Easy. The asteroid is the size of 5 minivan school busses that pick up the one kid isolated in the suburb development that actually belongs to the next town over but overstepped the border because the farm it replaced was owned since before the state existed. Really not that hard to figure out
What's needed is a 24/7 space-based observation system, not rely on leftover observation time on telescopes and amateur aid. The near misses are rarely even close, and the sizes are small enough to at most endanger a small area, but it's a lesson that if there ever was a big one, we wouldn't even know or be able to do anything. Find the big ones very early, we might be able to change the future, but we won't find them with how we look now.
Yeah makes sense, but bilions and bilions on stupid unnecessary wars that kill hundreds of thousands of innocents OBVIOUSLY isnt too expensive, no no. If you'll excuse me, have to ask for another 100 million from my sponsers to fund my political events that benefit no one but my own interests, ciao.
Large NEOs are very unlikely at this point for the reasons you've given. It's advanced warning on anything else that's needed. Redirection is another topic, but we have no experience and only theory on the best ways to do it, and wouldn't know which technique to try before a close examination (which means time to find it and get to it just to figure that out). As for advanced warning for evacuation, that's probably the most likely scenario, but it's also morbidly funny to mention in a thread discussing near misses found days before its passing, and often we see articles about the rock after the fact. (Although maybe it was known about before by experts, just didn't hit the press in time)
Based on assumptions about how much light is reflected, 2026JH2 is currently estimated to be between 15 and 30 meters (49 and 98 feet) in diameter. At the smaller end of that range, Michel said, it would be similar in size to a bolide, or fireball, that exploded in the atmosphere over the city of Chelyabinsk, Russia, in 2013, shattering windows and injuring 1,000 people. At the highest end of the range, it would be closer in size to an object that exploded near the Podkamennaya Tunguska River in Siberia in 1908, which pulverized large swaths of forest.
I find it amazing that doubling a small object’s size seems to a produce a non-linear increase in impact effect. The majority of the earth’s surface is water or sparsely inhabited, but something just 30 meters across has the effect of a low nuclear yield. A week’s worth of notice on one of these striking near a large city would be pretty chaotic.
With all the private space exploration gaining traction, it surprises me that there’s not more dedicated to detecting objects that intersect our trajectory.
Additionally, doubling the diameter results in doubling the surface area to volume ratio which increases the percentage of the mass that survives atmosphere entry.
27 Comments
Codpiece@feddit.uk · 63 pts · 93d
Anything except metric.
Elilol@fedinsfw.app · 14 pts · 93d
snooggums@piefed.world · 6 pts · 93d
Would little craters that look like bullet impacts count?
X@piefed.world · 4 pts · 93d
Don’t see why not
Know_not_Scotty_does@lemmy.world · 7 pts · 93d
This is the only unit of public transportation Americans will understand.
LurkingLuddite@piefed.social · 4 pts · 93d
But what kind? Flat face? Oldschool? Short bus?
There are many sizes of school busses!
kamenlady@lemmy.world · 4 pts · 93d
The twin peaks kind of school bus
XeroxCool@lemmy.world · 2 pts · 92d
Easy. The asteroid is the size of 5 minivan school busses that pick up the one kid isolated in the suburb development that actually belongs to the next town over but overstepped the border because the farm it replaced was owned since before the state existed. Really not that hard to figure out
LurkingLuddite@piefed.social · 2 pts · 92d
See now that I can imagine the size of.
Rhaedas@fedia.io · 22 pts · 93d
*Another
What's needed is a 24/7 space-based observation system, not rely on leftover observation time on telescopes and amateur aid. The near misses are rarely even close, and the sizes are small enough to at most endanger a small area, but it's a lesson that if there ever was a big one, we wouldn't even know or be able to do anything. Find the big ones very early, we might be able to change the future, but we won't find them with how we look now.
bjoern_tantau@swg-empire.de · 26 pts · 93d
Let me introduce you to the Vera C. Rubin Observatory.
If I recall correctly a similar one was planned for the northern hemisphere but science is too expensive.
snowydroopz@lemmy.world · 17 pts · 93d
Yeah makes sense, but bilions and bilions on stupid unnecessary wars that kill hundreds of thousands of innocents OBVIOUSLY isnt too expensive, no no. If you'll excuse me, have to ask for another 100 million from my sponsers to fund my political events that benefit no one but my own interests, ciao.
LurkingLuddite@piefed.social · 7 pts · 93d
Now now, if we compare things to military budgets then a lot of things become ridiculously obvious...
degenerate_neutron_matter@fedia.io · 13 pts · 93d
Rhaedas@fedia.io · 4 pts · 93d
Large NEOs are very unlikely at this point for the reasons you've given. It's advanced warning on anything else that's needed. Redirection is another topic, but we have no experience and only theory on the best ways to do it, and wouldn't know which technique to try before a close examination (which means time to find it and get to it just to figure that out). As for advanced warning for evacuation, that's probably the most likely scenario, but it's also morbidly funny to mention in a thread discussing near misses found days before its passing, and often we see articles about the rock after the fact. (Although maybe it was known about before by experts, just didn't hit the press in time)
FarraigePlaisteach@lemmy.world · 12 pts · 93d
Sorry folks. Back to work.
NoSpotOfGround@lemmy.world · 7 pts · 93d
/c/disappointingnews
Hayduke@lemmy.world · 7 pts · 93d
Shame
wuffah@lemmy.world · 6 pts · 93d
I find it amazing that doubling a small object’s size seems to a produce a non-linear increase in impact effect. The majority of the earth’s surface is water or sparsely inhabited, but something just 30 meters across has the effect of a low nuclear yield. A week’s worth of notice on one of these striking near a large city would be pretty chaotic.
With all the private space exploration gaining traction, it surprises me that there’s not more dedicated to detecting objects that intersect our trajectory.
zout@fedia.io · 12 pts · 93d
If you double the diameter, the volume increases 8-fold, and also the mass.
eleijeep@piefed.social · 1 pts · 93d
Additionally, doubling the diameter results in doubling the surface area to volume ratio which increases the percentage of the mass that survives atmosphere entry.
ikidd@lemmy.dbzer0.com · 5 pts · 93d
Small ones will mostly ablate in the atmosphere. Bigger ones will still end up solid enough to come apart and either strike or explode above ground.
kurmudgeon@lemmy.world · 5 pts · 92d
Damn... We could use a reset.
NegativeLookAhead@lemmy.ml · 5 pts · 93d
Dammit
YoureHotCupCake@lemmy.world · 4 pts · 92d
Damn maybe next time.
altphoto@lemmy.today · 3 pts · 92d
This is a report from the new stupid unscientific NahSAa. I'm sure its just a distraction...
....oh shit! I just came back from 3 weeks in the future and we're pretty much gonners. Love each other, it could be the last time.
MehBlah@lemmy.world · 2 pts · 93d
By how many pygmy marmosets this time?
unknown@piefed.social · 2 pts · 93d
Don't Look Up had the good ending, man this timeline sucks.
diabetic_porcupine@lemmy.world · 1 pts · 88d
A thing you didn’t know about did nothing. The end .