26 replies to this topic

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Bad news for Kepler-22b. Once deemed the most habitable world outside our solar system, it no longer looks life-friendly. More strangely, Earth's habitability rating has also taken a hit. Both results are thanks to a redefinition of the habitable zone – the region around a star in which liquid water can theoretically exist.
Also known as the Goldilocks zone, because temperatures are "just right" for life there, the habitable zone is the main tool that exoplanet hunters have to rank their finds. But researchers are still using a definition coined in 1993. "Those habitable zones have not been updated in the last 20 years," says Ravi Kopparapuof Penn State University.
He and his colleagues have a new definition. The zone's boundaries have always depended on the star's temperature, plus estimates of how well the atmospheres of any planets would absorb heat from their star. But in recent years, lab experiments have turned up new figures for how water and carbon dioxide absorb light from different types of stars. The redefinition is based on these figures – and pushes the zone further from the star than the old definition.
Now, many planets, including supposedly balmy Kepler-22b, look too hot. However, the redefinition should also bring into the habitable fold planets that were thought to be too cold.

http://www.newscient...cks-worlds.html

An even better planet than our current one may be waiting for us ...

[Asadora]

Now we just need to figure out a safe way to get there once we find it.

o0o0 We got a long way to go and a short time to get there...0o0o

[paperdyer]

We'll just get "The Bandit and the Snowman". They win every time.

[mfrmboy]

I have been told that with our current technology it would take to long for a probe or whatever to get to one of these planets. If I remember correctly hundreds of years.

[Asadora]

paperdyer, on 31 January 2013 - 01:59 PM, said:

We'll just get "The Bandit and the Snowman". They win every time.

But can we do what they say can't be done?

[sergeantflynn]

funny how scientists never make mistakes . They just update their calculations...

[marcos anthony toledo]

I wonder why there is this fear among our Elites and Scientific community that humans are not the only intelligent species in the universe. And they are running from one excuse to another to prove it. Are they that narcissistic how pathtic.

[Hazzard]

mfrmboy, on 31 January 2013 - 03:14 PM, said:

I have been told that with our current technology it would take to long for a probe or whatever to get to one of these planets. If I remember correctly hundreds of years.

Unfortunately, any route you take to the stars will be slow, even if you are powered by the most powerful nuclear propulsion technology…

A trip to Proxima Centauri, the closest star (4.22 light years from Earth) would take Voyager 1  73000 years.

[Archimedes]

mfrmboy, on 31 January 2013 - 03:14 PM, said:

I have been told that with our current technology it would take to long for a probe or whatever to get to one of these planets. If I remember correctly hundreds of years.

It would take 600 years to get to Kepler 22-b, travelling at the speed of light.

Voyager 1 has a speed of approx. 10 miles per second as it leaves the solar system.  At that rate it would take approximately ten million years to travel that far.  Interstellar distances are really just that staggeringly big.

edit: I see the previous post has addressed this.   I really should read whole threads before responding.

Edited by Archimedes, 31 January 2013 - 06:00 PM.

[kwin]

marcos anthony toledo, on 31 January 2013 - 03:29 PM, said:

I wonder why there is this fear among our Elites and Scientific community that humans are not the only intelligent species in the universe. And they are running from one excuse to another to prove it. Are they that narcissistic how pathtic.

Could be. Life is, abundant. The evidence would seem to indicate an agenda of suppression. But for whom?

[Overpopulation]

Great discovery. But who knows their could be planets outside this zone, that could have evolved life just in a different way we would suspect, but still with natural selection of course.

[AsteroidX]

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Now we just need to figure out a safe way to get there once we find it.

Ill volunteer I have a cape. And know someone thatll sew a big S on my hoodie.

[coolguy]

There life on other planets.we just have not found it yet.they found us

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marcos anthony toledo, on 31 January 2013 - 03:29 PM, said:

I wonder why there is this fear among our Elites and Scientific community that humans are not the only intelligent species in the universe. And they are running from one excuse to another to prove it. Are they that narcissistic how pathtic.

This is has absolutely nothing to do with anything.

And is completely wrong at that. The Scientific community has no fear that's why they keep on searching, out of curiosity.

[Waspie_Dwarf]

sergeantflynn, on 31 January 2013 - 03:26 PM, said:

funny how scientists never make mistakes . They just update their calculations...

Science does not claim to be the "absolute truth", it leaves that to theology. Science is a quest for the truth. Its default position is "we don't know", it then attempts to find out that which it does not know. As a result, as more is learned, understanding is bound to change. This is not science's weakness, it is its strength.

marcos anthony toledo, on 31 January 2013 - 03:29 PM, said:

I wonder why there is this fear among our Elites and Scientific community that humans are not the only intelligent species in the universe. And they are running from one excuse to another to prove it. Are they that narcissistic how pathtic.

I wonder why so many people fail to understand science or deliberately misrepresent it, especially when it hasn't confirmed their personal beliefs. Are they that narcissistic? How pathetic.

There is no fear amongst scientists about the existence of life, intelligent or otherwise, around other planets. Calculations like this are for the purpose of calculating how common it may be ann where the best places to search are. Science is about knowledge and logic, not guess work and wishful thinking.

Edited by Waspie_Dwarf, 01 February 2013 - 10:59 AM.