Incredible-Adventures

Comets

You are here:
Home Page
 > Space Exploration
 > Comets
 

Search Engines

Custom Search

The Solar System

Sun
Mercury

Venus

Earth
Moon
Mars

NEO's

Asteroid Belt

Jupiter

Saturn
Uranus

Neptune

Pluto

Sections
Aircraft
Business
Exploration
Future
History
Launch Vehicles
Links
Military
Miscellaneous
Propulsion
Quiz
Shop
Spacecraft
Spaceplanes
Stations
World

Options

Contact Info

Newsletter
Update News

Space Comets are wandering bodies of ice, rock and organic compounds that can be several miles in diameter. Comets are celestial bodies in elliptical or parabolic orbits around the Sun. 

What is a Space Comet?

Comets are small, irregularly shaped bodies composed of a mixture of rock, organic molecules and frozen gases. When in the proximity of the Sun, they are usually characterised by a long tail which is composed of material vaporised off the comet body. Some originate from the Edgeworth-Kuiper Belt, beyond Neptune, and some from the Oort cloud, a spherical shell comprised of millions of bodies at the edge of our solar system.

The orbit of a Comet usually takes them to the cold and dark outermost reaches of the solar system. When comets venture into the more intense sunlight of the inner solar system, the ices on the comet nucleus begin to melt and fall away. The wake of particles forms the comet's tail, which can be hundreds of miles long and can often be seen from Earth.

Space Comet are thought to have created major changes to Earth's early atmosphere and climate by striking Earth billions of years ago. They may have delivered the first carbon-based molecules to our planet.

Halley's Comet

Halley's Comet is named after Edmund Halley (1656-1742). Halley was the first person to predict the return of a comet to the inner solar system in a regular orbit. Halley's Comet orbits the Sun every 76 years. The most recent appearance was in 1986. Halley's Comet will be next visible from Earth in 2061.

Halley's comet orbital period is on average 76 years, however its orbital path can vary due to to gravitational fields of the major planets. In the last 2000 years, it has varied by as much as four years.

Famous Comets:

Other famous Space Comets are: Comet Neat, Comet Machholz (official designation C/2004 Q2), Hale-Bopp has an orbital period of 4026 years.

The visit of the Hale-Bopp comet in 1997 gave one of the brightest views of a comet since 1811, visible even from brightly lit cities.

Long Period Comets

Long Period Comets (Non-periodic comets) are comets that do not have confirmed observations at more than one perihelion passage and generally have orbital periods of 200 years or more.

Comet Hale-Bopp - discovered July 23, 1995

Books:

Comet by Carl Sagan, Ann Druyan (Contributor)
From Amazon.com, Amazon.co.uk

Impact!: The Threat of Comets and Asteroids
by Gerrit L. Verschuur
From Amazon.com, Amazon.co.uk

Shoemaker by Levy by David H. Levy
From Amazon.com, Amazon.co.uk


Space Comet Links:

References:


Any comments or suggestions, then click on Contact Info.

Aerospaceguide Update News and more. 

  • Keep in touch by joining the Free Emailed Newsletter by simply adding your email below.

Subscribe to aerospaceguide
Powered by groups.yahoo.com

Thank you for visiting Space Projects and Info.

Buy @ ASG:
Support Us!

ASG Space Shop

Books
Clothes
Collectibles

Magazines

Models
Posters
Software
Star Trek
Toys
Video

Other Cool Stuff!



Astronaut Costumes

Free Shipping!


20 million dollar space tourist

 

 

 

 

 

 

 

Goto Space Exploration

Goto Space Projects and Info Home Page

Copyright 2000-2014 Vic Stathopoulos. All rights reserved.
Updated: Tuesday 1st, April, 2014

Flight suits by Countdown Creations