Atlantis Online
October 18, 2019, 07:28:27 pm
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Scientists to drill beneath oceans
http://atlantisonline.smfforfree2.com/index.php/topic,8063.0.html
 
  Home Help Arcade Gallery Links Staff List Calendar Login Register  

SCIENTISTS DISCOVER AN EARTH-SIZED PLANET - UPDATES

Pages: [1]   Go Down
  Print  
Author Topic: SCIENTISTS DISCOVER AN EARTH-SIZED PLANET - UPDATES  (Read 284 times)
Bianca
Superhero Member
******
Posts: 41646



« on: April 21, 2009, 05:04:19 pm »









Near Neighbor



Gliese 581, a red dwarf star in the constellation Libra, lies around 20.5 light-years from Earth.

"In astronomical terms it is one of our near neighbors, the 87th closest known star system to the sun," said Carole Haswell, an astronomer at the Open University in Milton Keynes, U.K.

Since planets orbiting Gliese 581 are too far away to be seen directly, Mayor and colleagues originally spotted Gliese 581d by searching for tiny wobbles in the host star's motion using the European Southern Observatory (ESO) telescope at La Silla in Chile.

Weighing in at around seven Earth masses, Gliese 581d is unlikely to be made of rocks alone, the team believes.

"We can only speculate at this stage, but it may have a rocky core, encased in an icy layer, with a liquid ocean at the surface and an atmosphere," Mayor said.

Meanwhile, the much smaller and lighter Gliese 581e "probably doesn't look too different to Earth, except that it will be very hot, because it is so close to its host star," said Andrew Norton, an astronomer also at the Open University.

Norton's colleague Haswell added: "It is very exciting that such a promising candidate for an Earthlike planet has been found so close to us. It means there are likely to be many more when we search further."

And the more Earthlike planets there are, the greater the chance of discovering one that harbors life.

"I think it is only a matter of time," Norton said. "If life really does exist elsewhere in the universe, then within the next 10 to 15 years I expect we may see the first signs of life, via spectroscopic signals from exoplanets."
Report Spam   Logged

Your mind understands what you have been taught; your heart what is true.


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