ByteOnBikes@slrpnk.net to Showerthoughts@lemmy.world · 1 day agoI wonder if there exists people who aggressively believe mushrooms are plants, similar to people who defend Pluto as a planet.message-squaremessage-square71fedilinkarrow-up1210arrow-down114file-text
arrow-up1196arrow-down1message-squareI wonder if there exists people who aggressively believe mushrooms are plants, similar to people who defend Pluto as a planet.ByteOnBikes@slrpnk.net to Showerthoughts@lemmy.world · 1 day agomessage-square71fedilinkfile-text
minus-squaredeadbeef79000@lemmy.nzlinkfedilinkarrow-up5·edit-215 hours agoI believe the rule of thumb is binary planets’ barycentre is external to either body. This is the case with Pluto/Charon, I think it’s also the case with Earth/Moon.
minus-squareSkyeStarfall@lemmy.blahaj.zonelinkfedilinkarrow-up8·11 hours agoIt is not the case with the earth and the moon. It would be if the moon was 40% more massive
minus-squaredeadbeef79000@lemmy.nzlinkfedilinkarrow-up1·2 hours agoYeah, I went and checked after posting. My hunch is that if the moon was closer it would ‘drag’ the barycentre closer to the moon. Which, given the moon is slowly receeding, means it was probably a binary early on in the formation of the solar system.
I believe the rule of thumb is binary planets’ barycentre is external to either body. This is the case with Pluto/Charon,
I think it’s also the case with Earth/Moon.It is not the case with the earth and the moon. It would be if the moon was 40% more massive
Yeah, I went and checked after posting.
My hunch is that if the moon was closer it would ‘drag’ the barycentre closer to the moon.
Which, given the moon is slowly receeding, means it was probably a binary early on in the formation of the solar system.