Welcome to Astronomy & Telescope Astronomy

 
 

  Modules

· Home
· AvantGo
· Content
· Downloads
· Encyclopedia
· FAQ
· Feedback
· Forums
· Journal
· Members List
· Private Messages
· Recommend Us
· Reviews
· Search
· Statistics
· Stories Archive
· Submit News
· Surveys
· Top 10
· Topics
· Web Links
· Your Account
 

  Who's Online

There are currently, 14 guest(s) and 0 member(s) that are online.

You are Anonymous user. You can register for free by clicking here
 

  Search



 

  Languages

Select Interface Language:

 

  Random Headlines


Computer Control
[ Computer Control ]

 

 
  Comet and Asteroid: Astronomy: Comet and Asteroid - SEARCHING FOR THE NEXT ONE
Posted on Wednesday, December 01 @ 15:25:50 CST by astronomy
 
 
  Comet and Asteroid

SEARCHING FOR THE NEXT ONE

We do not know when Earth will be hit again. Statistically, a 6 mile (10 km) diameter comet—large enough to cause a mass extinction—should strike once every 100 million years. Smaller 1/2 mile (1 km) diameter objects could strike every 100,000 years, and would certainly still be devastating.



Astronomers are hoping to get funding to systematically survey the sky for impact hazards, plotting the orbit of every asteroid or comet that could inflict global damage. The numbers are daunting—there are millions of objects to be discovered and sifted through to identify the 2,000 or so most dangerous ones.

Next time a cornet "stalks the sky," we should enjoy its beauty and mystery. And as we gaze, we should be mindful of the awesome potential for disaster should such an object strike the Earth. But also remember: were it not for such an impact, 65 million years ago, we quite possibly would not be here today.

 
 
  Login

Nickname

Password

Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.
 

  Related Links

· More about Comet and Asteroid
· News by astronomy


Most read story about Comet and Asteroid:
Astronomy: Comet and Asteroid - THE RISK OF IMPACT

 

  Article Rating

Average Score: 0
Votes: 0

Please take a second and vote for this article:

Excellent
Very Good
Good
Regular
Bad

 

  Options


 Printer Friendly Printer Friendly

 Send to a Friend Send to a Friend

 

 
 
Associated Topics

Comet and Asteroid
 
 


 
 
"Login" | Login/Create an Account | 0 comments
The comments are owned by the poster. We aren't responsible for their content.
 
 


 
 
No Comments Allowed for Anonymous, please register
 
 


 
  Astronomy & Telescope Astronomy

All logos and trademarks in this site are property of their respective owner. The comments are property of their posters, all the rest © 2004 by Astronomy & Telescope Astronomy
You can syndicate our news using the file backend.php or ultramode.txt