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Newly Discovered Planet May be First Truly Habitable Exoplanet
Santa Clara U. ^ | 9/29/2010 | Tim Stephens

Posted on 09/29/2010 9:09:27 PM PDT by Dallas59



A team of planet hunters led by astronomers at the University of California, Santa Cruz, and the Carnegie Institution of Washington has announced the discovery of an Earth-sized planet (three times the mass of Earth) orbiting a nearby star at a distance that places it squarely in the middle of the star's "habitable zone," where liquid water could exist on the planet's surface. If confirmed, this would be the most Earth-like exoplanet yet discovered and the first strong case for a potentially habitable one.

To astronomers, a "potentially habitable" planet is one that could sustain life, not necessarily one that humans would consider a nice place to live. Habitability depends on many factors, but liquid water and an atmosphere are among the most important.

"Our findings offer a very compelling case for a potentially habitable planet," said Steven Vogt, professor of astronomy and astrophysics at UC Santa Cruz. "The fact that we were able to detect this planet so quickly and so nearby tells us that planets like this must be really common."

(Excerpt) Read more at news.ucsc.edu ...


TOPICS: News/Current Events
KEYWORDS: exoplanet; goldilocks; goldilocksplanet; goldilockszone; planet; xplanets

1 posted on 09/29/2010 9:09:31 PM PDT by Dallas59
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To: Dallas59

Three times the mass of the Earth and they call it habitable?


2 posted on 09/29/2010 9:11:49 PM PDT by Blood of Tyrants (Islam is the religion of Satan and Mohammed was his minion.)
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To: Dallas59

Note: “Really close” = 120,000,000,000,000 miles. Or about one mile away for every dollar of shortfall in the federal budget going out 50 years.


3 posted on 09/29/2010 9:14:08 PM PDT by coloradan (The US has become a banana republic, except without the bananas - or the republic.)
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To: Dallas59

The planet is tidally locked to the star, meaning that one side is always facing the star and basking in perpetual daylight, while the side facing away from the star is in perpetual darkness. One effect of this is to stabilize the planet’s surface climates, according to Vogt. The most habitable zone on the planet’s surface would be the line between shadow and light (known as the “terminator”), with surface temperatures decreasing toward the dark side and increasing toward the light side.

“Any emerging life forms would have a wide range of stable climates to choose from and to evolve around, depending on their longitude,” Vogt said.

The researchers estimate that the average surface temperature of the planet is between -24 and 10 degrees Fahrenheit (-31 to -12 degrees Celsius). Actual temperatures would range from blazing hot on the side facing the star to freezing cold on the dark side.”

Hmmm...


4 posted on 09/29/2010 9:14:40 PM PDT by Beowulf9
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To: Dallas59
Do they need women?


5 posted on 09/29/2010 9:15:04 PM PDT by garjog
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To: Blood of Tyrants

1.2 to 1.4 times the size of the Earth.


6 posted on 09/29/2010 9:15:38 PM PDT by Dallas59 (President Robert Gibbs 2009-2013)
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To: Blood of Tyrants
Time to buy stocks for an anti-gravity research firm.:-)
7 posted on 09/29/2010 9:15:57 PM PDT by TigerLikesRooster (The way to crush the bourgeois is to grind them between the millstones of taxation and inflation)
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To: Beowulf9

Then again it could be deader than a doornail. Why are they wasting their time...when so many Muslims feel bad about themselves?


8 posted on 09/29/2010 9:17:15 PM PDT by Dallas59 (President Robert Gibbs 2009-2013)
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To: Dallas59

Is it Koosbane? Are there Merdilidops there?

http://www.youtube.com/watch?v=uRhg-_HwOBc&feature=related


9 posted on 09/29/2010 9:22:04 PM PDT by QBFimi (When gunpowder speaks, beasts listen.)
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To: Dallas59

bump


10 posted on 09/29/2010 9:25:29 PM PDT by Centurion2000 (WTF happened to my country?? I joined the Marines and defended the USA and it degenerates into this?)
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To: Dallas59

I thought this planet Gleise was in the new Months or years ago.... This reeks of recycled news.


11 posted on 09/29/2010 9:36:03 PM PDT by GraceG
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To: Dallas59
The most habitable zone on the planet's surface would be the line between shadow and light...

At Columbine Sept Heures it was always dusk.

12 posted on 09/29/2010 9:40:51 PM PDT by TChad
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To: Dallas59

Can we send Algore?


13 posted on 09/29/2010 9:47:06 PM PDT by Slyfox
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To: Blood of Tyrants
Three times the mass of the Earth and they call it habitable?

Potentially habitable, sure. A surface gravity of 1.5G or so would be no impediment to life evolving there. The next generation of space telescopes will be able to determine the atmospheric composition of some exoplanets. If they detect free oxygen, it's pretty much a dead giveaway that there's life.

14 posted on 09/29/2010 9:52:58 PM PDT by Abin Sur
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To: Beowulf9
“Any emerging life forms would have a wide range of stable climates to choose from and to evolve around, depending on their longitude,” Vogt said.

Not longitude. The lines tracing presumably similar conditions, based on symmetry, would be like lines of latitude with respect to "poles" defined by the line from the star through the center of the planet. The terminator would be the "equator".

15 posted on 09/29/2010 9:55:11 PM PDT by dr_lew
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To: QBFimi

Blast from the past! Thank you very much!


16 posted on 09/29/2010 9:55:11 PM PDT by Old Sarge (Marking Time On The Government's Dime)
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To: Dallas59
If they find one full of Moon Maidens, Amazonian Women, or those lovely Green Orion Girls, do ping me. Otherwise traveling a zillion light years is pretty much a waste.
17 posted on 09/29/2010 9:55:25 PM PDT by NavyCanDo
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To: coloradan
Note: “Really close” = 120,000,000,000,000 miles.

Compared to 99.999999% of the universe, that is really close to us.

18 posted on 09/29/2010 9:55:30 PM PDT by Abin Sur
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To: Abin Sur
Ahhh... the perfect place to resettle Liberals!
19 posted on 09/29/2010 9:55:48 PM PDT by April Lexington (Study the Constitution so you know what they are taking away!)
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To: Beowulf9

Winds and weather are apt to be atrocious, but there have been SF novels speculating about life under such circumstances.


20 posted on 09/29/2010 9:57:44 PM PDT by JohnBovenmyer (Tear down that BARACK-ade!)
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To: Beowulf9

Winds and weather are apt to be atrocious, but there have been SF novels speculating about life under such circumstances.


21 posted on 09/29/2010 9:57:50 PM PDT by JohnBovenmyer (Tear down that BARACK-ade!)
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To: Dallas59

Good-Now, can we send all the leftards a one-way ticket?


22 posted on 09/29/2010 10:03:27 PM PDT by Amberdawn
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To: Dallas59

Obama needs to go check it out..... and never come back.


23 posted on 09/29/2010 10:04:48 PM PDT by diamond6 (Pray the Rosary to defeat communism and Obamacare!!)
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To: JohnBovenmyer

The price of houses on the line!!!


24 posted on 09/29/2010 10:07:29 PM PDT by Beowulf9
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To: JohnBovenmyer
Winds and weather are apt to be atrocious, but there have been SF novels speculating about life under such circumstances.

In a recent novel I read, "Ark" by Stephen Baxter, there's a debate amongst the crew as to whether or not to settle on a tidally locked planet orbiting a red dwarf. One of the characters says something to the effect of, "We are not going to live on a Krypton!"

In the end they do just that, because it winds up being the best of a bad set of choices.

25 posted on 09/29/2010 10:07:37 PM PDT by Abin Sur
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To: NavyCanDo

Are you kidding? That’s just about far enough away from Earth to keep liberals from interfering.

Now we just gotta find a way to get them to relocate.


26 posted on 09/29/2010 10:28:02 PM PDT by gogogodzilla (Live free or die!)
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To: Dallas59

There is Life on Newly Discovered Planet, First Truly Habitable Exoplanet, But Only on Saturday Night


27 posted on 09/29/2010 10:44:12 PM PDT by bunkerhill7
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To: JohnBovenmyer
Sounds like they found Jinx
28 posted on 09/29/2010 11:18:25 PM PDT by thecabal (Destroy Progressivism)
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To: Blood of Tyrants
English major in the Education department of J school. Willfully ignorant.
29 posted on 09/29/2010 11:50:36 PM PDT by Domangart
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To: April Lexington

>>Ahhh... the perfect place to resettle Liberals!<<

Too close; too nice; too much like Earth. Preferably, we can find a planet some million(s) light years away. This planet should have gravity twice that of Jupiter(12 times that of Earth), the better to crush them. The atmosphere should be methane, argon and chlorine gas, giving them plenty to clean up. Temperature range should be -40 degrees at night to +165 degrees in the daytime, allowing LIBs to holler about global warming AND global cooling.


30 posted on 09/30/2010 3:30:29 AM PDT by NTHockey (Rules of engagement #1: Take no prisoners)
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To: Dallas59

I would want to know how long the planet has actually been in the goldilocks zone (ie planet formation and star stability). Wikipedia says the star is 7-11 billion years old.

We beamed a message to this star using a radio telescope. I am not too sure that I am comfortable with doing that. A focussed radio signal is much easier to pick up.


31 posted on 09/30/2010 3:36:42 AM PDT by exhaustguy
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To: Dallas59

But three times the mass means you will weigh three times as much. The human body cannot stand that kind of gravity for long.


32 posted on 09/30/2010 5:48:24 AM PDT by Blood of Tyrants (Islam is the religion of Satan and Mohammed was his minion.)
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To: Domangart

Okay, smartass, tell me how the human body would withstand a constant 3G pull on it?


33 posted on 09/30/2010 5:53:59 AM PDT by Blood of Tyrants (Islam is the religion of Satan and Mohammed was his minion.)
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To: Blood of Tyrants
But three times the mass means you will weigh three times as much.

No it does not.
34 posted on 09/30/2010 6:29:30 AM PDT by TalonDJ
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To: Blood of Tyrants

Gravity is proportional to mass of each, but inversely proportional to the square of the distance so the bigger radius compensates.


35 posted on 09/30/2010 6:32:18 AM PDT by JohnBovenmyer (Tear down that BARACK-ade!)
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To: Blood of Tyrants
But three times the mass means you will weigh three times as much.

Incorrect. Our moon has only 1/81st the mass of the Earth, but 1/6th the surface gravity. Jupiter has 317 times the mass of the Earth, and a surface gravity of 2.5 times ours.

I've seen estimates that this planet has about 1.5 times our surface gravity. Not particularly enjoyable, but survivable.

36 posted on 09/30/2010 6:36:38 AM PDT by Abin Sur
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To: TalonDJ
The force exerted between two objects is directly proportional to the gravitational constant times the mass of the two objects multiplied and inversely proportional to the square of the distance between the two objects.

F= G*m1*m2/r2

Triple the mass and triple the force between the masses.

37 posted on 09/30/2010 6:43:02 AM PDT by Blood of Tyrants (Islam is the religion of Satan and Mohammed was his minion.)
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To: Dallas59

They finally found Kolob


38 posted on 09/30/2010 6:47:40 AM PDT by ShadowAce (Linux -- The Ultimate Windows Service Pack)
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To: Blood of Tyrants
...inversely proportional to the square of the distance between the two objects.

Here's what they are talking about.

With the larger diameter of the planet, a person standing on the surface is farther away from the center than we are here on Earth.

Thus, while the gravity would be stronger, it would not be 3X stronger.

39 posted on 09/30/2010 6:49:24 AM PDT by ShadowAce (Linux -- The Ultimate Windows Service Pack)
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To: Beowulf9

First this:


“The fact that we were able to detect this planet so quickly and so nearby tells us that planets like this must be really common.”

It does? It literally “tells us”? This is really muddled, wishful thinking.

Secondly, your observation of it being tidally locked - this is a condition of having “the wrong type of star” for habitability. The star is too cold, and therefor the planet has to be too close, and a tidally locked planet is NOT habitable.

Nope, wishful thinking. This one here that we’re standing on is the only “Privileged Planet”, designed and placed especially so us humans can flourish AND EXPLORE creation. Habitability and observability conditions just happen to “coincidentally” be the same.


40 posted on 09/30/2010 6:58:15 AM PDT by MrB (The difference between a (de)humanist and a Satanist is that the latter knows who he's working for.)
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To: ShadowAce
With the larger diameter of the planet, a person standing on the surface is farther away from the center than we are here on Earth.

You got it... also, just for argument's sake, if it is 20 lightyears away, the time it would take to build a ship that could travel that distance in a reasonable time (how many thousands of years to figure this out?), would be plenty of time to create genetic alterations that would make whatever difference habitable.

41 posted on 09/30/2010 9:01:44 AM PDT by mnehring
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To: ShadowAce; Blood of Tyrants
With the larger diameter of the planet, a person standing on the surface is farther away from the center

Exactly. Don't quit your day job Blood.
42 posted on 09/30/2010 11:25:12 AM PDT by TalonDJ
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To: Blood of Tyrants

You will also notice that little ‘r’ is squared... and on the bottom of the fraction. This means a slight increase in the radius of the planet will cause a large drop in the ‘felt gravity’ at the surface.


43 posted on 09/30/2010 11:28:03 AM PDT by TalonDJ
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To: thecabal
Sounds like they found Jinx

I wonder whether the Puppeteers will flee once they receive the message from Obama's department of religious outreach.

44 posted on 09/30/2010 11:32:50 AM PDT by JohnBovenmyer (Tear down that BARACK-ade!)
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Note: this topic is from 9/29/2010. Thanks Dallas59.
 
X-Planets
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Google news searches: exoplanet · exosolar · extrasolar ·

45 posted on 01/07/2013 6:19:24 PM PST by SunkenCiv (Romney would have been worse, if you're a dumb ass.)
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