INTRODUCTION

Are you a person that has always been fascinated by space? Have you ever wondered about the mysteries it could hide? Space has always excited me. A whole vacuum filled area with things we could only dream of fully understanding. In this article I will write about one of my favourite topics. Comets. When I was around seven years old, my parents and I were sitting on a rooftop in my grandfather’s house and saw a tiny streak of light go past the dark sky. I was amazed, and when my older brother told me it was a comet. They have enthralled me ever since. Enjoy reading.

Shooting stars, scientifically known as Comets are frozen leftovers of rock in space composed of pieces of ice, rocks and dust. When they move fast, they heat up, scattering pieces of ice and dust and as they move at such a speed that their light can be seen as a tail behind the rocks. The tail’s length and colour depends upon the type of rock. These scattered rocks may be as large as towns and cities, some comets may be even larger! Sometimes when a star explodes it turns into a comet or comets and crashes if it is exposed to a gravitational field. These often orbit the sun.

space
TFD - Terms, Facts,and Definitions

Orbit: The path in which the comet moves. The orbit around the comet defines how the comet moves and also its lifespan or period. Every different comet has a different orbit, and every orbit has a different lifespan. Many orbits last upto millions of years

Orbital period: The time the comet takes to cover one orbit around the sun (or any celestial body it is encircling)

Periodic Orbits: orbits with a period of less than 200 years.

Parabolic orbit: An orbit whose overall shape is like a parabola; the orbit represents the least eccentricity for escape from an attracting body

Comet period: Defines how long a comet can last

Periodic comet: Comets with a period of less than 200 years

Non-periodic comets: Comets with no significant orbit

Long periodic comets: Comets with periods between 200 to 1000 years

Near-parabolic comets: Comets with periods over 1000 years

Shooting stars Comet
Keep in mind,
  • A comet with a circular orbit has an eccentricity of ‘0’
  • Eccentricity of an orbit or a comet also determines if the comet will return or not. The eccentricity is calculated. If a comet or an orbit of a comet has an eccentricity of exactly ‘1’ it means that the comet will never return again
  • Most orbits were named due to their shape, for example, hyperbolic comets with shape of a hyperbola etc
  • Sometimes, comets are referred to “Dirty snowballs” and “Cosmic snowballs”
  • There are currently 3000 known comets
  • A great comet is a comet which can be seen without the need of a telescope
  • The word “Comet'' comes from the Greek word “Kometes” meaning long hair. This is because of how a comet's tail can look like long flowing locks of hair
  • Usually most comets are named after their discoverers
Comet
Discovery of Comets

Are you a person that has always been fascinated by space? Have you ever wondered about the mysteries it could hide? Space has always excited me. A whole vacuum filled area with things we could only dream of fully understanding. In this article I will write about one of my favourite topics. Comets. When I was around seven years old, my parents and I were sitting on a rooftop in my grandfather’s house and saw a tiny streak of light go past the dark sky. I was amazed, and when my older brother told me it was a comet. They have enthralled me ever since. Enjoy reading.

Shooting stars, scientifically known as Comets are frozen leftovers of rock in space composed of pieces of ice, rocks and dust. When they move fast, they heat up, scattering pieces of ice and dust and as they move at such a speed that their light can be seen as a tail behind the rocks. The tail’s length and colour depends upon the type of rock. These scattered rocks may be as large as towns and cities, some comets may be even larger! Sometimes when a star explodes it turns into a comet or comets and crashes if it is exposed to a gravitational field. These often orbit the sun.

Comet Halley

    Comet Halley 1758 -most famous comet

FAMOUS COMETS
Comet Hale-bopp

    Comet Hale-bopp

    Discoverer: Alan Hale, Thomas bopp

    Orbital period: 2,533 Years

Comet shoemaker

    Comet shoemaker levy 9 This comet broke apart in 1992 and collide with jupiter in 1994

    Discoverer: Eugen merle shoemaker, Carolyn S. shoemaker, Davis H. levy

    Orbital period: 18 Years

Encke’s comet

    Encke’s comet 1786 appeared in a meteor shower

    Discoverer: Johan franze Encke, Pierre Mechain, Carl Ludwig Christian Rumker

    Orbital period: 1204 days

Comet Hyakutake 1996

    Comet Hyakutake 1996

    Discoverer: Yuji Hayakutake

    Orbital period: 113,782