dumbass,
@dumbass@leminal.space avatar

And thats why you’ll never be a real planet!

nilclass,

Heresy! Australia will always be a planet.

lugal,

No! Austria will never be a planet nor continent. It is a white, European country and I’m willing to die on that hill!

youngalfred,

Absolute size isn’t really in the criteria for a planet though. Pluto isn’t a planet because it shares its orbit with lots of other icy bodies in the Kuiper belt.

toast,

Exactly. That’s also why Jupiter, which shares its orbit with thousands of asteroids, isn’t a planet either.

youngalfred,

Do you mean the Trojans? They’re excluded from the mass calculation of ‘clearing the neighbourhood’ because they’re in a resonant orbit - their orbit is a consequence of Jupiter’s mass.

toast,

I don’t know. I don’t think we should make excuses for Jupiter just because of its size. Pluto’s doing the best it can. Could any of us do any better, so far out from the sun?

youngalfred,

Jupiter does throw its weight around a bit too much.

toast,

Thanks to your comments, I went looking at more about Jupiter’s influence on us and read that most of the other planets are more in line with Jupiter’s orbital plane than the Sun’s equatorial plane (which sounds impressive, but maybe only makes complete sense since the planets would have all initially formed from the same disk). Anyway, thanks

youngalfred,

That’s really interesting!
I just discovered a theory about the cause of the ‘late heavy bombardment’, which is thought to have delivered water to earth via comets.

Essentially the gas giants all orbited much closer, but Jupiter and Saturn got into resonance and flung Uranus and Neptune way out (and Saturn too). Uranus and Neptune flew out into the path of a heap of ice, and their gravity pulled the ice into an orbit that collided with the terrestrial planets.

leftzero,

No kidding. The Sun - Jupiter barycentre is outside the Sun.

Murdoc,

Jupiter was declared too big to fail.

Annoyed_Crabby,

Still can’t unsee Pluto on Pluto

Novamdomum,
@Novamdomum@kbin.run avatar

Take that King Flippy Nips!

lemonmelon,

What is this, a planet for ants?!

dodgy_bagel,

It’s a close-up shot; the planet in this photo is actually much bigger than Australia.

Klear,

Then again it could be super close and the size of a potato.

dodgy_bagel,

Potatoes aren’t usually blue

Klear,

They are if they are moving towards you really fast!

dodgy_bagel,

Imagine hitting that fast ball

mindbleach,

Extremely venomous ants.

hemko,

Hey wtf put Pluto back to where it belongs. Do you have any idea how bad this is for the world economics???

mindbleach,

Would the owner of a beige 1930 dwarf planet please move it, or we will have it towed.

Murdoc,

I think a TARDIS can do that.

lugal,

Still, the surface area is much bigger. Pluto is a real continent

Uebercomplicated,

Discreetly insulting both Australia and Pluto in one sentence! Absolutely love this; will share it with all my Australia and Plutonian friends! If Earth gets attacked, it’s not my fault, but yours :'P

NigelFrobisher,

If Australia attacks Earth you’ll know you’ve been attacked.

zerofk,

Australians can’t attack Earth, they’d fall right up into the sky without some reverse-reverse-gravity system.

johsny,
@johsny@lemmy.world avatar

Small little fucker, no wonder it’s not a planet anymore.

darkdemize,
@darkdemize@sh.itjust.works avatar

Straya’s never been a planet, mate.

Zier,
@Zier@fedia.io avatar

Yeah, but it is a pretty big island.

johsny,
@johsny@lemmy.world avatar

Might as well have been. 😉

JadenSmith,

What is Pluto doing so close to Australia?

That shouldn’t be allowed. Someone tell it to go back to it’s usual orbit, this is not on.

makyo,

You didn’t know they had a thing? It lasted until Australia found out Pluto wasn’t really a planet.

Agent641,

Fuck off Pluto, we’re full!

edgemaster72,
@edgemaster72@lemmy.world avatar

It’s their payback for that whole “clears its orbit” business.

intensely_human,

They’re using it to cool up Australia

GlassHalfHopeful,
@GlassHalfHopeful@lemmy.ca avatar

Honestly never had a clue. Thanks for the share.

Zier,
@Zier@fedia.io avatar

As a former Plutonian, I can confirm it's small, that's why we immigrated to Earth. And fucking cold!

samus12345,
@samus12345@lemmy.world avatar
Zier,
@Zier@fedia.io avatar

Stop posting pictures of my family, they are very shy!!!

Numenor,

Do it.

CM400,

Wow, Pluto has approximately the same surface area as Russia

HootinNHollerin,

And now putin starts pumping out propaganda that pluto used to be russian

intensely_human,

That’s an avocado pit and you know it

mindbleach,

The Alice Springs Pluto Observatory has opened considerably under-budget.

cosmicrose,
@cosmicrose@lemmy.world avatar

This picture is inaccurate, Pluto is actually much farther away.

mindbleach,

Telephoto shot, using a 1e50 mm lens.

Swedneck,
@Swedneck@discuss.tchncs.de avatar

if anyone wants to do the math, how far away from the sun would the camera have needed to be to take such a photo?

mindbleach,

Apparent scale is inverse linear, i.e., proportional to 1 / distance. If we want the apparent scale of two objects to be about 90% accurate to their actual relative scale, their relative distances to the camera can’t be more than 10% different. Pluto being 40-ish astronomical from Earth, you’d want to shoot from about 400 AU. Voyager I should be in prime position circa 2140.

lolcatnip,

Probably not necessary to use a lens so long it can reach distant galaxies!

sirico,
@sirico@feddit.uk avatar
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