Atlantis Online
November 27, 2022, 05:36:43 am
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Giant crater may lie under Antarctic ice
http://space.newscientist.com/article/dn9268
 
  Home Help Arcade Gallery Links Staff List Calendar Login Register  

US Science Conference Hears Galaxy Has 'Billions Of Earths'

Pages: [1]   Go Down
  Print  
Author Topic: US Science Conference Hears Galaxy Has 'Billions Of Earths'  (Read 37 times)
Kristina
Superhero Member
******
Posts: 4558



« on: February 16, 2009, 11:18:14 am »

US Science Conference Hears Galaxy Has 'Billions Of Earths'



There could be one hundred billion Earth-like planets in our galaxy, a US conference has heard.

Dr Alan Boss of the Carnegie Institution of Science said many of these worlds could be inhabited by simple lifeforms.

He was speaking at the annual meeting of the American Association for the Advancement of Science in Chicago.

So far, telescopes have been able to detect just over 300 planets outside our Solar System.

Very few of these would be capable of supporting life, however. Most are gas giants like our Jupiter, and many orbit so close to their parent stars that any microbes would have to survive roasting temperatures.

But, based on the limited numbers of planets found so far, Dr Boss has estimated that each Sun-like star has on average one "Earth-like" planet.

This simple calculation means there would be huge numbers capable of supporting life.

"Not only are they probably habitable but they probably are also going to be inhabited," Dr Boss told BBC News. "But I think that most likely the nearby 'Earths' are going to be inhabited with things which are perhaps more common to what Earth was like three or four billion years ago." That means bacterial lifeforms.

Dr Boss estimates that Nasa's Kepler mission, due for launch in March, should begin finding some of these Earth-like planets within the next few years.

Recent work at Edinburgh University tried to quantify how many intelligent civilisations might be out there. The research suggested there could be thousands of them.

http://news.bbc.co.uk/2/hi/science/nature/7891132.stm

Report Spam   Logged

"Nothing gives one person so much advantage over another as to remain always cool and unruffled under all circumstances."

Thomas Jefferson

Share on Facebook Share on Twitter



Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by EzPortal
Bookmark this site! | Upgrade This Forum
SMF For Free - Create your own Forum
Powered by SMF | SMF © 2016, Simple Machines
Privacy Policy