Thanks LibWhacker.
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Posted on 09/20/2013 1:45:59 AM PDT by LibWhacker
Earth will be able to host life for just another 1.75 billion years or so, according to a study published on 18 September in Astrobiology1. The method used to make the calculation can also identify planets outside the Solar System with long ‘habitable periods’, which might be the best places to look for life.
The habitable zone around a star is the area in which an orbiting planet can support liquid water, the perfect solvent for the chemical reactions at the heart of life. Too far from a star and a planet’s water turns to permanent ice and its carbon dioxide condenses; too close, and the heat turns water into vapour that escapes into space.
Habitable zones are not static. The luminosity of a typical star increases as its composition and chemical reactions evolve over billions of years, pushing the habitable zone outward. Researchers reported in March that Earth is closer to the inner edge of the Sun’s habitable zone than previously thought2.
(Excerpt) Read more at nature.com ...
lol.
Athletic Moon.
There’s no point acting all surprised about it. All the planning charts and demolition orders have been on display in your local planning department in Alpha Centauri for fifty of your Earth years, so you’ve had plenty of time to lodge any formal complaint and it’s far too late to start making a fuss about it now.
Humanit may very well not have a thousand years remaining in which to establish an extraterrestrial home to survive the extinction of Humanity on the Earth. One or two asteroid strikes may have already nearly caused the extinction of Humans not so long ago in the Paleolithic and much earlier. The Earth is due for a much larger ELE (Extinction Level Event) of the type which results in the sudden extinction of most life on the Earth. Either way, a lesser ELE or a greater ELE, Human technical civilization will be destroyed and become incapable of arising again. The current civilization has already extracted much of the more easily recoverable non-renewable natural resources of the Earth. A future civilizaton arising anew will not have access to the quantities of resources required to sustain a civilization of our current size or greater required to support extraterrestrial activities. in other words, once lost, human extraterrestrial capabilities will be unlikey to be regained in the future. The time to establish permanent extraterrestrial habitats and civillization iis now or never.
the clock is ticking, and it a race to see whether or not Humans will permanently colonize survivable cextraterrestrial communities or perish in the not to distant future at the next ELE as near as the next good sized asteroid to impact the Earth or the next supernova to burst in the local neighborhood of stars within 100 light years.
I’ll go, I have nothing better to do and I can finish my novel on the trip too
“The only problem with your theory is that we know and can prove that the moon is drifting further away from the earth.”
Evidently, you failed to read and/or understand that I wrote saying the Moon’s orbit is expanding to send the Moon farther away from the Earth. But this expansioin is destined to come to a halt when the Earth’s diurnal rotation and the Moon’s orbital period become synchronized, at what some have reported as about a 40 day period. At that point an observer of the Earth’s surface could see the Moon from only one hemisphere. This assumes the eccintricity of the Earth’s axial tilt has not already destabilized as expected and becom a 90 degree tilt.
Once the Earth and Moon have become tidally locked, the Moon’s outward drift becomes reversed with the moon losing angular momentum to the Sun and its orbit drifts downwards towards the Earth. When the drift downwards brings the Moon very close to the Earth and reaches the Roche limit for the Moon, the Moon disintegrates and rains further destruction upon the Earth.
Its better than the clown who told me that the sun is fueled by comets and dust falling into it like a great big bonfire.
That reminds me of the news article that said such and such comet is to be a spectacular site if the sun doesn’t burn it up first. (Without the sun the comet wouldn’t have a tail or be lit up, lol)
It’s a case of use it before you lose it anyway.
Ceres is the largest known asteroid in the Solar System at present with a diameter of something like 400 miles. Mining its interior to produce a habitat would produce arable alnd nearly equivalent to all of the currently arable land on the entire Earth. This is because very little of the Earth’s surface is arable land. The low gravity conditions of the Asteroid would permit the construction of large interior spaces which provides so much overhead space, an inhabitant would perceive the overhead to be a blue sky much like that of Earth. Only a few thousand feet of overhead space is required for this effect. Such a colony could support human populations numbering in the tens of millions or more.
there is enough water ice in the outer regions of the Solar system to supply enough water to fill multiple Earth oceans. This water is also the source of wcarbon dioxide for plants and oxygen for animals. The asteroids are a readily available for high grade metal ores in quantities many times greater than all of the metal ores mined by man in all of history. Artificial gravity can be produced by spinning the habitat. Nuclear energy is readily available with little need for concern about radioactive contamination. Disposal of radioactive contaminants are safely accomplished through the simple expedient of deorbiting the material into the Sun.
It's humbling. What's to say that our being here is not the result of an endeavor like that?
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