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JEE Main 2026 Preparation: Question Papers, Solutions, Mock Tests & Strategy Unacademy » JEE Study Material » Physics » ASTEROID AND METEOROID

ASTEROID AND METEOROID

In this article we will learn about asteroid and meteoroid, their types, what is asteroid and meteoroid made of. Classifications and differences between them.

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Meteors, asteroids, and meteorites… It’s probably fair to say that these boulders from space fill us with both awe and anxiety. However, learning a little more about each of them and how they differ can help to alleviate some of your concerns. While all of these rocks come from space, their names vary depending on their location—that is, whether they are racing from space or through the atmosphere and colliding with the Earth’s surface.

Asteroids are mostly found between Mars and Jupiter in the asteroid belt. Asteroids’ orbits are occasionally disrupted or altered, some get closer to the Sun, and therefore closer to Earth. However, scientists have recently discussed the possibility of enormous numbers of asteroids in the Kuiper Belt and Oort Cloud, in addition to the asteroid belt.

Asteroids are stony bodies that do not have an atmosphere and are sometimes referred to as small planets or planetoids.

WHAT ARE THEY COMPOSED OF

They are most likely made up of clay and silicate rocks and have a black look.

They are made up of mainly silicates and heavy metals.

According to NASA, a small percentage of the asteroid population could be burnt-out comets whose ices have melted and been thrown into space. Recently, scientists identified asteroids that resemble comets in that they emit gas and dust, and, as previously said, there appears to be a significant number of entities with asteroid-like compositions but comet-like trajectories.

Meteorite

A meteorite is a piece of a meteoroid that survives the fall through the atmosphere and settles on Earth. Meteorites can range in size from a fraction of a gramme (the size of a pebble) to 100 kilograms (220 lbs) or more (the size of a huge, life-destroying boulder). Micrometeorites are meteorites with a diameter of less than 2mm.Meteorites have historically been classified into three groups based on their structure, chemical and isotopic composition, and mineralogy. Iron meteorites are generally formed of metallic iron-nickel.

Asteroid and comet impact events, which are commonly thought of as destructive forces, can also have a beneficial effect on processes ranging from the molecular to the evolutionary scale. Impacts may have transported and prompted the synthesis of prebiotic ingredients that eventually led to life on the highly pummelling early Earth. At the evolutionary level, impacts may have aided the emergence of new groupings, such as dinosaurs and mammals, by killing entire groups of organisms. We present a new viewpoint on these agents of biological change by synthesising the expanding research on the beneficial consequences of impacts… An ionisation trail is generated when a meteoroid or asteroid enters the upper atmosphere, where the air molecules are ionised by the meteor’s passage. These ionisation trails can extend for up to 45 minutes.

Meteors have been observed since antiquity, although they were not recognised as an astronomical occurrence until the early nineteenth century. Previously, they were thought to be an atmospheric occurrence, similar to lightning, and were not associated with bizarre reports of rocks falling from the sky.

DIFFERENCE BETWEEN ASTEROID, METEORITE, METEOR, AND METEORITE

A stony, occasionally metallic body smaller than a planetoid/minor planet is known as an asteroid.

A comet is a celestial body made primarily of ice and aggregate rock. They frequently travel in a very elliptical orbit around the sun. 

The suffixes are as follows:

Meteoroid – an object in space

A meteoroid’s streak of light passing through the atmosphere is called a meteor.

Meteorite – a meteorite is one that lands on the ground.

The good news is that if it’s a meteorite, you’ll be able to tell because it’s an object from space that has landed on Earth. The majority of them burn up in the atmosphere.

The bad news is that there’s no way to tell if it’s a meteorite. If you hear or see the impact and discover a hole or trench with an extremely hot rock in it, you may have discovered a meteorite. Keep in mind that the hot rock could have been struck by a meteorite that is lying somewhere else.

The majority of meteorites are stony and appear to be rocks.

However, for every known asteroid, there are many more that have yet to be discovered, and faster reaction times could be more dangerous.

Asteroids have orbits that reach Earth however they are between only Earth and Mars.

When asteroids pass close to Earth, radar, such as the equipment at NASA’s Goldstone Deep Space Communications Complex in California can identify them. 

CONCLUSION

Asteroids are smaller than planets, but larger than meteoroids, which are pebble-sized particles. They come from space and give us the opportunity to study outer space via mining of it, it opens a whole world of opportunities. The chances of getting a meteor in good shape is slim due to burning while entering into the earth’s atmosphere. Some people are also interested in extracting metals from asteroids, claiming that the asteroid belt holds enormous financial potential.

faq

Frequently Asked Questions

Get answers to the most common queries related to the JEE Examination Preparation.

Can we mine Asteroid to understand its science?

Ans :  Metal-rich asteroids could be worth trillions of doll...Read full

How can I keep track of asteroids?

Ans : Large asteroids can occasionally be seen via backyard t...Read full

What are the anatomy of asteroids?

Ans : The majority of asteroids are chondrites, which are com...Read full

Do Asteroids pose any harm to us?

Ans : They certainly can be! Dinosaurs were wiped out by an a...Read full

What are the elements that influence the quality of the work?

Ans : The work done by a force is determined by: ...Read full

Ans :  Metal-rich asteroids could be worth trillions of dollars since they contain components that are uncommon on Earth and are required in a variety of current technology. Several companies are vying for the right to mine asteroids.

 

Ans : Large asteroids can occasionally be seen via backyard telescopes. The telescope allows you to observe asteroid occultations, which occur when space rocks pass in front of distant stars, in order to track the more elusive Near-Earth Asteroids.

 

Ans : The majority of asteroids are chondrites, which are composed of clay and silicate. Some of them are “stony,” including nickel and iron. A small number of asteroids contain valuable metals.

Ans : They certainly can be! Dinosaurs were wiped out by an asteroid. Small asteroids may have even killed individuals, according to old historical reports. 2 Fortunately, civilization-threatening asteroids only strike once every few million years or so.

Ans : The work done by a force is determined by:

  1. The force’s magnitude.
  2. The displacement’s magnitude and direction
  3. The angle formed by the interaction of force and displacement.

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