RegularJoe@lemmy.world to science@lemmy.worldEnglish · 10 个月前'Planet Y' theory hints at hidden Earth-size world lurking in the solar system — and it could be much closer to us than 'Planet Nine'www.livescience.comexternal-linkmessage-square32fedilinkarrow-up177arrow-down17
arrow-up170arrow-down1external-link'Planet Y' theory hints at hidden Earth-size world lurking in the solar system — and it could be much closer to us than 'Planet Nine'www.livescience.comRegularJoe@lemmy.world to science@lemmy.worldEnglish · 10 个月前message-square32fedilink
minus-squareAkt0@reddthat.comlinkfedilinkEnglisharrow-up8·edit-210 个月前Uranus is the 7th planet, followed by Neptune. Wikipedia on Planet 9 edit: added Planet 9 article
Uranus is the 7th planet, followed by Neptune.
Wikipedia on Planet 9
edit: added Planet 9 article