Earth-like is a very broad term. If an organism has something similar to DNA or shared any kind of chemical processes it could be “earth-like”.
As an odd hypothetical example, there is a theory that fungi could potentially spread from planet to planet. Even with a billion or so years of independent evolution, fungi on Venus and fungi on Earth could still share some of the same traits.
Conspiracy theorists: “scientists know it’s all wrong but they’re preventing the truth from coming out to protect their precious ‘theories’”
Actual scientists: “crap, our theories were dead on yet again, damn it, will someone please finally blow even a tiny hole in this thing so we can move forward”
That is a quite weak statement, I presume it implies that this result has not excluded a cosmological constant by a long shot, bacause that would have been huge.
I wonder what the final nail in the coffin will be for MOND. It seems like there’s new observations every few months supporting Lambda-CDM (even if it’s obviously not complete) over MOND. At some point, MOND is just a clever idea that was worth exploring and didn’t pan out.
Its a nice bit of tech. 73M in construction costs. The focal plane instrumentation alone weighs 10 tonnes. It includes 5,000 small computer controlled fiber positioners. The entire focal plane can be reconfigured for the next exposure in less than two minutes while the telescope slews to the next field. The DESI instrument is capable of taking 5,000 simultaneous spectra of different Galaxies
astronomy
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