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Comment on what would happen if a rogue, earth-size planet ran straight into the sun? anything interesting?
Rubisco@slrpnk.net 5 weeks ago
At what speed?
Comment on what would happen if a rogue, earth-size planet ran straight into the sun? anything interesting?
Rubisco@slrpnk.net 5 weeks ago
At what speed?
sxan@midwest.social 5 weeks ago
Oooo, good question. What if it were traveling, relatively, at a fair percentage of C? Say 80 or 90%? What if it went not straight through the center, but say 30% off of center? Would any mass make a complete pass through, at that velocity? It’d be about 23% more dense from relativity, but countless YouTube videos about gun ammunition has taught me that velocity is the biggest factor in armor penetration. Would it blow a huge plume of plasma out there other side?
Dude, you just made this no doubt question far, far more interesting!
cevn@lemmy.world 5 weeks ago
Fascinating. Lets say at 90% the planet spends 1 second inside the sun. Doesn’t seem like enough to melt the whole thing so it just keeps going, just a lot smaller. The core of the sun tried its best to push it back but gets pierced and the fusion reaction stops. Star killer??
peopleproblems@lemmy.world 5 weeks ago
No. You are also forgetting the density of the sun increases with depth. For instance, if it’s heading for the core - the solar core is about 155g/cm^3. Where as earth is 5.5g/cm3.
Essentially, going 0.9C is going to impact the sun, and we can say the incoming earth object is going to classically hit with 4.9*10^24 J.
At this size and and energy, we compare it to the rest energy of the entire sun (this isn’t how we would actually do it) but the sun has a total resting mass energy equivalence of like 1.8x10^41 J.
The energy of the earth like object impacting the sun is 0.000000000000000027%.
The sun effectively doesn’t even know it happened.
cevn@lemmy.world 5 weeks ago
I knew my crap science would get the real scientists in the comments, good point about the density. It would just sort of harmlessly splat.
peopleproblems@lemmy.world 5 weeks ago
Another comparison here. If a human was just made of ballistics gel, weight for weight, meaning no vital organs or anything, a 10g round would hit a target it 1/9000 the side of.
Earth, hitting the sun would be like something 1/800000 this size of.
Oh shit my lunesta kicked in. Someone better double check my numbers
netvor@lemmy.world 4 weeks ago
…and what if it was running AWAY from the sun!
Here, Fixed it for ya.
NeoNachtwaechter@lemmy.world 5 weeks ago
How many objects (not counting the “Heart of Gold”) do you know that are traveling at such speeds?