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Comment Re:Bet against Elon if you like (Score 1) 158

Fewer land owners to complain about the data center using all of the water for cooling obviously.

The cost of putting anything in orbit is hideously expensive and there's little reason to do so in most cases. Musk just wants a reason to sell people the means getting there. If the data center could be put in space because bandwidth or latency aren't an issue, it could be put in northern Alaska, Siberia, etc. for less money.

Comment Robbing Peter to pay Paul? (Score 1) 27

Though sending PROMISE to the moon would leave Perseverance and Curiosity -- both of which remain active on Mars -- without an Earth-based testbed, Isaacman thinks it would be worth it. "We've had years now of experience operating the two rovers on the surface of Mars,...

But the older that Perseverance and Curiosity get the more engineering baby-sitting they will need. Repurposing the test rover risks shortening their life. Judging the need based on the first half of Mars missions is insufficient. Past 50 people need a doctor much more often. Rovers are similar.

Comment Re:Ribosomes are awesome (Score 1) 57

Francis Crick calculated how long it would take for life to evolve from scratch, and concluded it would take longer than the earth has existed. In response, he developed the hypothesis of panspermia

Any such calculation is likely to be off either direction by a factor of about 10 such that the age of the Earth and age of the universe is not different enough to distinguish. And we don't know all the pathways to biogenesis such that estimating the early stages is a fuzzy art.

Panspermia is certainly a realistic possibility, as some microbes have incredible survival abilities.

Note that my early description didn't mention that the chemicals the intermediate-step proto-cells would consume and produce may be partial or full fuel for the subsequent stage(s), perhaps after being altered by the environment a bit. Having to rely on the environment to "adjust" the food supply may be why separate sub-microbes are necessary.

Comment Re:How will its images compare to Hubble? (Score 2) 62

It's not the highest scope in the world, but its forte is mass surveys, not resolution, so it doesn't have to try to compete with Hubble. If it finds something interesting, then another resolution-oriented scope can zoom in.

It's great for finding moving and flashing things, as it allows automated comparisons over time of most the sky. This scope might even find Planet X, although let's not call it Planet X because Elon tainted X things. Call it Planet NoElon.

Comment Re:Ribosomes are awesome (Score 5, Interesting) 57

People seem to think that the first living organism to evolve has to be as complex as the simplest cells we know, but more likely it was much simpler. We just don't have any living examples because such protocells probably can't compete with modern ones. The first life-forms can be slow, inefficient, inaccurate at reproducing, etc. because they had zero competition. Somebody joked "union workers evolved first!"

One interesting theory is that the first living thing(s) were actually a set of complimentary proto-cells where reproduction happened in cycled stages say: A to B to C back to A, because self-replicating is hard to get right in a single step. Each stage may have fed off different chemicals. Eventually they evolved into a single unit.

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