Go Back   IceInSpace > General Astronomy > Astronomy and Amateur Science

Reply
 
Thread Tools Rate Thread
  #1  
Old 16-11-2017, 08:42 AM
gary
Registered User

gary is offline
 
Join Date: Apr 2005
Location: Mt. Kuring-Gai
Posts: 5,914
Post Earth-sized exoplanet orbiting Ross 128 only 11 light years away

In a story today in the Sydney Morning Herald, reprinted from the Washington Post, Sarah Kaplan writes on the
discovery of Earth-size exoplanet orbiting the star Ross 128, a dim red dwarf just 11 light years away.

Quote:
Originally Posted by Sarah Kaplan, Washington Post
The newfound world, dubbed Ross 128 b, is the closest temperate planet known to orbit a "quiet star" - one that isn't prone to devastating and potentially life-obliterating bursts of radiation.

And it appears to meet some of the basic requirements for habitability. The planet is slightly more massive than Earth, so it is probably a rocky world with a solid surface. The host star is much cooler and fainter than our sun, but Ross 128 b orbits it closely and quickly - a year lasts just 9.9 days. The planet receives about 38 percent more radiation than Earth does - enough to give it an equilibrium temperature between -60 degrees and 20 degrees Celcius, assuming it has an Earthlike atmosphere (and that's a huge assumption).

Though the study authors call Ross 128 b a "temperate planet", it's not clear whether it falls within the habitable zone - the Goldilocks region where a planet is just warm enough for liquid water to exist on its surface.
Full story here :-
http://www.smh.com.au/technology/sci...15-gzmah7.html
Reply With Quote
  #2  
Old 16-11-2017, 08:50 AM
gary
Registered User

gary is offline
 
Join Date: Apr 2005
Location: Mt. Kuring-Gai
Posts: 5,914
ESO Press Release :- http://www.eso.org/public/news/eso1736/?lang
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 06:20 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement
Testar
Advertisement