Page 2 October 5, 2017
Seniors
Looking Up
Comet or Asteroid?
Hubble Discovers that a Unique
Object is a Binary
Press Release from Space Telescope
Science Institute, Provided
by Bob Eklund
NASA’s Hubble Space Telescope helped
an international team of astronomers find
that an unusual object in the asteroid belt
is, in fact, two asteroids orbiting each
other that have comet-like features. These
include a bright halo of material, called a
coma, and a long tail of dust.
Hubble was used to image the asteroid,
designated 300163 (2006 VW139), in September
2016 just before the asteroid made
its closest approach to the Sun. Hubble’s
crisp images revealed that it was actually
not one, but two asteroids of almost the
same mass and size, orbiting each other
at a distance of 60 miles.
Asteroid 300163 (2006 VW139) was discovered
by Spacewatch in November 2006
and then the possible cometary activity was
seen in November 2011 by Pan-STARRS.
Both Spacewatch and Pan-STARRS are
asteroid survey projects of NASA’s Near
Earth Object Observations Program. After
the Pan-STARRS observations it was also
given a comet designation of 288P. This
makes the object the first known binary
asteroid that is also classified as a mainbelt
comet.
The more recent Hubble observations
revealed ongoing activity in the binary
system. “We detected strong indications
for the sublimation of water ice due to the
increased solar heating — similar to how
the tail of a comet is created,” explained
team leader Jessica Agarwal of the Max
Planck Institute for Solar System Research,
Germany.
The combined features of the binary
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asteroid—wide separation, near-equal
component size, high eccentricity orbit, and
comet-like activity—also make it unique
among the few known binary asteroids
that have a wide separation. Understanding
its origin and evolution may provide
new insights into the early days of the
solar system. Main-belt comets may help
to answer how water came to a bone-dry
Earth billions of years ago.
The team estimates that 2006 VW139/288P
has existed as a binary system only for about
5,000 years. The most probable formation
scenario is a breakup due to fast rotation.
After that, the two fragments may have
been moved further apart by the effects of
ice sublimation, which would give a tiny
push to an asteroid in one direction as water
molecules are ejected in the other direction.
The fact that 2006 VW139/288P is so
different from all other known binary asteroids
raises some questions about how
common such systems are in the asteroid
belt. “We need more theoretical and observational
work, as well as more objects
similar to this object, to find an answer to
this question,” concluded Agarwal.
The research is presented in a paper, to be
published in the journal Nature this week.
The Hubble Space Telescope is a project
of international cooperation between NASA
and ESA (European Space Agency). NASA’s
Goddard Space Flight Center in Greenbelt,
Maryland, manages the telescope. The
Space Telescope Science Institute (STScI)
in Baltimore, Maryland, conducts Hubble
science operations. STScI is operated for
NASA by the Association of Universities
for Research in Astronomy, Inc., in Washington,
D.C. •
(BPT) - When it comes to health, perception
is not always reality. This is especially
true when considering how men care for
themselves when faced with a health condition.
In fact, while most men would say they
are more focused on their health than they
have been in the past, physicians report a
different truth. This difference is especially
concerning when it comes to treating chronic
conditions, because failure to follow treatment
regimens may lead to bigger health
problems in the future.
Missed appointments and opportunities
According to research from the American
Academy of Family Physicians, which
surveyed its member physicians, one in five
doctors said up to half of their male patients
failed to fill a prescription. In addition, one
in three doctors said that up to half of their
male patients did not take a prescription
as directed. Four in ten reported that up to
half of their male patients failed to follow
up with a regular routine test when ordered
for their condition.
In addition, nearly a quarter of surveyed
doctors said up to half of their male patients
failed to show up for planned follow-up visits.
These missed opportunities come at a
time when chronic conditions among men
continue to rise. According to the National
Ambulatory Medical Survey, diagnoses of
three common, yet potentially severe, conditions
all have increased year over year. The
data shows that cases of high blood pressure
(4 percent increase), high cholesterol (5
percent) and diabetes (2 percent) have all
seen notable increases.
“People may not take these conditions seriously
because they don’t have any noticeable
symptoms, and that’s a big mistake,” says
John Meigs, Jr., MD, president of the AAFP.
“High blood pressure and high cholesterol
have been called ‘silent killers’ for a reason.
If they aren’t controlled, they can lead to heart
attack, stroke or kidney disease. In addition
to these complications, uncontrolled diabetes
also can cause blindness, nerve damage and
loss of limbs.
“So it’s vital that men see their doctors,
get preventive care and follow instructions
for any chronic diseases they may have.”
Finding solutions for ongoing care
Fortunately, taking a more proactive approach
to health care is easier than most
men think. A visit to your family physician
is the first step toward taking charge of your
health and identifying any health issues. Your
family physician will help you learn about
any chronic conditions you might have and
how to treat them. For health information
that is easy to understand, visit familydoctor.
org. You’ll find a men’s guide to preventive
health care, and information about healthy
diets and weight control. Follow the advice
provided here, as well as your doctor’s
recommendations, and you’ll turn your goal
for good health from simple perception into
reality. •
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Marketing Manager - China.
Plan, direct marketing policies and
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Send resume - Phala Chem, Sunrider
International, 1625 Abalone Ave.,
Torrance, CA 90501.
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Senior Software Applications
Developer. Codes, unit tests, designs
& customizes applications software.
B.S. Computer Sc/Engineering + 5
yr exp req. Send resume to - Phala
Chem, Sunrider International, 1625
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Westchester, NK. Very large upper
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Be an adoption ambassador at our
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