[HN Gopher] Discussing the Neptunian desert, savanna, and ridge
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       Discussing the Neptunian desert, savanna, and ridge
        
       Author : ColinWright
       Score  : 20 points
       Date   : 2024-10-03 17:52 UTC (5 hours ago)
        
 (HTM) web link (mathstodon.xyz)
 (TXT) w3m dump (mathstodon.xyz)
        
       | slyall wrote:
       | Link to full article:
       | 
       | https://astrobiology.com/2024/09/hidden-exoplanets-between-t...
       | 
       | and the paper:
       | 
       | https://arxiv.org/abs/2409.10517
        
         | o11c wrote:
         | Note for reading the diagram: the vertical axis is planet size.
         | Only the horizontal axis at one particular vertical level is
         | relevant for the main point here.                   1 R = Earth
         | 4 R = Uranus/Neptune.         9 R = Saturn        11 R =
         | Jupiter        ?7-13 R = estimated range of viable brown dwarfs
         | by one source (*)        ?10-64 R = estimated range of red
         | dwarfs       109 R = Sun
         | 
         | (*) other sources conflict but some have obvious errors.
         | Wikipedia even has different values depending on the unit
        
       | echelon wrote:
       | When will we be able to assess the probability of a solar system
       | like our own? Right now there are observational limitations, but
       | we should have an idea about this now (or as more exoplanet
       | observatories come online)?
       | 
       | How many exoplanets have water?
       | 
       | How many are within earth-type habitability zones?
        
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       (page generated 2024-10-03 23:01 UTC)