Is it possible to travel to gliese 581

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The nightside could theoretically support life in pools of water if this life could adapt without photosynthesis as indeed some crustaceans krill and other exotherms and extremophilic bacterium and other lifeforms around geothermal vents do on earth. However, all these are assumptions based on the presumptions of genisis of life on earth, of which we understand little, especially early earth evolution and origins.

Most people are more focused on the day to day but soon hopefully we will get to know some pretty profound answers. Also Gliese appears to be too massive to be a flare star which makes life more probable. However Gliese does emit X-rays. I have been wondering how a spacecraft would get to Glies Could it has a near straight path or Will it get influenced by other stars that are nearby.

Looks like my guess was illogical. Once I read a very old SF book. It was about people travelling to a far Star just like Glies It took almost a lifetime. Only to discover that when they land on the planet that it was already civilized big cities by humans.

What happened is that space travel got better during their journey and actually passed them while they were flying a snail speed. I still personally believe the chance of life would be higher on one of the moons around one of the larger gaseous planets in this system. Our moon helps extend our Van Allen belts to provide gamma and x-ray irradiation shielding.

I feel this is a strong prerequisite and possible indicator of a stellar environment conducive to abiogenisis. These factors may be necessary pre-requisites to a conducive environment for life is my main point.

We could send a signal to the aliens and within 20 a worm hole could open up here on Earth because we called. I have no doubt that there is life everywhere, but that does not mean that it is intelligent like us.

Probably microbial. To be honest I really would be thrilled if the JWST finds that this planet has an oxygen atmosphere, with maybe traces of methane. We just simply must get a close up look at what is happening there!

However, we can fool ourselves. That is something best avoided. They are not likely. If the topic comes up I will reiterate the problem with these. They run into terrible problems with quantum field theory. I go away for a few days yes under a rock and I miss this, thought this was a prank or something at first.

A near Earth sized planet in the H zone, amazing, we would need more data to make any further assumptions though. We discussed the whole near impossibility of manipulating negative energy are we even sure this exist yet? In the meantime, we need to get Hal up and running. Is there any realistic chance a hobbled version could suffice? Surely we could produce a primitive semi-autonomous computer system right now. Yet how do we insure the year survival of such a complex system? With only one example of life in existance, we cannot be sure what life requires.

We may not even recognize alien life when we see it, because, well, it would be alien. Note: Behind paywall! Abstract: A statistical survey of spotted red dwarf stars that are known or suspected BY Draconis variables is presented. Typical indicators of stellar photometric activity—the amplitudes of the rotational modulation and seasonal mean brightness variations?

V and?? First, photometric variability shows a weak dependence on spectral type; second,? Thus, the spottedness of stars, like other indicators of stellar activity, depends on their global parameters. A type of rotating variable dwarf star, of spectral type G, K or M, that shows quasiperiodic light changes, ranging from a few hundredths to 0.

The variations are due to surface features, such as starspots, passing in and out of view, as the star spins on its axis. Some of these stars also show flares, similar to UV Ceti stars, in which case they belong to both types of variable star.

The M star exhibits flares that increase its luminosity periodically by a factor of 2 to 4, and also shows smaller variability keyed to its orbit and chromospheric activity. I think we are taking a great leap to consider it possible for life with it being tidally locked.

First of all, think of a seed and what it takes for one to sprout and grow. It requires just the right amount of nutrients. Then, the right temperature. Then it takes water and sunlight. If any of these variables are out-of-whack in any way, the seed does not sprout and probably dies. So, then, we apply these conditions to life on other planets.

Our planet rotates at a specific angle that gives us the 4 seasons and causes our atomsphere to churn and create rain and clouds and gives us the water cycle. It also causes our oceans to develop a current which reacts with the lower atmosphere to mediate the climates. Yes the wormhole was a joke. But I wanted to make a point that maybe any aliens there could come and visit us once they discover that we sent them a signal.

Who know maybe they already sent a spacecraft towards us since they received the first TV signal. What I am now expecting are some quack nuts that are now going to pretend that Gliese aliens are contacting them via channelling.

I expect new sects popping up and starting to worship the aliens that are super intelligent since thy get as old as Gliese years average. Compare that with our mere Earth years intelligence! SkepticTim: This variable nature does not seem to principally involve flaring. Of course it is hard to say what influence this might have on any planetary evnironment.

Olaf, I sort of figured the wormhole comment was at most half serious. When it comes to time on these planets, it is curious to note that these stars last a very long time. If the orbit of this planet is stable over very long time frames, then if it is life bearing it might remain biologically active for 10s of billions of years.

The other post of Glieses has Very popular topic we got here. Exoplanets are fun. This is even more the case if there is a chance for life on a planet. There is a bit of a journalistic funny business going on. The previous UT article has a nice picture of an Earth-like planet, complete with blue oceans etc.

The oceans would not appear that way, since there is little blue light from this star. If you stood on the surface at daylight the sky would be black, so there would be much less diffuse scatter of light that we see on Earth.

Lighting would appear similar to being under sodium lights at a stadium during a night football game. They also suggest that theatmospheric circulation and wind patterns would be relatively benign. There's onecalled Pandora? There's no info on any moons aroundGliese g, or around any other planets in its solar system yet. Butastronomers have long assumed that alien planets could have moons, and thatsome of the moons might harbor life.

This question depends upon how fast you travel. Given ourcurrent lack of StarTrek's warp drives , any interstellar expedition would have to travel farslower than the speed of light. A spaceship traveling at a one-tenth of the speed of lightwould reach Gliese g within about years, Vogt said. That would allow thespaceship to begin getting close-up pictures and a sense of the planet'satmosphere. That time scale is not promising for existing humanlifespans, but robotic explorers could more easily take up the challenge.

However, the fastest spaceships built so far don? Any discussion about alienlife on Gliese g is purely speculative at this point, according to co-discovererPaul Butler of the Carnegie Institution of Washington, in Washington, D.

Butler took a more cautionary approach as opposed to Vogt,who said his gut feeling told him "the chances of life on this planet are percent. Still, even Butler noted that anywhere you find water onEarth, you find life. He suggested that a similar condition should hold for almostanywhere in the universe, including Gliese g if it does hold water. The planet is called Gliese g because its star, Gliese, is designated "a," and the four previously discovered planets inthe system are called b, c, d and e.

But Vogt said that he has unofficially begun calling theplanet "Zarmina's World," in honor of his wife. But assuming they exist, aliens could spot our own sun asstar in their sky without requiring any telescopes or binoculars. If the alien astronomers had our current level oftechnology, they would be also able to easilydetect Neptune , and possibly Jupiter and Saturn.

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