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April 18, 2012

Astronomers discovered the asteroid 2012 HM who comes to Earth in April

The recently discovered asteroid 2012 HM neighbor happen to the Earth 1.5 times the distance of the Moon on April 28, reports the Program report Near Earth Objects (NEO) of NASA.

The object will pass 576 000 km from Earth at a sufficient distance that could eventually be affected by the gravity of the Earth or Moon.Its closest approach to the moon will be 375,000 miles the morning of April 28 after an hour and will approach the Earth to move away quickly.

The asteroid 2012 HM is about 50 to 100 meters and traveling at a speed of 6.44 km / s.The NEO studied by space objects, comets and asteroids are driven by the gravitational pull of planets in close orbits that allow them to enter the vicinity of Earth.

They are composed mainly of water ice with embedded dust particles.While comets are formed in the cold outer planetary system, most of the rocky asteroids have formed in a zone warmer inner solar system between the orbits of Mars and Jupiter.

The scientific interest in comets and asteroids is that they are a remnant material that has not undergone major changes in the process of formation of the solar system some 4.6 billion years.

One hypothesis is that the giant outer planets comoJúpiter, Saturn, Uranus and Neptune formed from an agglomeration of billions of comets and the remnants of this formation process are the comets we see today.
From this perspective posed by NEOs, asteroids today are the pieces left over from the initial agglomeration of the inner planets, including Mercury, Venus, Earth and Mars.

"Comets and asteroids offer clues to the chemical mixture from which the planets formed some 4.6 billion years. If we know the composition of the primordial mixture from which the planets were formed, then we must determine the chemical components of the remaining remnants of this formation process, comets and asteroids, "says NASA.


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