Posts Tagged ‘astronomy’
Cosmic Dawn Universe Photo Essay
Cosmic Dawn, Looks Like Vishnu’s Conch
From Hubble Telescope.
COSMIC DAWN IN A NUTSHELL
Cosmologists have shown that the Universe began in a hot, dense, and featureless state about 13.7 billion years ago. The Universe we observe today, however, is rich with structures such as galaxies, the product of billions of years of expansion, cooling, and gravity.
The era between 380,000 and 100 million years after “the Big Bang” is called the cosmic dark ages; a time before the first stars formed to light up the Universe. Between 100 million to 1 billion years after the Big Bang, primordial gas collapsed gravitationally into galaxies, where it cooled and compressed enough to form the first stars, ending the dark ages. Light from these first galaxies ripped apart (“re-ionized”) and heated hydrogen atoms in the inter-galactic gas that filled the Universe. This “feedback” impacted future galaxy and star formation and left observable imprints which astronomers are just now beginning to detect. Understanding this epoch of reionization and first light is a key goal in Cosmology and Astrophysics.
http://www.as.utexas.edu/~gfigm/fri/nutshell.html
Cosmic Dawn
Credit: H. Ford (JHU/STScI), the Faint Object Spectrograph IDT, and NASA
Image Credit: European Space Agency & NASA Acknowledgment: E. Olszewski (University of Arizona)
Related articles
- Satellite maps oldest light in the universe (abc.net.au)
Black Holes Photo Essay
X-Ray SpexCredit: NASA Marshall CenterBlack holes are some of the universe’s most enigmatic and mysterious objects. Take a tour of some of the most famous ones in the cosmos. This image of the Cygnus X-1 binary star system is one of the first two focused high-energy X-ray images of any astronomer
I’m Forever Blowing BubblesCredit: Gallo et al., Westerbork radio telescopeThe cross marks the location of the black hole Cygnus X-1 in this radio image. The bright region to the left (east) of the black hole is a dense cloud of gas existing in the space between the stars, the interstellar medium.
Here Comes the Warm JetsCredit: ESO/L. Calçada Combining observations done with ESO’s Very Large Telescope and NASA’s Chandra X-ray telescope, astronomers have uncovered the most powerful pair of jets ever seen from a stellar black hole. The black hole blows a huge bubble of hot gas, 1000 light-years
Radio WavesCredit: NASA/JPL-CaltechThis artist’s concept shows a galaxy with a supermassive black hole at its core. The black hole is shooting out jets of radio waves. New research led by theoretical astrophysicist David Garofalo of NASA’s Jet Propulsion Laboratory in Pasadena,
Eat to the BeatCredit: Felipe Esquivel ReedArtist’s schematic impression of the distortion of space-time by a supermassive black hole at the center of a galaxy. The black hole will swallow dark matter at a rate which depends on its mass and on the amount of dark matter around it.
Portrait of the Quasar as a Young Black HoleCredit: NASA/JPL-CaltechIllustration of a young black hole, such as the two distant dust-free quasars spotted recently by the Spitzer Space Telescope.
Beware of the BlobCredit: NASA/CXC/M.WeissThis illustration shows what one of the galaxies inside a blob might look like, with the spiral arms of the galaxy in yellow and white, and two-sided outflow powered by the supermassive black hole buried inside shown in bright yellow.
Our Strange UniverseCredit: SRON
Eject, Eject!Credit: NASA/HubbleIn a Hubble picture, a red circle indicates an object in a distant galaxy that could be an ejected black hole.
Connecticut Aurora Shooting Identical Moon Phase Analysis.
I came across an article posting the phases of the Moon on the day of the shooting spree at Aurora on July 20th and Newtown on December 14 th.
Here are the Visuals.
Aurora Shootings July 20th
Newtown Shooting December 14th Moon Phase
You may note the identical images for the day.
Is there a correlation between Human Behavior and the Phases of the Moon?
Psychotic activity peaks during the Full and New Moon.
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At the University of Miami, psychologist Arnold Lieber and his colleagues decided to test the old belief of full-moon ?lunacy? which most scientists had written off as an old wives? tale. The researchers collected data on homicide in Dade County (Miami) over a period of 15 years ? 1,887 murders, to be exact. When they matched the incidence of homicide with the phases of the moon, they found, much to their surprise, that the two rose and fell together, almost infallibly, for the entire 15 years! As the full or the new moon approached, the murder rate rose sharply; it distinctly declined during the first and last quarters of the moon.
To find out whether this was just a statistical fluke, the researchers repeated the experiment using murder data from Cuyahoga County in Ohio (Cleveland). Again, the statistics showed that more murders do indeed occur at the full and new moons.
Dr. Lieber and his colleagues shouldn?t have been so surprised. An earlier report by the American Institute of Medical Climatology to the Philadelphia Police Department entitled ?The Effect of the Full Moon on Human Behavior? found similar results. That report showed that the full moon marks a monthly peak in various kinds of psychotically oriented crimes such as murder, arson, dangerous driving, and kleptomania. People do seem to get a little bit crazier about that time of the month.
That?s something most police and hospital workers have known for a long time. Indeed, back in eighteenth-century England, a murderer could plead ?lunacy? if the crime was committed during the full moon and get a lighter sentence as a result. Scientists, however, like to have a hard physical model to explain their discoveries, and so far there isn?t a fully accepted one. Dr. Lieber speculates that perhaps the human body, which, like the surface of the earth, is composed of almost 80 percent water, experiences some kind of ?biological tides? that affect the emotions. When a person is already on psychologically shaky ground, such a biological tide can push him or her over the edge.
BLOODY MOON
Crimes and violence aren?t the only things affected by the 29+ day full moon cycle. In the Journal of the Florida Medical Association, Dr. Edson J. Andrews writes that in a study of 1,000 tonsillectomies, 82 percent of postoperative bleeding crises occurred nearer the full than the new moon ? despite the fact that fewer operations were performed at that time! Clearly, the full moon is a dangerous time for surgery, and the dissemination of this knowledge should result in planning operations for the new moon.
Phases of the Moon are said to affect the bleeding of women during menstrual cycle and patients are reported to bleed more if Surgeries are performed.
Read from Wiki.
Scientific research on the theory
Some studies seem to offer limited support for lunar effects, but most fail to show any relationship between the phase of the moon and abnormal behaviour,[16] and meta-analyses have revealed that apparently significant results are likely to be statistical anomalies rather than indicative of a real effect.[17] In general, apparent positive findings have tended to be inconclusive, contradicted by other studies, or shown to be the result of statistical errors. For example, one study found a statistically significant correlation between lunar phase and hospital admissions due to gastrointestinal bleeding, but researchers acknowledged that the wide variation in the number of admissions throughout the lunar cycle limited the interpretation of the results.[18] Two other studies found evidence that those with mental disorders generally exhibit periods of increased violent or aggressive episodes during the full moon,[19][20] but a more recent study found no such correlation.[21] An analysis of mental-health data found a significant effect of moon phase, but only on schizophrenic patients.[22] Nor are such effects necessarily related directly to the behaviour of the moon. A study into epilepsy found a significant negative correlation between the mean number of seizures and the fraction of the moon illuminated by the sun, but this correlation disappeared when the local clarity of the night sky was controlled for, suggesting that it was the brightness of the night that influenced the occurrence of epileptic seizures.[23]
A reported correlation between moon phase and the number of homicides in Dade County was found, through later analysis, not to be supported by the data and to have been the result of inappropriate and misleading statistical procedures.[17]
Three studies carried out between 1959 and 1973 reported a 1 percent increase in births in New York following a full moon. However, a 1957 analysis of 9,551 births in Danville, PA, found no correlation between birth rate and the phase of the moon,[24] and a 2001 analysis of 70,000,000 birth records from the National Center for Health Statistics revealed no correlation between an increased birth rate and the full moon phase.[25]
A fifteen month study in Jacksonville, Florida revealed no lunar effect on crime or hospital room admittance.[26]
A meta-analysis of thirty-seven studies that examined relationships between the moon’s four phases and human behavior revealed no significant correlation. The authors found that, of twenty-three studies that had claimed to show correlation, nearly half contained at least one statistical error.[17]
Planet With No Star Video
We have been taught that a Planet rotates around a Star and that is what makes the Planet stable by maintaining it to stay in equilibrium; it is the reason for Seasons , Day and Night.
Now Astronomers have found a Rogue Planet with No Star to orbit.
Planet With No Star
“Astronomers using ESO’s Very Large Telescope and the Canada-France-Hawaii Telescope have identified a body that is very probably a planet wandering through space without a parent star. This is the most exciting free-floating planet candidate so far and the closest such object to the Solar System at a distance of about 100 light-years. Its comparative proximity, and the absence of a bright star very close to it, has allowed the team to study its atmosphere in great detail. This object also gives astronomers a preview of the exoplanets that future instruments aim to image around stars other than the Sun.
Free-floating planets are planetary-mass objects that roam through space without any ties to a star. Possible examples of such objects have been found before [1], but without knowing their ages, it was not possible for astronomers to know whether they were really planets or brown dwarfs — “failed” stars that lack the bulk to trigger the reactions that make stars shine.
But astronomers have now discovered an object, labelled CFBDSIR2149 [2], that seems to be part of a nearby stream of young stars known as the AB Doradus Moving Group. The researchers found the object in observations from the Canada-France-Hawaii Telescope and harnessed the power of ESO’s Very Large Telescope to examine its properties [3].
The AB Doradus Moving Group is the closest such group to the Solar System. Its stars drift through space together and are thought to have formed at the same time. If the object is associated with this moving group — and hence it is a young object — it is possible to deduce much more about it, including its temperature, mass, and what its atmosphere is made of [4]. There remains a small probability that the association with the moving group is by chance.
The link between the new object and the moving group is the vital clue that allows astronomers to find the age of the newly discovered object [5]. This is the first isolated planetary mass object ever identified in a moving group, and the association with this group makes it the most interesting free-floating planet candidate identified so far. “
http://www.eso.org/public/news/eso1245/
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While scientists have found objects they believe might be sunless planets in the past, they couldn’t say for certain whether such celestial objects were planets or brown dwarves (which are effectively failed stars). CFBDSIR2149 is the most conclusive such object yet, since it isn’t located anywhere near a bright star as far as the researchers can tell.
According to the researchers, this object is quite massive—it has 4 to 7 times the mass of Jupiter—and at 430 degrees Celsius (about 806 degrees Fahrenheit), it’s very warm (the ESO didn’t explain why CFBDSIR2149 may be so toasty, though). Also, they say, this maybe-planet is young in astronomical terms, at between 50 and 120 million years of age.’(techhive.com)
Rogue Alien Planet Found With No Star! Nibiru, Planet X? 2012 HD
‘Audio’ Of Star Vibration
Using the science of star seismology, astrophysicists turn star vibrations into audible sounds. This is the star Chi Hydrae. Complement with the Solar System set to music.
Vibration of Stars in Audio.
Does this not sound like basic Folk tune, especially of India?
