Scientists discover Earth-like, water-rich planet
Scientists discover Earth-like, water-rich planet
The so-called "super Earth" is about 42 light years away in another solar system and has a radius nearly 2.7 times larger than that of our planet, according to the study by the Harvard-Smithsonian Centre for Astrophysics.
The discovery of the planet, called GJ 1214b, represents a "major step forward" in the search for worlds similar to the Earth, added the University of California's Geoffrey Marcy in a commentary also in Nature.
The "newfound world" is too hot to sustain life as we know it, said the Harvard-Smithsonian Centre for Astrophysics in a statement.
Its density suggests however it "is composed of about three-fourths water and other ices and one fourth-rock," it said. "There are also tantalising hints that the planet has a gaseous atmosphere."
Its temperature is estimated at between 280 and 120 degrees Celsius (536 and 248 degrees Fahrenheit) with its host star about one-fifth the size of the Sun, according to the scientists.
"Despite its hot temperature, this appears to be a waterworld," says Zachory Berta, a graduate student who first spotted hints of the planet's presence.
"It is much smaller, cooler and more Earthlike than any other known exoplanet," he said in the statement.
An exoplanet is one outside of our solar system.
Berta said some of the water would likely be in crystalline form that exists at pressures greater than 20,000 times Earth's sea-level atmosphere.
Its temperature is much lower than that on the only similar discovery, called CoRoT-7b, which revolves around a star that is much hotter, the scientists say.
The CoRoT-7b has a density close to that of the Earth (5.5 grammes per cubic centimetre) and seems to be rocky, while the new discovery appears to be much less dense (1.9 g/cm3).
"To keep the planet's density that low requires that it contains large amounts of water," said Marcy. "It must contain a huge amount of water, roughly 50 percent by mass."
The "wild card" is the make-up of the gases on the planet, he said.
The planet orbits every 38 hours around a small, faint star that was first spotted by eight ground-based telescopes no larger than those used by amateur astronomers, the Harvard-Smithsonian Centre said.
Its relative closeness makes its possible to study it to determine its atmosphere.
"That will make it the first super Earth with a confirmed atmosphere -- even though that atmosphere probably won't be hospitable to life as we know it," said David Charbonneau who heads the research team.
Wow... the fact that they found one so soon would seem to support the idea that earth-like planets are common in the universe... It's only a matter of time before life is discovered on a planet other than our own... woot!
At the very least, one of these planets could be our backup plan for the apocalypse. If we can perfect hyperdrive and cryogenics before that, we're good. Course, if 2012 happens we're screwed because we won't have the time for either of those techs.
_________________
"Yeah, so this one time, I tried playing poker with tarot cards... got a full house, and about four people died." ~ Unknown comedian
Happy New Year from WP's resident fortune-teller! May the cards be ever in your favor.
Or we could just learn to look after our own planet before we go out and mess up a whole bunch more.
I think the best idea was that used in The Hitch Hikers Guide To The Galaxy. Build a colony ship and send the *really* important people off first so they can set up the systems we need, and get best pick of the land of course. You know the types of people needed to set up a new planet: politicians, middle managers, PR executives, pop music moguls etc etc Not forgetting representitives of every religion. Send them off first so they can set up the really vital stuff.
The rest of us will just have to stay here on miserable old earth and struggle along without corrupt governments, religious fanatics, greedy business people and diabolical pop music.
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Circular logic is correct because it is.
Well, that one isn't exactly earth like. It's much hotter than earth and wouldn't be able to support life as we know it.
Earthlike planets are, most likely, the exception and not common, if we use our solar system as a model. Earth is the only planet remotely similar to itself in our entire solar system. Since there are so many stars in the universe, chances are many earthlike planets do exist. Many more planets that are nothing like earth and have no complex life forms also exist. Earth is a rare gem.
For every single earth like planet out there, most likely, there are several planets like jupiter, saturn, neptune, and uranus.
WOOOOO!! ROAD TRIP!!
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The so-called "super Earth" is about 42 light years away in another solar system and has a radius nearly 2.7 times larger than that of our planet, according to the study by the Harvard-Smithsonian Centre for Astrophysics.
The discovery of the planet, called GJ 1214b, represents a "major step forward" in the search for worlds similar to the Earth, added the University of California's Geoffrey Marcy in a commentary also in Nature.
The "newfound world" is too hot to sustain life as we know it, said the Harvard-Smithsonian Centre for Astrophysics in a statement.
Its density suggests however it "is composed of about three-fourths water and other ices and one fourth-rock," it said. "There are also tantalising hints that the planet has a gaseous atmosphere."
Its temperature is estimated at between 280 and 120 degrees Celsius (536 and 248 degrees Fahrenheit) with its host star about one-fifth the size of the Sun, according to the scientists.
"Despite its hot temperature, this appears to be a waterworld," says Zachory Berta, a graduate student who first spotted hints of the planet's presence.
"It is much smaller, cooler and more Earthlike than any other known exoplanet," he said in the statement.
An exoplanet is one outside of our solar system.
Berta said some of the water would likely be in crystalline form that exists at pressures greater than 20,000 times Earth's sea-level atmosphere.
Its temperature is much lower than that on the only similar discovery, called CoRoT-7b, which revolves around a star that is much hotter, the scientists say.
The CoRoT-7b has a density close to that of the Earth (5.5 grammes per cubic centimetre) and seems to be rocky, while the new discovery appears to be much less dense (1.9 g/cm3).
"To keep the planet's density that low requires that it contains large amounts of water," said Marcy. "It must contain a huge amount of water, roughly 50 percent by mass."
The "wild card" is the make-up of the gases on the planet, he said.
The planet orbits every 38 hours around a small, faint star that was first spotted by eight ground-based telescopes no larger than those used by amateur astronomers, the Harvard-Smithsonian Centre said.
Its relative closeness makes its possible to study it to determine its atmosphere.
"That will make it the first super Earth with a confirmed atmosphere -- even though that atmosphere probably won't be hospitable to life as we know it," said David Charbonneau who heads the research team.
Wow... the fact that they found one so soon would seem to support the idea that earth-like planets are common in the universe... It's only a matter of time before life is discovered on a planet other than our own... woot!
With current technology it would take us 20,000 years to get to proximi centuri, the nearest star to our sun. To get to the water world it would take us ten times as long.
In other words we aren't going there, anytime soon.
ruveyn
In other words we aren't going there, anytime soon.
ruveyn
Jeez, ruveyn, you're such a buzzkill.
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jojobean
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Location: In Georgia sipping a virgin pina' colada while the rest of the world is drunk
I just hope the rich go first and take their crap with them.
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Check out my blog at:
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The plan is moving forward. The USS Al Gore is being built with 100% recycled materials, and will be Solar Powered.
For Homeland Security reasons it is being built underground. Volenteers will be rounded up by American Choice, and told they are on the way to bring Freedom to new worlds.
First there must be a functioning crew that can last generations, alone, in darkness, with only one set of materials to recycle.
Every ten generations we will dig them up and see if they are space ready.
I figure a thousand years of pre flight are needed to prepare for the journey.
By then we will have the science to launch them to the stars.
Staff the ship with a combination of technical personnel and reality-show contestants. That way, you can fund the trip with all the footage of the contestants ("Big Brother - IN SPACE!!"), and if supplies start running low, you can have people text in their votes of who should be thrown out an airlock to conserve resources. (Then, of course, manipulate the results, because obviously the person was jettisoned months or years ago due to the lightspeed lag in communications, but you still want the audience to feel like they had a say in the outcome...)
You know something? About halfway through this, I realized I was only kind of joking.
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Sodium is a metal that reacts explosively when exposed to water. Chlorine is a gas that'll kill you dead in moments. Together they make my fries taste good.
Just give Autistics the city of Dubai and all will be forgiven.
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"If Evolution is outlawed, only outlaws will evolve" - Jello Biafra
Check out my blog at:
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