Science

Science

Rosetta probe will wake up to encounter a comet

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The Rosetta probe from 957 days ago is in hibernation. It shall wake up on Monday, January 20th to go to meet the comet 67P/Couriumov-Guerasimenko and thus try to learn more about how the solar system was formed. The spacecraft of the European Space Agency (ESA), broke during March 2, 2004 and in this long history has had three approaches to Earth and Mars. It has also flown and taken pictures of two asteroids. Steins on the 5th of September 2008 and Lutetia on the 10th of July 2010. Hibernation is scheduled in June 2011 and then travel up to about 800 million miles from the sun near the orbit of Jupiter which will be released in three days.

When Monday comes, it will come out of that state and will start a path to the final encounter with this heavenly body, in November this year. There it will rest on the Philae surface module of 100 pounds. During this stage, the probe will bring high-resolution images and analyze the composition and structure of both the surface and the deeper layers of the comet, thanks to the 21 instruments that it accounts. Mark McCaughrean, one of the leaders of space exploration in the ESA says that comets are witness capsules of the birth of the solar system. “Opening these capsules viewing the gases, dust and all the ice that is inside will help us obtain formidable clues about the origin of our solar system and perhaps also life, because comets contain organic molecules” he told AFP.

Rosetta Probe
Rosetta Probe

The comet was selected because it has lived billions of years in deep space until a passage near Jupiter radically altered its orbit in 1959. This comet has hardly been eroded by the sun’s rays and testimony about the universe promises to be particularly understandable.

4 scenarios about the destruction of Earth

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There are a few science fiction films which have spawned the film industry, about the destruction of Earth. Formerly responsible were dangerous enemy aliens, fantastic creatures, sometimes meteorites and asteroids and other are pandemics and deadly viruses. While all of these scenarios are based on the inexhaustible imagination of some talented screenwriters and directors, there are some scientists who express there real concerns for the future of our planet.

Global Warming

Climate change is the greatest threat which confronts the planet, as many scientists agree. Because of this extreme weather conditions seen in many parts of the world may become even more extreme, such as more drought in some areas, floods, rising sea levels, etc.

global warming
global warming

Nuclear war

Many scientists still fear that the end of the earth will come from a nuclear war, if nuclear weapons that many countries own, fall into the wrong hands.

nuclear explosion
nuclear explosionasteroid

Asteroid

There are some scientists who fear that what has been done in Hollywood scenarios can actually happen in reality. An asteroid wiping out the entire Earth. Besides, as some experts suggest, dinosaurs became extinct when an asteroid collided with Earth. In 1908 in the Tunguska region of Siberia a meteor destroyed an area of ​​approximately 2,000 square kilometers.

asteroid
asteroid

Pandemic threat

New pathogens are appearing every year. Recently we had the cases of SARS, severe acute respiratory syndrome, avian influenza and coronavirus MERS in Saudi Arabia. A deadly disease could be transmitted as lightning in our interconnected world. The threat of a global pandemic is very real, as argued in their book Biology, writers Joseph Miller and Ken Miller.

By Nicole P.

NSA is working on quantum computer that can decrypt any password

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The National Security Agency (NSA) is working on the construction of a quantum computer that can decrypt any password of even higher security, revealed exclusively today by The Washington Post from documents of the CIA and Edward Snowden. The development of quantum computing is a goal pursued for years by the scientific community and the NSA, the European Union and Switzerland have made ​​significant progress in the last decade. A quantum computer is much faster than a common one so it can decipher all forms of coding even of higher security is used to protect state secrets, financial transactions and medical and business information.

According to documents provided by Snowden, the work of the NSA to build a quantum computer is part of a research program of $ 79.7 million under the title “penetrating hard targets”. Experts believe that the NSA is not close to achieving the ambitious goal of quantum computing scientific community. A decade ago, some experts claimed that the quantum computer could come in the next ten or a hundred years, whereas five years ago it felt that to achieve this goal there were still at least ten years necessary. The difference between quantum and classical computing is that while the latter uses the binary system of ones and zeros, the first uses the “quantum bits” that are simultaneously zeros and ones.

Quantum Processing System
Quantum Processing System

A classical computer, even if it’s quick, must make a calculation every time while a quantum one can avoid doing calculations as they are unnecessary to solve a problem, which is able to find the answer faster. Quantum computers are extremely delicate so if you do not adequately protect them, the system may fail.

The Big Bang Theory attracts scientists and trekkies

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One of the fixations of The Big Bang Theory‘s is Star Trek, the legendary television series that Sheldon, Leonard, Raj and Howard are absolute devotees of. The writers of the show pay constant homage to Star Trek, some of whose protagonists have appeared as guests at different times. George Takei, Sulu Mister – out in an episode of the fourth season with Katee Sackhoff and the actress who plays Captain Kara Starbuck Thrace in another sci-fi series, Battlestar Galactica. Leonard Nimoy, the actor who plays Mr. Spock made ​​his cameo in the second season. Meanwhile, Brent Spiner and LeVar – Burton – Data – Geordi – interpreters of Star Trek: The Next Generation, have also come to The Big Bang Theory. Finally, William Shatner, the venerable Captain Kirk, who is now 82, said he would love to appear as special guest of nerds to the California Institute of Technology.

Big bang theory trekkies
Big bang theory trekkies

This enthusiasm has not always been so unanimous. Before the series premiered in 2007, many scientists trembled at the stereotypical flamboyant image they expected to see reflected in the scripts. And yes, physicists can be TV geeks and misfits for social relationships, addicted to video games and Star Trek. But thanks to the humor that distills them, the scripts stand out well, fall friendly and seem human. Today, most scientists have changed their minds about the series and some have gone as special guests. For example one of them is Stephen Hawking.

Big Bang Theory nd Stephen Hawking
Big Bang Theory nd Stephen Hawking