked in at the time,
immediately snapped him to attention and within a
split second he changed his direction toward the object
of interest. Naturally, I looked over to see what it
was that had captivated his undivided attention, and
when I did, I saw what I assumed was a sagebrush lizard,
which is a harmless reptilian we often see slithering
over the rocks and through the dirt along the trail.
Some sagebrush lizards get quite large, and as adults
they can develop a heavy coat of colorful scales, and a
broad head with shiny round piercing eyes. Lizards are
quite agile and they move very fast, which is why dogs
and cats love to go after them. It’s all about the challenge
of the chase! When Gus got close enough to the
reptile to scare it away, I was surprised to see that it did
not move, rather it remained still and held it‘s ground.
It was then that I realized our new-found friend was
not a lizard at all. My canine companion had just come
face-to-face with a snake lying low and lurking in the
grass!
Fortunately I managed to pull Gus away before the
snake made any swift movements, or had the opportunity
to strike. When we were far enough away for
my comfort level, we stood and observed it for a few
moments. I wanted to get a good look at it’s color and
shape, and try to figure out what kind of snake it was.
Per my estimate, the serpent was about 25 inches long
and at least an inch and a half wide at the center of
it’s belly. All I could think at that point was that Gus
could so easily have been bitten, if I had not been paying
attention and pulled him away promptly. Feeling
quite lucky that we had escaped what might have been
a revolting development, we continued on our way and
completed our hike.
When I got home that evening, I “googled” snakes in
the San Gabriel Mountains, and based on my memory
of what it looked like, I determined that the snake we
saw was most likely a Southern Pacific Rattler, which
is one of the most common rattle snakes in our local
foothills. Although it’s venomous bite can be lethal,
this snake is not known to be aggressive. Basically it
just wants to be left alone to continue it‘s quest for survival,
which explains why it refrained from striking,
and simply laid still in the grass.
While I was on-line I also did a little research to refresh
my memory on emergency procedures to follow,
for rattle snake bites in the wilderness. One of
the many important things I learned is that dogs who
spend any time on the trails or back roads of our local
canyons should receive a snake bite vaccine called
Crotalus Atrox Toxoid. The comparative results of vaccinated
dogs versus non-vaccinated dogs bitten, clearly
speaks for itself. In my opinion, it is definitely worth it
to have your dog vaccinated.
Other precautions that will help to avoid the risks and
detrimental results of a canine snake bite include being
alert and paying close attention to what the dog
shows sudden interest in, during your hike. Basic canine
training and maintaining control are very important
as well, as exemplified by my reaction when Gus
first saw the snake. If I had hesitated to call him back,
he would probably have been inquisitive enough to aggravate
the snake, in which case he would most likely
have been bitten. If a dog (vaccinated or not) is bitten
by a poisonous snake, immediate veterinary attention
is imperative.
In the case of a time-lapse between the biting incident
and veterinary care, be sure to keep the dog well-
hydrated in the meantime. If the dog is not willing to
drink on his own, use a syringe to force fluids down
his throat, and keep the dog as calm and relaxed as
possible.
Finally and perhaps most obviously - do not panic!
Stay focused and use your energy so you can handle
the situation efficiently.
The happy side of this otherwise seemingly “not-so-
happy” tale, is the fact that the rattle snake is known
to be way more passive than aggressive. I often like to
say “Love and let live”, but in this case, I will say “Love,
let live and leave it alone”. A snake will typically hide
in lieu of striking if left alone, so give it space, go on
your way and the snake will reciprocate in the same
respectful manner! Good advice for a safe, happy and
healthy hike!
Happy Tails
by Chris Leclerc
Mountain Views News 80 W Sierra Madre Blvd. No. 327 Sierra Madre, Ca. 91024 Office: 626.355.2737 Fax: 626.609.3285 Email: editor@mtnviewsnews.com Website: www.mtnviewsnews.com
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