Space: January 17, 2000


SLEEP WELL, THE DINOSAUR: It has long been assumed that there are between 1,000 and 2,000 Near Earth Asteroids large enough to cause a major global catastrophe if they hit the planet. A new study, however, has put the number at between 470 and 930, and probably near 700. Military missiles with nuclear weapons are generally thought to be the only current defense against such a threat unless it is detected years in advance. Chances for such an impact, which would probably end civilization but not mammalian life, are rated as 1% per million years. Smaller impacts that could cause regional problems and 100,000 deaths are rated at 1% per century.--Stephen V Cole


Article Archive

Space: Current 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 



Help Keep Us Soaring

We need your help! Our subscription base has slowly been dwindling. We need your help in reversing that trend. We would like to add 20 new subscribers this month.

Each month we count on your subscriptions or contributions. You can support us in the following ways:

  1. Make sure you spread the word about us. Two ways to do that are to like us on Facebook and follow us on Twitter.
  2. Subscribe to our daily newsletter. We’ll send the news to your email box, and you don’t have to come to the site unless you want to read columns or see photos.
  3. You can contribute to the health of StrategyPage. A contribution is not a donation that you can deduct at tax time, but a form of crowdfunding. We store none of your information when you contribute..
Subscribe   Contribute   Close