You are viewing our Forum Archives. To view or take place in current topics click here.
New 'Super Earth" found, may host life!
Posted:
New 'Super Earth" found, may host life!Posted:
Status: Offline
Joined: Feb 15, 201014Year Member
Posts: 1,123
Reputation Power: 21
Status: Offline
Joined: Feb 15, 201014Year Member
Posts: 1,123
Reputation Power: 21
Credit goes to yahoo.
[ Register or Signin to view external links. ]
A newly discovered alien planet may be one of the top contenders to support life beyond Earth, researchers say.
The newfound world, a "super Earth" called Gliese 163c, lies at the edge of its star's habitable zone that just-right range of distances where liquid water could exist.
"There are a wide range of structures and compositions that allow Gliese 163c to be a habitable planet," Xavier Bonfils, of France's Joseph Fourier University-Grenoble, told SPACE.com by email.
He went on to caution that several possible uninhabitable combinations exist as well. [The Top 5 Potentially Habitable Alien Planets]
A newfound super Earth
Bonfils and an international team of astronomers studied nearly 400 red dwarf stars with the High Accuracy Radial Velocity Planet Searcher (HARPS), a spectograph on the 3.6-meter telescope at the European Southern Observatory's La Silla Observatory in Chile.
Gliese 163c was one of two alien planets found orbiting the star Gliese 163, which lies about 50 light-years from Earth in the Dorado constellation. The team found indications of a third planet as well but cannot confirm it at this time.
Weighing in at about seven times the mass of Earth, Gliese 163c could be a rocky planet, or it could be a dwarfed gas giant, researchers said.
"We do not know for sure that it is a terrestrial planet," Bonfils said. "Planets of that mass regime can be terrestrial, ocean, or Neptune-like planets."
Orbiting at the inner edge of the habitable zone, Gliese 163c takes 26 days to zip around its parent star, which is considerably dimmer than our sun. The second planet, Gliese 163b, has an orbital period of only nine days, while the third unconfirmed planet circles from a distance.
Bonfils pointed out that there is about a 2 percent chance that Gliese 163c might pass between its star and the sun from Earth's perspective. If so, scientists may be able to glean more information about the distant planet by watching it cross the face of its host star.
The research has been submitted for review and publication.
A good candidate for life
The Planetary Habitability Laboratory (PHL) at the University of Puerto Rico at Arecibo keeps a catalog of the alien worlds it considers good candidates to host life. The newly discovered Gliese 163c ranks fifth on the list.
"We are finding more potentially habitable planets now than before," PHL's Abel Mendez, who was not part of the Gliese 163c discovery team, told SPACE.com by email..
Out of the six planets on PHL's list, four have been found in the last year alone Kepler-22b, Gliese 667Cc, HD 85512b, and, of course, Gliese 163c.
"Most of these are relatively close, so we can expect to find better and closer ones as our technological sensitivity to Earth-size planets improves," Mendez said.
To rank habitable planets, Mendez and his colleagues at PHL compare them with the only planet known to host life. They rank the worlds according to how similarly their masses, diameters and temperatures match up with those of Earth.
Temperatures of alien planets are tough for researchers to estimate. Temperature is heavily influenced by atmospheric characteristics, and scientists don't know much about most exoplanets' atmospheres.
Mendez suggested that one scenario for Gliese 163c might include a balmy ocean with an atmosphere 10 times as dense as Earth's. The global ocean might slosh beneath a pink, cloud-covered sky. At around 140 degrees Fahrenheit (60 degrees Celsius), the temperature would be too hot for prolonged human exposure or complex plants or animals, but some microbes could tolerate it.
But it's also possible that Gliese 163c is too hot for even those hardy lifeforms to exist.
In the meantime, Bonfils and his team intend to use HARPS to continue their search for planets that could be ripe for life, hoping to find one that may allow astronomers to study it today rather than tomorrow.
"Although it is nice to build the sample of possibly habitable planets that will be observed with the next generation of telescopes, it would be even better if we could find a planet one could characterize with today's observatories," Bonfils said.
#2. Posted:
Status: Offline
Joined: Jun 09, 201113Year Member
Posts: 279
Reputation Power: 11
Status: Offline
Joined: Jun 09, 201113Year Member
Posts: 279
Reputation Power: 11
looks interesting but being 70 light years away I think it will be awhile till we actually are able to see it first hand
- 0useful
- 0not useful
#3. Posted:
Status: Offline
Joined: Apr 28, 201212Year Member
Posts: 898
Reputation Power: 37
Status: Offline
Joined: Apr 28, 201212Year Member
Posts: 898
Reputation Power: 37
not in our life times lol.
- 2useful
- 0not useful
#4. Posted:
Status: Offline
Joined: Sep 17, 201212Year Member
Posts: 1,880
Reputation Power: 268
Status: Offline
Joined: Sep 17, 201212Year Member
Posts: 1,880
Reputation Power: 268
Not in our lifetime guys. Unless we get a super space shuttle.
- 0useful
- 2not useful
#5. Posted:
Status: Offline
Joined: Feb 17, 201212Year Member
Posts: 3,514
Reputation Power: 136
lets build a super space shuttle then!
- 1useful
- 0not useful
#6. Posted:
Status: Offline
Joined: Jul 03, 200915Year Member
Posts: 5,886
Reputation Power: 278
Status: Offline
Joined: Jul 03, 200915Year Member
Posts: 5,886
Reputation Power: 278
That is crazy, i remember the documentary on Discovery
- 0useful
- 0not useful
#7. Posted:
Status: Offline
Joined: Aug 21, 201212Year Member
Posts: 304
Reputation Power: 10
Status: Offline
Joined: Aug 21, 201212Year Member
Posts: 304
Reputation Power: 10
You could have fixed the thread to make it look nicer.
- 2useful
- 0not useful
#8. Posted:
Status: Offline
Joined: Jul 23, 201113Year Member
Posts: 321
Reputation Power: 12
Status: Offline
Joined: Jul 23, 201113Year Member
Posts: 321
Reputation Power: 12
Its fantasy that we would ever be able to travel there but lets enjoy this earth while we can!
:pharte:
:pharte:
- 0useful
- 0not useful
#9. Posted:
Status: Offline
Joined: Dec 17, 201113Year Member
Posts: 4,441
Reputation Power: 178
Status: Offline
Joined: Dec 17, 201113Year Member
Posts: 4,441
Reputation Power: 178
That's pretty cool...
- 0useful
- 0not useful
#10. Posted:
Status: Offline
Joined: Jul 18, 201014Year Member
Posts: 1,609
Reputation Power: 73
Crazy_Horse_RDR wrote Not in our lifetime guys. Unless we get a super space shuttle.
Even if it travelled at the speed of light, it still wouldn't get there. A light year, correct me if I'm wrong, is the distance travelled by light in one year.
1 light year = 9.4605284 10^15 meters
And, as we know. Nothing (supposedly) can travel the speed of light that contains a useable form of data. I.E. a plane physically couldn't go that fast.
Also, forgot to mention, theoretically, there is already life on other planets. Look up string theory. It says that the big bang is merely either a separation or joining of other universes.
- 2useful
- 0not useful
You are viewing our Forum Archives. To view or take place in current topics click here.