An asteroid will hit on Earth on April
29, Is it true??
Astronomers said that we will be able to see an asteroid called
1998 OR2 with small telescopes during its flyby of Earth on April 29.
This 1998 OR2 asteroid is large enough to wreak havoc on Earth if it struck our
planet. When it flies on April 29 it will not come close to a collision.
The Virtual Telescope Project is a remote
observatory founded by the Astrophysicist Gianluca Massey of the Bellatrix
Astronomical Observatory in Italy. It has been monitoring the asteroid for
about a month, periodically releasing new images of space rock as it races
through the universe at over 19,000 mph (31,000 km / h).
The asteroid 1998 OR2 is currently only visible in professional
telescopes, such as Masi uses in the Virtual Telescope project. However,
amateur astronomers will have a chance to see the asteroid for themselves when
it appears in small telescopes during their close approach.
This 1998 OR2 asteroid will not come
close to a collision to Earth.
Type of asteroids?
The three broad structure or
composition classes of asteroids are C-, S-, and M-types.
1. The C-type (chondrite) asteroids are
the most common, probably consisting of clay and silicate rocks, and are black
in appearance. They are among the most ancient objects in the solar system.
2. The S-type ("stony") are
made of silicate material and nickel-iron.
3. The
M-types are metals (nickel-iron). The structural differences of asteroids are
related to how far they are from the Sun. After some experienced high
temperatures to form and partially melt, with basking of iron to force basaltic
(volcanic) lava on the center and surface.
Jupiter's massive gravity and sometimes close encounters with Mars
or any other object orbits the asteroids ejects them from the main belt and
extends them into space in all directions in other planetary orbits. Stray
asteroids and asteroids moved to Earth and other planets in the past, playing a major role in changing the geological history of Earth and the development of
life on Earth.
Scientists constantly monitor Earth-crossing asteroids, whose
paths cross Earth's orbit, and near-Earth asteroids that reach Earth's orbital
distance within about 45 million kilometers (28 million miles), and an impact,
there is danger. Can cause. Radar is a valuable tool in detecting and
monitoring potential impact hazards. The signals transmitted from objects,
images, and other information can be elicited by echoing. Scientists can know a
lot about the orbit, rotation, shape, size, and concentration of an asteroid.
Asteroid Classifications:
Main Asteroid Belt:
Most of the known asteroid's orbit within the asteroid belt between Mars and Jupiter, usually not with very long
orbits. The belt estimates that there are 1.1 and 1.9 million asteroids larger
than 1 kilometer (0.6 mi) in diameter, and millions smaller. Early in the
history of the solar system, the gravity of the newly formed Jupiter ended the
formation of planetary bodies in the region and caused smaller bodies to
collide with each other, tearing asteroids as we see fragments today.
Trojans:
These asteroids share an orbit with
a large planet, but do not collide with it because they collect two special
locations (L4 and L5 Lagrangian points) in orbit. There, the pull of gravity
from the sun and the planet is balanced by the tendency of a Trojan to
otherwise fly out of orbit. Jupiter Trojans make up the most important
population of Trojan asteroids. It is believed that they are similar to
asteroids in the asteroid belt. Mars and Neptune are Trojans, and NASA
announced the discovery of Earth Trojans in 2011.
Near-Earth Asteroids:
These objects have orbits that pass
close to the Earth. Asteroids that actually cross the Earth's orbital path are
known as Earth-crossers. As of 19 June 2013, 10,003 near-Earth asteroids are
known and the number of 1 kilometer in diameter is believed to be 861, with
1,409 classified as potentially dangerous asteroids - those that could pose a
threat to Earth.
What is NASA and
other space agencies are saying about this event?
The orbit is well
understood and it will pass harmlessly at a distance of 16 times from our moon,
"NASA wrote on Twitter." No one should worry about it.
According to EarthSky.org, the asteroid 1998 OR2 is expected to
reach a visible magnitude of 10 or 11 (magnitude is a measure of the brightness
of an object). This means that it will be visible in at least 6-inch or 8-inch
telescopes, when the weather is clear.
If you are not able to watch the flyby, you can still watch the
asteroid 1998 OR2 in a live webcast from the Virtual Telescope Project. Hosted
by Massey, the free Livestream will feature telescopic views of the asteroid
starting at 2 pm on April 28. EDT (1800 GMT).
What happens when asteroid 1998 OR2
collision on Earth on April 29.
Due to the Earth's escape velocity, the minimum
impact velocity is 11 km / s, with an average impact of about 17 km / s on
Earth. The most likely impact angle is 45 degrees. Effect conditions such as
the size and speed of the asteroid, but also the density and impact angle
determine the kinetic energy released in an event.
An asteroid impact is also a matter of
scientific fact. There are clear craters on Earth (and the Moon) that show us
the long history of large objects hitting the planet. By far the most famous
asteroid came to Earth 65 million years ago. It is believed that this asteroid
has thrown so much moisture and dust into the atmosphere that it cuts off
sunlight, reduces temperatures around the world and causes the extinction of
dinosaurs.
Any asteroid falling from the sky would have
tremendous energy. Here is a typical example. In 2028, the asteroid 1997XF11
will come extremely close to Earth but will miss the planet. If something were
to change and it hit the Earth, you would have an asteroid about a mile wide
that would hit the planet's surface at a speed of about 30,000 mph. An asteroid
that travels larger than that speed, energy is equal to about 1 million
megatons of bombs. It is very likely that such an asteroid will erase most of
life on the planet.
Conclusion:
This 1998 OR2 asteroid will not come
close to a collision to Earth. This asteroid 1998 OR2 will pass harmlessly at a
distance of 16 times from our moon. According to NASA, the orbit is well
understood so that no one should worry about it. Space agencies are said about
this event, this asteroid 1998 OR2 is expected to reach a visible magnitude of
10 or 11, this means that it will be visible in at least 6-inch or 8-inch
telescopes when the weather is clear. So do not worry about this asteroid. On
April 29 see the asteroid with a telescope and enjoy.
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