In order to know the meaning of the term asteroid, the first thing is to know its etymological origin. In this case we have to establish that it is the result of the sum of several components of the Greek language:
-The noun “aster”, which is equivalent to “star”.
-The root “eidos”, which can be translated as “form” or “appearance”.
In the same way, we can indicate that the “creation” of the term asteroid is attributed to the English astronomer William Herschel (1738 – 1822). This scientist created it to be able to refer to celestial bodies that had the peculiarity of resembling a star, but that were not in reality.
It is a word that is used with reference to what has star shape, shape or appearance. In the field of astronomy, an asteroid is called a small body what is part of the solar system.
Recall that the solar system is a system of planets whose organization revolves around the star called Sun. Asteroids, in this frame, are rocky objects that orbit around the mentioned star, generally between the orbits of Jupiter and Mars.
The diameter of the asteroids does not exceed 1,000 kilometers: therefore have a smaller dimension than the planets. Instead, they are larger than meteoroids, other astronomical bodies in the solar system.
As a result of changes in the different concepts of astronomy, the classification of asteroids was also modified. The first asteroid to be discovered used to be considered to be Ceres, detected by Giuseppe Piazzi on 1801. However, in 2006, Ceres it happened to be considered like a dwarf planet. Is novelty transformed to Pallas, found in 1802, as the first asteroid to have been discovered.
Already in the XXI century, astronomy has recognized hundreds of thousands of asteroids. The collision of bodies greater than, due to the influence exerted by the force of gravity from Jupiter, could not be constituted as planets, it is the origin of these stars that have a size between ten meters and almost 1,000 kilometers diameter.
Asteroids have greatly inspired the world of cinema. A good example of this are several films that take one as a starting point or that develop around it. Examples are these:
-“Asteroid”. It is a feature film released in 1997, which is directed by Bradford May and which revolves around the arrival of an asteroid on Earth.
-“Asteroid. Final impact ”. In 2015 it was, for its part, when this other action film, directed by Jason Bourque and starring Anna van Hooft and Mark Lutz, hit the movie billboards. It tells how a scientist manages to discover that a huge, invisible-type meteorite is dangerously approaching the Earth, thus putting humanity in serious danger.
To these films we could add others such as “Deep Impact” (1998), “Armaggedon” (1998) or “2012”.