Near Earth Objects

The near-Earth object (NEO for short), whether asteroids or comets, can become a disaster for humanity if blueberries straight into our planet. This concern is growing after NASA statistics about 50 million NEO headed to Earth every day, thanks to the development of increasingly more modern. Experts predict more than 100 years, many large NEO will threaten the earth, the most famous is the "teenagers" Apophis.
Don Quijote mission.

The task of NEOShield is very detailed analysis of potential projects can be applied in case a threatening NEO earth. First, Don Quijote mission, which deployed two spacecraft at the same time, a ship (called Hidalgo) crashed into the target asteroid, the remaining ships (name Sancho) flying around to collect data data to determine whether there last collision deflect asteroids or not. It is not clear what changes to the plan or not, but certainly before being implemented as intended in 2015, NEOShield to make many parameters related to Don Quijote project, such as the surface of the asteroid targets; it is composed of gas and solid according to Professor Harris.

Besides, in recent years, experts began to think of the idea that gravity affects the routes of NEO. This concept involves the use of a spacecraft edge NEO without physical contact with it, and use gravity to intervene in the NEO's orbit. This is a difficult mission, because the shapes of asteroids is not stable and continuous rotation while on the move. The bottom line is that the experts have to find a way to maintain regular contact with a non-self-propelled boat in about 10 years or more. Forcing this spacecraft gravitational effect NEO continuously to pull out the initial direction to avoid the prospect shattered when it collided with NEO.

The last measure is controversial shot straight atomic bomb and destroy the other NEO discomfort. Controversial talk to deploy nuclear weapons can harm the diplomatic relations complex on the world stage. However, some scientists believe that this is worth studying because it may be the most effective measures in case of an NEO oversized suddenly come to earth. Website Space.com quoted experts Harris explained if an asteroid with a diameter of more than 500 m and are forewarned within 5 years, measures the atomic bomb attack may be the only approach. Russian experts are currently responsible for analyzing the physical aspect of the possibility an asteroid might react to a nuclear explosion on the surface of it. Of course, Professor Harris emphasized that scientists themselves are not advocating for the tests of nuclear weapons in space and not taking advantage of this research to develop atomic weapons.

The ultimate goal of NEOShield use the knowledge gained to make the design the most effective shield to protect the earth when necessary, such as motivation measures combined with gravity. Accordingly, spacecraft observations (ie Sancho) was deployed in the Don Quijote mission will be reused as gravity spacecraft after the collision between the spacecraft and NEO suicide was successful. In addition, there is NEOShield task set a precise tool to assist in planning the global response to the involvement of partners such as the UN, the space agency in the world and the institutional concerned.

US racist or not?

America is the country attaches great importance to talent. Examples of Bruce Lee, Jackie Chan, singer CoCo Lee, or rugby players Vietnamese Americans Dat Nguyen ... the list on US soil is little salt in the tank between the world more than 100 million people. Sender: honganh Send to: Board World Title: Some thoughts! No one would deny the talent and dedication of the employees of these people. Where talent is cherished, respected regardless of who he is Asia, Europe or Africa. The old engine we have a saying: "now is the nation's natural gas."

 Americans have the preponderance of scientific technology and capital, they understand better than anyone else this attraction, with "pragmatism use "they are doing their best to maximize this utility. how? that America has been and will continue in various ways to attract talent from all over the world to the domain this promised land. anyone arriving America for a reason that is bringing hope to find their dream here. There is a problem is, not all immigrants to the US are talented and is genius. They came to America with many different reasons: refugees, migrants and their families, the study then seeks to stay, or the scientist can not afford to develop their talents at home him ... "9 10 reviews" a thousand people with a thousand different reasons. Take for example: an ordinary people from a certain country in Africa or Asia (for one reason or objective or subjective to live in the US) have health, labor skill level with the US nationals, whether Americans can accept immediately hired him and paid him with a salary equal to the American people? If there are fewer cases. Because whether they agree hire him, but he will only pay for lower wages than they would pay wages for the American people or they will exploit the labor of his more sophisticated than what they paid for him. He will take more time, more effort to assert themselves in a strange country like America. Even the final results may not be always achieved. United States of any country is multi-ethnic culture, multiculturalism. But lurking behind the curtain multicultural still exist discrimination, racism. It can be overt or concealed a subtle and discreet, but not at immigrants living in the United States to understand how it !?