Why sugar dissolves more easily in hot coffee?
The best lover, a mature woman Wednesday, October 27, 2010
Kidde Carbon Monoxide Detector Peak 18
.
In 1745, 39, politician, scientist and inventor, wrote a letter to a younger friend, explaining the virtues of marriage, but also advised him that if he wanted to marry would "take" a mature lover. These were their reasoning:
- As more experience and more "world" can hold pleasant conversations with them.
- decreases with age as beauty, try to promote other qualities. They do a thousand things, you know "to be" handled in any situation ... become more lists (one knows the old devil by devil)
- As past menopause, there is no problem of getting pregnant.
- By having less sex than girls, more thankful when they do.
- As night all cats are gray, the pleasure of corporal enjoyment with an older woman is at least equal or even better, since they have a "technical" more refined.
- As has kept other sex, you can not traumatize as with some girl when he does the first time.
pillín Uncle Franklin. What do you think Monica Bellucci as a mature woman?
Sources:
Myfivebest , Lapham's Quarterly
The best lover, a mature woman written by Javier Sanz in: Stories of History
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Reduce Excema Redness
If you think global warming is hard, does 11,000 million years across the universe went through what we might call a universal warming. The consequence of this initial heating was that ferocious blasts of radiation from black holes voracious stunted the growth of some small galaxies over a period of 500 million years. This is the conclusion reached by a group of astronomers led by the University of Colorado at Boulder, who used the new capabilities of the Hubble Space Telescope NASA to study the universe invisible and remote.
Using the newly installed Cosmic Origins Spectrograph, or COS, the team identified an age ago 11700 to 11.3 billion years ago when the universe started electrons primordial helium atoms - a process known as ionization. This process prevented heated intergalactic gas that collapse gravitationally to form a new generation of stars in some galaxies small. Less massive galaxies were unable even to maintain their gas, and escaped back into intergalactic space.
Professor of CU-Boulder, Michael Shull, the department of astrophysics and planetary sciences and his team were able to find the telltale sign of spectral absorption lines of helium in the ultraviolet light from a quasar - the bright core of active galaxies. The quasar shines through the clouds middle of what would be otherwise invisible gas, such as a streetlight shining through the fog. The beam allows for a core sample of the gas clouds that lie between the galaxies in the early universe.
The universe went through a wave of initial heat for about 13 billion years, when the energy from the first stars ionized hydrogen mass from the Big Bang. This time period is known as the time of Re-ionization, because hydrogen nuclei were originally in an ionized state shortly after the Big Bang, says Shull, a member of the faculty of the Center for Astrophysics and Space Astronomy CU-Boulder, or CASA.
A published article on the subject in the October 20 issue of the journal Astrophysical Journal
. The co-authors include researchers associated with France and CASA Kevin Charles Danforth, the researcher HOME postdoctoral Britton Smith and Jason Tumlinson of the Space Telescope Science Institute in Baltimore.
but Hubble data indicated that it would take another 2000 million years before the universe of ultraviolet radiation sources produce enough energy to perform the task of re-ionize the primordial helium that had been warmed by the Big Bang .
This radiation did not come from the stars, but of quasars, said Shull. In fact, the era in which the helium began to re-ionization corresponds to a transitional period in the history of the universe in which the quasars were plentiful.
The universe was a busy place then, said Shull. Galaxies that collided with increased frequency and supermassive black holes at the cores of galaxies with gas falling inside. Black holes became wildly part of the gravitational energy of this mighty mass of far-ultraviolet radiation that would be thrown out of galaxies. This heated the intergalactic helium from 8000 levels to almost 22000.
After helium reionization, the intergalactic gas was cooled again and the dwarf galaxies could continue its normal assembly. "I imagine that could have formed a few dwarf galaxies if there were no taken place re-ionization of helium, "said Shull.
So far, Shull and his team have only one line of sight from Hubble to measure the transition of helium, but the COS science team plans to use Hubble to look in other directions and see if the re-ionization of helium took place uniformly throughout the universe.
Author: Jim Scott
Original Date: October 7, 2010 Original Link
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Two massive planets are similar to Jupiter orbiting two stars recently discovered extremely sisters close - an unexpected finding, since the disturbing gravitational effects in most binary star systems usually interrupt the formation of planets. extrasolar planets discovered in orbit around the binary system NN Serpentis, which is located at 1670 light years from Earth.
The most massive of the two white dwarf stars is very small - the exhausted remnant left behind when a star dies Sun-like star is about 2.3 times the diameter of Earth, but a temperature of more of 49,700 degrees Celsius - nearly nine times hotter than the Sun's surface
The other star is larger but cooler, with a mass only one-tenth of the Sun The two stars are bound in an orbit very close.
The Big
Astronomers had a lucky break to observe the binary star system, given that it be in the same plane as the Earth, creating an eclipse every 3 hours and 7 minutes when the star largest passes in front of the child.
The resulting change in the brightness of the system acts as a highly accurate clock. Monitoring the eclipses, the team of astronomers was able to detect small changes in timing caused by the gravitational pull of two planets orbiting a star partner, and pull them by altering the schedule of eclipses.
The system's largest planet is about 5.9 times more massive than Jupiter. Binary stars orbiting once every 15.5 years land within striking distance of some 900 million kilometers. Closer, the second planet orbiting the binary pair every 7.75 years is land and 1.6 times more massive than Jupiter.
An international team of astronomers detected the planetary system using a wide variety of observations taken over two decades from various ground-based telescopes.
Parents binary
Although the discovery of planets outside our solar system is becoming increasingly common, only a tiny fraction of those planets have been found orbiting stars in binary or multiple systems. This is simply because, in these systems, there is little space between the stars forming planets.
Both NN Serpentis planets do not orbit around the binary stars, but the double star system was not always as compact as today. Before, when the current white dwarf star was a normal, twice as massive as the Sun, the two stars was separated by a much greater distance - such observable eclipses that have occurred once every two years.
When the most massive star ended his normal life consumption of hydrogen in its core, is inflated to form a red giant and then absorbed a second star in its diffuse outer sheath. The friction of the companion star moving inside the shell of the red giant finally brought the red giant lost 75% of its mass.
This left only the intensely hot core of the original star and a companion star orbiting relatively harmless now extremely close to the newly formed white dwarf. The
turbulent change from a normal of a compact double star with a hot white dwarf would have been even more dramatic for any planets present beforehand: the loss of 75% of the original mass of the star equivalent to a 75% loss in gravitational force.
This could easily result in the release of planets, sending them speeding through space. Or, simply, could have ended in a dramatic change in the orbit of the planets.
Second option
In a different scenario, planets around NN Serpentis could have been created for only a million years, when issued large amounts of dust and gas from the star to form a more massive version of a protoplanetary disk. From this material, the planets may have formed. That being the case, then it is possible that these massive planets were born, in fact, after the death of the star that allowed its creation.
The study results are published on-line in a recent issue of the journal Astronomy & Astrophysics
.
In a separate discovery, has recently found a Jupiter-sized extrasolar planet orbiting the star HR 7162, which is a binary star located to 49 light years away in the constellation Lyra. These recent findings are forcing astronomers to rethink theories about how planets form gas giants.
Author: Space.com Template
Original Date: October 26, 2010 Original Link
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