A rocky celestial body
which is revolving the sun but very much small to call a planet is known as
asteroid. There are millions of asteroid in our inner and as well as outer
solar system. Naturally they are orbiting the sun in a definite orbit, but
sometimes they are attracted to a planetary gravitational force and crush on a
plane. There are mainly three types of asteroids, type C (consists of silicate
rocks and clay), type S (consists of iron, nickel and silicate) and type M
(consists of nickel and iron). One of the biggest mass extinction on our planet
earth was happened due to the asteroid impact. It is known that all the species
of dinosaurs have gone during this incident.
In
the year 1852 an Italian astronomer Annibalee de Gasperis discovered an
asteroid name 16 psyche, the radius of this asteroid is 113 km. the scientists are
interested to this asteroid because they have found that this consists of a
huge amount of gold. According to them this asteroid is approximately $ 10
quadrillion worthy. There could be 124 mile wide gold be exists. So NASA
(National Aeronautic and Space Administration) is planning to explore this mine
physically. In the year 2026 NASA is planning to send a space craft on this
asteroid and drill it. After drilling that space craft will bring some sample
back to earth. According to the researcher if that amount of gold could bring
back to earth than the crisis of money on earth will be eliminated for several
decades. This psyche mission will launch in the year 2022 and the expedition on
this asteroid will be organized in the year 2026.
So
the asteroids can destroy an entire species and also can bring benefits for a
civilization. After the forth planet of our solar system mars there is dense
asteroid belt existing. The space agencies throughout the world are exploring
this belt and the scientists found something new every day.
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