Monday, November 1, 2010

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"By combining astronomical and laboratory data, we found that 90% of the surface of Eris is composed of nitrogen ice and 10% by methane ice, which not at all very different from that of Pluto, "said David Cornelison, co-author and physicist at the University of Missouri State.

The epic journey of 10 years and 5000 million kilometers toward the edge of our solar system NASA probe New Horizons is already 50% completed. New Horizons will allow us a few years take the first look at the unknown planet Pluto.


transneptunian
The old world, who lives in a different light is not the Sun, visible to the eyes of cats, dogs and deer they see in infrared.

Some satellites of giant planets, as Ganymede and Callisto (Jupiter), Titan (Saturn) and Triton (Neptune) have sizes similar to the dwarf planets, and in some cases, similar compositions.

"trans-Neptunian objects interest us because they are leftover building blocks of the solar system formed," says the main responsibility for research, Cesar Fuentes, a professor at Northern Arizona University (USA) and former member Harvard-Smithsonian Center for Astrophysics.

I mean, as opposed to what is stated ut supra, predate the Sun has integrated its systems from other planets and moons aligned preexisting but not before producing a terrible event that left a scar visible in the craters and debris that remain erratic system.

The Trans-are on track to system integration, still almost as "exorbitant."

The Sun, as the collapsed object, should spin faster (like a pirouetting dancer pulling in her arms). But the sun turns slowly. Almost all the angular momentum in the solar system planets are in orbit. Ecuador And the Sun has an inclination of 7 degrees to the plane of the planets in orbit.

Each planet is unique, individual, personal, different and the same applies to the satellites.

The theory shows that it is difficult for a planetesimal is the size of 1 km. But then, to avoid fragmentation by collision, a body needs to be 1000 km enough gravity to hold the debris of a collision.

But the main message is that the solar system is a family. planets have been acquired in long intervals after the Sun was born. Thus, for signatures isotope in the solar system is something like DNA testing. family ties can be established, but do not have anything to do with the Sun!

Thursday, October 28, 2010

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amazing prize: the next 10 years


still remember the excitement I felt it a decade, when the first crew of the International Space Station arrived at the house brand. It seemed incredible to contemplate what was happening: we were about to begin to live permanently in space. We had started to leave that little egg we call Earth.

The last 10 years of research on the ISS have produced great things. Many are small and dark progress of which you never hear about, and who nevertheless are significant steps in their respective sciences.

For example, in vaccines against microbes in the development of new materials, or dietary measures to counteract the bone loss during space flight.


Photo: a protein crystals growing.

Here are a few blockbusters of the ISS, in the basic sciences:

  • One of the most exciting results from the ISS is confirmation that the common pathogens change and become more virulent for a special flight. This has huge implications for extended human missions. It is being studied furiously. Growth
  • protein crystals. The architecture of the crystals reduced-gravity becomes spongy, and it is possible to see in three dimensions without the effects of "flattening" the structure, which happens in gravity. Understanding the structure of any protein is essential for example when one wants to study a disease such as Chagas Mal. Knowing how proteins of the trypanosome that causes Chagas disease is a weapon to be able to find a compound that stops KO ideal.
  • Air quality is a major concern of any operation space. Therefore, studies with the instrument ANITA (Ambient Air Analyzer Interferometer) are calibrated to sniff 32 gaseous pollutants (such as ammonia, CO2, formaldehyde) in concentrations of only parts per million in the atmosphere of the ISS. The analyzer is nice because it allows immediate analysis, real-time
  • Advanced Studies is ASTROCULTURE have taught us that it is possible to grow plants using only part of the visible electromagnetic spectrum, and thus save energy without sacrificing the welfare of a seedling . We have learned to teach a root to find a way to grow if gravity, and have learned to coordinate the moisture and nutrients with great accuracy. Seeds were also obtained "space."
  • We have studied the embryos in microgravity (Fish eggs, insects, birds). And learned that the absence of gravity can affect embryo development, one way or another. For example, inner ear bones of quail embryos are larger than those of terrestrial quail. On the other hand, embryos produced less collagen space in their cells than the ground. The collagen is what forms the matrix between cells and cell. It is like the scaffolding which supports all our cells.
course, the list goes on and includes advances in the understanding of how reduced gravity plays on our central nervous system, the shape of our eyes, the thickness of our bones, our blood circulation, etc.

The point is that the International Space Station, which happily work for another 10 years, leaving the transportation logistics side, is a laboratory that has its good things. is not the perfect laboratory: it moves and vibrates, is noisy, hot. But our lab space.

Tuesday, October 26, 2010

How To Adjust Temperture On Radiators

Science in comics

This is very funny:


A web site called Pixton Comics , where you yourself can create their own comic strips, free. PC Magazine placed it among their 100 best websites of 2010. The software is very easy to follow. Then I saw that my friend Veronique Koch has been dedicated to creating your science comics. She is a marine biologist and primary school teacher, and his cartoon called "Slickscience" . Not bad! She is using these stories in their primary classes in Miami. Veronique Congratulations!

Thursday, October 21, 2010

Rash On Inner Thighs And Belly

Camera Curious Curious Martian

Cool. Literally cool: My friend Adriana Ocampo Uria, who works as scientific director of interplanetary missions the NASA headquarters in Washington has just sent me this link . is a live camera work in the clean room the Jet Propulsion Laboratory in Pasadena , which is assembling the next robot on Mars, the Mars Science Laboratory, dubbed beautifully Curiosity.

I've been in these cellars hyper clean, where you have to use slippery polyester suits to avoid them sticking a speck of dust, and go through a shower of air to enter. Otherwise, it would be bad public relations move to announce that we have found something on Mars that is very earthling.