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Wednesday, September 7, 2011

Baby Star found close to Earth:AP Columbae



"ASTRONOMERS HAVE DISCOVERED the closest known infant star to our planet, and it wasn't born until 25 million years after the extinction of the dinosaurs!!"
"The star, called AP Columbae, is closer to Earth than previously thought and is around 40 million years old - a stellar newborn when compared to our own Sun which was created 4.6 billion years ago."
To read the entire article which the above quote was taken from please click on the following link:

http://www.australiangeographic.com.au/journal/baby-star-found-close-to-earth-ap-columbae.htm

"The star has been known about and studied for the past 15 years, but it wasn't realised it was so young and so close, until now," says co-author Simon Murphy, a PhD student from the Australian National University in Canberra."

Isn't it amazing that scientists have know about this star for 15 years and only recently understood how close AP Columbae is to the Earth!

To learn more about AP Columbae please visit these websites:

http://en.wikipedia.org/wiki/AP_Columbae

http://ibnlive.in.com/news/earths-closest-neighbouring-star-discovered/179944-19.html

Apparently AP Columbae is a red-dwarf star."A red dwarf (star) is a small, cool, very faint, main sequence star whose surface temperature is under about 4,000 K. Red dwarfs are the most common type of star." (source:http://www.enchantedlearning.com/subjects/astronomy/stars/startypes.shtml )

"In addition, they burn faintly and slowly compared with a more massive star like the sun. The 4.6 billion years it took for life to evolve on Earth would amount to barely a blip on a red dwarf's time line – measured in trillions of years. The sun's estimated life time? About 10 billion years."

"But a red dwarf's faintness also represents a potential Achilles' heel for habitable planets. A red dwarf's habitable zone is very close to the star, by some estimates between 10 million and 33 million miles out. (By contrast, the sun is 93 million miles from Earth.) And a red dwarf's habitable zone is narrow, perhaps only 400,000 to 4 million miles wide, depending on the mass of the star. The habitable zone in our solar system spans roughly 37 million miles."

"Some astronomers have argued that, among other downsides, a planet in a red dwarf's habitable zone would be vulnerable to massive flares and other outbursts from the star, bombarding it with high-energy particles, X-rays, and ultraviolet radiation at levels that would disrupt biological activity on Earth's surface."
"
Until now, however, many thought such activity occurred only for the first 1 billion or 2 billion years of a red dwarf's existence. Thus, if an Earth-mass planet formed beyond the reach of the flares, and migrated inward with time, the planet could take up its final position in the habitable zone after the young star calmed down."

"But the stars the team studied were some 10 billion years old, suggesting that energetic flaring continues, even if less frequently." (Source:http://www.csmonitor.com/Science/2011/0111/Red-dwarf-star-systems-Promising-for-life-but-watch-the-apocalyptic-flares/%28page%29/2 )

"Stars live out the majority of their lives in a phase termed as the Main Sequence. Once achieving nuclear fusion, stars radiate (shine) energy into space. The star slowly contracts over billions of years to compensate for the heat and light energy lost. As this slow contraction continues, the star’s temperature, density, and pressure at the core continue to increase. The temperature at the center of the star slowly rises over time because the star radiates away energy, but it is also slowly contracting. This battle between gravity pulling in and gas pressure pushing out will go on over the entire life span of the star." (source: http://aspire.cosmic-ray.org/labs/star_life/starlife_sequence.html )

To learn about the life of a small star I recommend you visit this website:

http://www.astro.keele.ac.uk/workx/starlife/StarpageS_26M.html

What a fascinating and interesting discovery!!

To learn more about Red Dwarf stars please watch the following video I found on Youtube. A big thank you to Tony Darnell for alowing me to use his video on my Blog!!

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Thoughts worth thinking about

"Our subconscious minds have no sense of humor, play no jokes and cannot tell the difference between reality and an imagined thought or image. What we continually think about eventually will manifest in our lives."-Sidney Madwed



Laws alone can not secure freedom of expression; in order that every woman and man present their views without penalty, there must be spirit of tolerance in the entire population.- Albert Einstein Too often we underestimate the power of a touch, a smile, a kind word, a listening ear, an honest compliment, or the smallest act of caring, all of which have the potential to turn a life around. - Leo Buscaglia



A person's true wealth is the good he or she does in the world. - Mohammed



Our task must be to free ourselves... by widening our circle of compassion to embrace all living creatures and the whole of nature and its beauty. -Albert Einstein



The best way to find yourself, is to lose yourself in the service of others. - Ghandi



The unselfish effort to bring cheer to others will be the beginning of a happier life for ourselves. - Helen Keller



Aim for success, not perfection. Never give up your right to be wrong, because then you will lose the ability to learn new things and move forward with your life. Remember that fear always lurks behind perfectionism. Confronting your fears and allowing yourself the right to be human can, paradoxically, make yourself a happier and more productive person. - Dr. David M. Burns



Life is as dear to a mute creature as it is to man. Just as one wants happiness and fears pain, just as one wants to live and not die, so do other creatures. -His Holiness The Dalai Lama



Mankind's true moral test, its fundamental test (which lies deeply buried from view), consists of its attitude towards those who are at its mercy: animals. And in this respect mankind has suffered a fundamental debacle, a debacle so fundamental that all others stem from it. -



Milan Kundera, The Unbearable Lightness of Being



The worst sin towards our fellow creatures is not to hate them, but to be indifferent to them. That's the essence of inhumanity. -George Bernard Shaw

Ego's trick is to make us lose sight of our interdependence. That kind of ego-thought gives us a perfect justification to look out only for ourselves. But that is far from the truth. In reality we all depend on each other and we have to help each other. The husband has to help his wife, the wife has to help the husband, the mother has to help her children, and the children are supposed to help the parents too, whether they want to or not.-Gehlek Rinpoche Source: "The Best Buddhist Writing 2005 pg. 165

The hostile attitude of conquering nature ignores the basic interdependence of all things and events---that the world beyond the skin is actually an extension of our own bodies---and will end in destroying the very environment from which we emerge and upon which our whole life depends.