October 6 last year, astronomers found a 4 meters long and weighing about 83 tons of asteroid 2008 TC3, the calculation results show that, 2008TC3 chance of colliding with Earth as much as 100%. At this time, arrived at the asteroid from the Earth's atmosphere is only 19 hours before. However, in the asteroid entered the atmosphere after the combustion exhausted, residues falling in the Nubian Desert in northern Sudan, about 30 kilometers outside, the scattered wreckage of a number of asteroids and weighing about 3.95 kilograms.
This is the first time scientists are tracking the course of asteroids colliding with Earth. Scientists believe that in 1908 and swept the Tunguska forest in Siberia large asteroid celestial bodies in general, may be every 200 years the Earth will be hit first. Once the asteroid entered Earth's atmosphere, colliding with Earth after the explosion or disintegration occurs. Such as an asteroid exploded in a city or directly over the collision will lead to a devastating disaster.
Astronomers pointed out that although the number of science fiction movies of asteroids colliding with Earth would, in fact, the possibility of asteroids colliding with Earth exist. For the existence of threatening to destroy the asteroid is very necessary, but such a threatening asteroid, or even more complex than the movie.
Best to avoid such a disaster is to change the asteroid crashed into Earth orbit.
Space Shuttle Discovery's safe return to Earth
● The United States space shuttle Discovery, landed safely on the 28th the Kennedy Space Center in Florida, the successful completion of the delivery to the International Space Station components and solar panels bracket task.
Discovery Time in the Central Plains at 3:14 on the 29th to land because of bad weather than the scheduled time for more than an hour late.
Discovery's trip is the first space shuttle flight this year. Time of the next space shuttle flight is tentatively scheduled to present on May 12.
Obama video greetings from the International Space Station astronauts connection
● Barack Obama President of the United States, on the 24th and the International Space Station astronauts on the 10 video connections, greeting each other with questions. In the call, the International Space Station Commander Mike? Fink told Obama, a space station orbit the earth every 90 minutes around every 24 hours to see the sunrise 16.
Sandra female astronauts? Magnus, in November last year, started work at the space station, Barack Obama in the video signal, to see her because of weight loss and long hair in the air being released into the atmosphere. Obama asked: "long hair in the space station trouble? Want to cut point? Popular short hair." Magnus replied: "honestly, I cut hair look good, so long insisted on staying . "
This is the first time since Barack Obama became president talk with astronauts. Obama connection with the day with the astronauts, as well as primary and secondary school students from Washington, their own question: "What astronauts eat?" "Can play in space electric?" "There are few stars in space?" "What in order to become an astronaut? "... ... the International Space Station astronauts original Permanent 3.
On the 15th of this month, seven space shuttle Discovery astronauts traveling from the United States John F. Kennedy Space Center, Florida, launched into the international space station on the 17th. Discovery is scheduled to leave on the 25th International Space Station, on the 27th to return to the Kennedy Space Center.
Microsoft plans to cooperate with NASA to create a virtual telescope
● Microsoft announced the establishment of and cooperation between NASA, Microsoft World Telescope (WorldWide Telescope) project, will be NASA's Mars Exploration United States and other celestial bodies of a large number of photos. Coming through the system, the public will be able to access from worldwidetelescope.org Mars, the Moon and Other Celestial Bodies, the universe of high-definition images and scientific information.
NASA officials said, which is in line with the new NASA Administrative open and transparent policy. NASA provided to the Microsoft for more than 100 TB of data, including the August 2005 launch of the Mars Exploration Orbiter (MRO), lunar exploration Orbiter (LRO), such as photographs. It will help stimulate the general enthusiasm for astronomical exploration.
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