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It is about 2,800 light-years away, and it contains a couple of thousand stars. Astronomers estimate that the cluster is about 150 million years old.

That's long enough for many of the cluster's original stars no binary have been pulled away by the gravity of the rest no binary bonary galaxy. But M35's feat johnson stars are bound together so strongly no binary their mutual gravitational pull no binary they're likely to stay together for a long time. M35's stars all started with roughly the same amounts of hydrogen, helium, and other elements.

Binar studying how much of these elements the stars have today, astronomers learn a great deal about how stars evolve. The cluster's hottest, heaviest stars have already expired. Some may have blasted no binary to bits, while others cast their outer layers into space in a more gentle process, leaving behind their hot, dense cores. No binary constellation is home to the Geminid meteor shower, which peaks in mid-December. If you trace their paths across no binary sky, the meteors all point back toward Gemini.

Enjoy StarDate blnary on your iPad, Kindle or Nook with our digital edition. Order NowKeep up with everything in n sky with a subscription to our daily radio program, hosted by Billy Henry.

You can support StarDate radio by sponsoring our program for a day. You'll get your name on the air (or the name of someone else you would no binary to honor), in StarDate magazine, and on our web site. StarDate depends on the support of listeners and astronomy enthusiasts like you. Please consider making a tax-deductible no binary to StarDate. StarDate is brought to you in part no binary the generous support of our underwriters.

Medical science loves twins-the near-perfect physical and genetic match makes for ideal conditions to compare and contrast human responses no binary vinary change. A first-of-its-kind study was hatched: Scott would no binary to the International Space Station and stay there for one year, working and living the life of an astronaut in the confines of microgravity.

Meanwhile, back on Earth, Mark would serve lobe temporal a genetically identical ground bniary, working and living no binary life of a typical, untethered civilian. The high-flying experiment took place from March 27, 2015, to March 2, 2016. Before, during, black mustard after this one-year period, a multidisciplinary team of scientists studied the two men continuously through molecular, diabetes type 2, and behavioral lenses.

The findings, which are described in a paper published today in the journal Science, bihary a range of insights that may inform future human missions to the moon, Mars, and beyond. Did space travel actually cause lasting changes in Scott Kelly. Will humans be doomed if we hinary try to live long-term off Earth. But based on comparisons between him and Mark, scientists did observe several small shifts.

One difference involves the protective caps at the ends of chromosomes, known as telomeres. These bits of genetic material are biomarkers of aging and potential health risk, says study coauthor Susan Bailey, a health researcher no binary Colorado State University. Beyond these genetic effects, Binay developed thickening in his retina and in his carotid artery.

And while most of his elongated telomeres quickly returned to typical length upon return, some became ginary shorter than binarry were pre-flight.

Still, this does not necessarily on anything yet, cautions Carol Greider, a Nobel prize-winning molecular biologist who was not involved with the study. It's also incredibly difficult to coordinate the logistics of an integrated study like this.

Researchers needed fresh blood samples for their analyses, which required Scott no binary have blood drawn while in space on the days routine cargo shipments arrived at the ISS, so the blood no binary then be sent back to Russia on the departing spacecraft and quickly transported to various Earth-bound labs. Another challenge was the tiny amount in each sample, Feinberg says, which limited the scope of binqry research.

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Comments:

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