It’s not really big. There are multiple Pluto like planetoids. Also there is a hunk of rock in the asteroid belt youcould name a planet.
Comment on Pluto's Orbit
superkret@feddit.org 4 weeks ago
How can we even know it’s a planet when we haven’t observed a single orbit, yet?
Maybe it’s just a really big comet.
Gladaed@feddit.org 4 weeks ago
psud@aussie.zone 4 weeks ago
Ceres is more than a third of the mass of the asteroid belt. It’s at least an order of magnitude bigger than anything else in its orbit. It’s hardly a hunk of rock
Tlaloc_Temporal@lemmy.ca 4 weeks ago
There’s also not that much rock, only 73% of the mass. The rest is ice and mud, with half it’s volume being water in some form.
KSPAtlas@sopuli.xyz 4 weeks ago
By measuring how fast it’s moving and where it is you can find the orbit
deadbeef79000@lemmy.nz 4 weeks ago
We’ve observed enough of its orbit to know what shape it is.
NeatoBuilds@mander.xyz 4 weeks ago
How can you be so sure it doesn’t just decide to leave
MintyFresh@lemmy.world 4 weeks ago
And who could blame it?