Recent comments in /f/space

MarsRocks97 t1_j2caca8 wrote

We’ll spend billions on a keystone pipeline for oil. Why can’t we do that for water. Canada and Great Lakes water literally pouring into the ocean and drought stricken states just screwed.

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DreamChaserSt t1_j2c9rtz wrote

Assuming I'm reading your comment correctly, we have found plenty of gas giants in the habitable zone, more than the number of terrestrial and super-Earth sized planets even. One notable example is Mu Arae b, over 1.6x more massive than Jupiter and could certainly hold onto a larger moon. It's orbiting an G-type star older than the sun about 50 ly away.

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CrimsonEnigma t1_j2c9imt wrote

Yea, Proxima Centauri is the red dwarf. I'm not sure about Alpha Centauri B's color. Star color is weird in and of itself; while we call stars like Alpha Centauri A and the Sun "yellow dwarfs", they're actually both white - the Sun only looks yellow because the atmosphere scatters more light in the blue end of the spectrum than the red end. Were you standing on the moon and staring at the Sun, it wouldn't appear yellow at all, though staring at the Sun usually isn't a good idea.

Incidentally, Proxima Centauri has an earth-sized planet around it that's on the inner edge of the habitable zone, though probably isn't actually habitable for the reasons OP pointed out.

There is a very tentative candidate for Alpha Centauri A. If confirmed, it would be a Neptune-sized planet also in the habitable zone (though barely), though again I must emphasize that this is *extremely* tentative. These candidates pop up around stars from time to time and a lot of them turn out to just be artifacts in the data.

If it is real, though, it should be big enough, far enough away from Alpha Centauri A, and close enough to our own solar system that we might be able to observe it with the JWST.

That's a long time off, though.

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imagine-aincrad t1_j2c95ov wrote

In reality, the world will not run out of fresh water. However, we may run out of usable water or see a drop to extremely low reserves. More water is required to sustain industries, households, and the environment as populations grow.

Aside from that, climate change has an impact on the amount of usable water we can collect, as well as the processes involved in cleaning that water for use.

However, if what you said occurs and we run out of portable water, we will definitely not use the laboratory method. It is somewhat expensive and can not be produced efficiently on a large scale.

We may need to take a more advanced approach than Israel did.

Israel’s history with water is long and distinguished. As a nation that is comprised of 60 percent desert, water technology has been at the forefront of Israel’s innovation sector.

The country now draws and desalinates 75 percent of its drinking water from the Mediterranean Sea xD.

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Strange-Ad1209 t1_j2c7x7m wrote

Solar powered Desalination of Sea Water is a well proven technology done in the Gulf states, especially Saudi Arabia. Additionally many minerals & metals are acquired during the desalination process.

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AndrewPurnell t1_j2c7jpo wrote

Not a bad thought. Hydrogen is the most abundant element in the universe and there better be oxygen around or you don’t need water. Just need to burn the hydrogen, combustion products of burning hydrogen are water and energy.

The hard part would be getting the hydrogen. Then compressing it. Out of reach for the people in the Mad Max world but if you’re in space I’m sure you have a compressor laying around. Just need to event Bussard collectors to harvest the hydrogen.

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WittyUnwittingly OP t1_j2c6vwy wrote

I have an MS in optics and photonics and a BS in nuclear engineering, and have worked in an optics research lab. Many of the formal derivations I've had to do are directly applicable to this topic. I also teach math... So, yes!

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