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.
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.
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?
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
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.
You got it wrong - the poster above is not trying to prove the astronomical phenomenon through a show, the poster is saying that the show itself (called Big Bang) is real. It’s simply a joke.
Neatly showing off how our moon is exceptionally dull. Here we are, the only dot in the sunbeam that’s not black or white, and our sole natural satellite is this flat dark powder-gray.
And it’s tide-locked! We don’t even get to see all of it. Imagine if Mars had its twin enormous boulders, and they always looked like cardboard cut-outs. Thank goodness for all this water and life and crap, or we’d be a C-tier heavenly body.
The abstract does a poor job of explaining one of the primary motivations of this research: if Alcubierre drives can exist, and can be built, then it seems likely a sufficiently advanced alien species would have built them. We could therefore find them by detecting the drive failures associated with the hypothetical tech, something which is likely easier than actually building the drives ourselves.
Won’t it be funny if it turns out WE’RE the most advanced alien species? Like, we’re out here wasting time with SETI and this failed warp drive things, when we should be concentrating on UNIVERSEDOMINATION!!!
This is an actual proposed solution to the Fermi Paradox. We’re still relatively early on a universal scale. It’s possible we’re just… first. Or so early that hardly anybody else is out there yet. Could be that a billion years later, advanced life is all over the place.
In your formulation, we would also be the explanation for another species’ dark forest hypothesis…
Then a star large enough to fuse heavier elements needs to live its full life then die of a supernova to create elements heavier than iron
Lastly those remnants need to form a new solar system with a planet somewhat rich in these heavier elements to support life, as well as the time needed to have life spring up in the first place
In terms of how long all of these take, we’re pretty young cosmically
The idea is to assume mediocrity, rather than starting with the assumption that a phenomenon is special, privileged, exceptional, or even superior.[2][3]
astronomy
Gorące
Magazyn ze zdalnego serwera może być niekompletny. Zobacz więcej na oryginalnej instancji.