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Recent data from New horisons mission is interesting, suggesting there are an order of magnitude fewer galaxies (hundreds of billions, rather than 2 trillion) w
by oli5679 6y ago
Recent data from New horisons mission is interesting, suggesting there are an order of magnitude fewer galaxies (hundreds of billions, rather than 2 trillion) which should be relevant update to Fermi/great filter reasoning.
The probe is near Pluto, and so able to sky 10 times darker than Hubble, but isn't observing the modelled galaxies extrapolated from Hubble observations.
https://www.foxnews.com/science/nasa-finds-fewer-galaxies-than-first-thought https://www.foxnews.com/science/nasa-finds-fewer-galaxies-th...
- ben_w 6y agoThe source material linked to from that article is better than the article itself: https://hubblesite.org/contents/news-releases/2021/news-2021-01 https://hubblesite.org/contents/news-releases/2021/news-2021... For example, it explains why the sky would be darker from the POV of Pluto than the POV of Earth orbit (Zodiacal dust is relevant at this level). That said, I’m still surprised that the estimate was ever as high as 2 trillion; I thought the estimate had been the lower 100 billion value for most of my life.
- hermitcrab 6y agoFox News has science articles? That is more surprising to me than the science reported.