What Is a Asteroid | Top 10 Biggest Asteroid
What is a Asteroid
Asteroids are small sized planets found in the interior of our solar system. They are found orbiting the Sun. Their size is much smaller than normal planets and they do not properly justify the definition of planets, due to which they were named asteroids. There are several million asteroids in the Solar System. Their size is up to several miles or even a few feet.
Even though asteroids are so small in size, they can still prove to be very dangerous. Since the past, many asteroids have collided with our earth, due to which many unpleasant incidents have occurred. There is a possibility that in future also many small and big asteroids will continue to collide with the Earth.
Due to their orbital path and physical characteristics, they remain the subject of discussion among scientists.
Origin and Structure
Since 1 January 1801, when Italian astronomer Giuseppe Piazzi discovered what would later be classified as an asteroid from the Palermo Astronomical Observatory, scholars have been trying to identify the origin of the individual “planets” and families of “corpuscles”.
Taking asteroids formed in the Solar System as a reference, those closer to planets such as Earth and Mars show a spectrum of rock minerals mixed with iron, while those closer to Jupiter tend to be darker and redder. indicate a structure that is not much different from it. of primitive nebulae, which would have condensed about 4.5 billion years ago to form planets.
So in the first phase small solid bodies were made of planetary bricks, but in the region beyond Mars, due to the effect of gravitational resonance with the mass of Jupiter, bodies greater than 1000 km in diameter were formed.
When our solar system was being formed 5 billion years ago, the few particles that survived from it were called asteroids. Jupiter is the largest planet.
When it was forming, due to its large size, some particles could not become planets and today millions of pieces of it are revolving between Mars and Jupiter.
The particles that failed to be incorporated within the planet-forming planets became asteroids, and most of them reached temperatures high enough to allow chemical differentiation; The result was a build-up of water in some of them, others in volcanic events.
Thanks to Jupiter’s interference on the primary orbits of the asteroids, their collisions gradually increased. This caused many destruction in which large bodies survived. Other particles were launched out of the solar system.
So some asteroids, and even meteorites, represent the remains of these protoplanets, while others, such as comets, (Top 10 Biggest Asteroid) are even more primitive bodies, which have not managed to differentiate and are therefore evidence of a very distant past. , which are close to the origin.
With regard to composition, scholars have put forward the hypothesis that with the typical solid and rocky composition, asteroids larger than a kilometer are not monolithic, but rather small fragments or piles of fragmented boulders on the lines of comets, according to Don Davis and Clarke. are in the form. Chapman proposed first.
Top 10 Biggest Asteroid
- 1 Ceres
- 4 Vesta
- 2 Pallas
- 10 Hygiea
- 704 Interamnia
- 52 Europa
- 511 Davida
- 87 Sylvia
- 31 Euphrosyne
- 624 Hektor
Much interest has developed around asteroids whose orbit intersects Earth’s orbit and which may collide with it for centuries. Almost all near-Earth asteroids are classified as Amor asteroids, Apollo asteroids or Aten asteroids according to the major semi-axis of their orbit and the distance from the Sun to their perihelion.
Several methods have been proposed to modify their orbit in the event that the risk of a collision is confirmed, although a lack of knowledge of the internal structure of these objects prevents us from predicting in detail how they will respond to an impact or explosion. will respond. around them. for the purpose of removing or destroying them.
Even models that try to predict the consequences of a catastrophic collision with Earth are still of questionable validity due to the impossibility of being subjected to an experimental test.
[What Is a Asteroid | Top 10 Biggest Asteroid]