151
submitted 2 days ago by MicroWave@lemmy.world to c/world@lemmy.world

Summary

NASA has lowered the estimated risk of asteroid 2024 YR4 striking Earth in December 2032 to 1.5%, down from 3.1% a day earlier. The European Space Agency's (ESA) estimate stands at 1.38%.

The asteroid, 40-90 meters wide, could cause significant city-level destruction but not a global catastrophe.

The projected impact corridor spans the Pacific, South America, Africa, and South Asia.

NASA also estimates a 0.8% chance of the asteroid hitting the Moon.

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[-] samus12345@lemm.ee 7 points 1 day ago
[-] FlyingSquid@lemmy.world 16 points 1 day ago

Everyone hoping there's still a chance, you need to remember... this is only a city-killer asteroid.

We need to hope for a much bigger asteroid.

[-] NotSteve_@lemmy.ca 3 points 22 hours ago

If the alien movies serve us correctly, this is luckily going to hit the USA; possibly Washington DC directly.

[-] CanadaPlus@lemmy.sdf.org 2 points 1 day ago

If it hit the middle of the ocean, it could be cool and nothing else.

[-] Spacehooks@reddthat.com 4 points 1 day ago

Would have been funny if it hit Buenos aires

[-] Wahots@pawb.social 7 points 1 day ago

As long as it falls on the right city, it would do the entire world a massive, once in 500 years favor.

[-] Strawberry 6 points 1 day ago

Unfortunately North America doesn't fall under the possible impact zone

[-] samus12345@lemm.ee 4 points 1 day ago

More proof that there's no god.

[-] itslilith 2 points 23 hours ago

We have a few years to improve our asteroid deflection capabilities to change that

[-] HungLikeAHoers2010@lemmy.ca 2 points 1 day ago

Washington D.C. I hope.

[-] frog_brawler@lemmy.world 1 points 1 day ago

There would be enough warning to get people out of the city.

[-] hungryphrog 1 points 1 day ago

If it does, I think a bunch of new religions are going to pop up.

[-] jj4211@lemmy.world 5 points 1 day ago

The global astronomical community expects the odds of an asteroid to hit Earth in December 2032 to eventually fall to zero.

I love how they make it seem like some insider expertise versus knowing basics of how percentages work.

[-] CanadaPlus@lemmy.sdf.org 4 points 1 day ago

I mean, without knowing what the number represents, it's not obvious why it goes up and then suddenly drops like this.

They basically predict a cross-section of places it could go through, which shrinks with improved data. If the Earth is still inside, that makes it's share go up. Eventually, it hits an edge and the share drops to zero suddenly

[-] SlothMama@lemmy.world 42 points 2 days ago

What do we need to get this to %100?

[-] TransplantedSconie@lemm.ee 26 points 2 days ago

It's probably made up of dense materials like iron. Let's pile all the earth's magnets at the White House!

[-] hungryphrog 2 points 1 day ago

I'll give mine, as long as someone helps with the shipping!

[-] Microplasticbrain@lemm.ee 7 points 1 day ago

So you're telling me there's still a chance

[-] chiliedogg@lemmy.world 9 points 1 day ago

Bets on it being totally ignored by the world if it turns out to be aimed at Africa?

[-] Syntha@sh.itjust.works 6 points 1 day ago

Africa actually does seem to be the most likely impact if it were to hit. The predicted impact would be along the equator.

[-] starman2112@sh.itjust.works 13 points 2 days ago* (last edited 2 days ago)

Can we please not post daily updates? This is still 7 years away

[-] Zachariah@lemmy.world 5 points 1 day ago
[-] starman2112@sh.itjust.works 3 points 1 day ago

I am down to have monthly updates for the next few years, weekly updates through 2031, and daily updates throughout 2032

I just feel like if we do daily updates for the next 7 years when it's in all likelihood going to miss us, we'll be too complacent when an asteroid does have an impact trajectory

[-] vivi@slrpnk.net 15 points 2 days ago

Reminder that the asteroid is only large enough to destroy a city and, even given the rare chance of it hitting Earth, in all likelihood would land in the ocean and cause no damage. It's not a doomsday asteroid

[-] match@pawb.social 16 points 2 days ago

imagine if it falls and perfectly annihilates the trump administration though

[-] marcos@lemmy.world 7 points 2 days ago

Unfortunately, Washington is outside of the possible impact zone. (Well, Washington in Brazil is inside, but it's not about that one.)

[-] Wahots@pawb.social 2 points 1 day ago

DART successfully moved an astroid that was probably way bigger!

[-] Cryan24@lemmy.world 10 points 2 days ago

Well, that's disappointing..

[-] sunglocto@lemmy.dbzer0.com 10 points 2 days ago
[-] LongLive@lemmy.world 6 points 2 days ago

🙏🙏🙏

[-] antlion@lemmy.dbzer0.com 9 points 2 days ago

Just give us the confidence interval and stop updating. We will know better in January 2029 once it has passed by and been tugged by our gravity and the moons.

[-] Splitwood@lemmy.world 2 points 1 day ago

The way the world is going, it might not be a bad thing if it hits us.

[-] Canadian_Cabinet@lemmy.ca 6 points 2 days ago

Damn. The bugs need to up their accuracy

[-] Carvex@lemmy.world 6 points 2 days ago

Giant Meteor for Earth President 2032!

[-] crank0271@lemmy.world 5 points 2 days ago

Why wait? The best time would have been the dawn of civilization. The second best time is now.

[-] Randomgal@lemmy.ca 5 points 2 days ago

Dontgivemehope.meme

[-] Generic_Idiot@lemm.ee 2 points 1 day ago
[-] ms_lane@lemmy.world 4 points 2 days ago
[-] Zorque@lemmy.world 2 points 1 day ago

Is this the new seven minutes to midnight? We're 1.5% to asteroid.

[-] Zorsith 2 points 2 days ago

I feel like hitting the moon could fuck us up even worse long term, with effects on the ocean?

[-] ryedaft@sh.itjust.works 5 points 2 days ago

Much much much much larger objects have hit the moon in the past

[-] catloaf@lemm.ee 3 points 2 days ago

Well we'd lose the tides, which would devastate ocean life. We'd lose moonlight, which would devastate nocturnal animals. The axial tilt would change, so seasons would become more even, devastating plants that rely on seasonal cycles, or become more extreme, devastating everything.

The book Seveneves explores this scenario, but is mostly about how humanity moves to space to survive.

[-] robbinhood@lemmy.world 1 points 1 day ago

The moon would shrug that rock off without noticing. Any changes in measurements (mass, velocity, etc.) would be minuscule.

[-] Zorsith 1 points 2 days ago* (last edited 2 days ago)

Could it even completely obliterate the moon? Just not being tidally locked would be awful, but completely changing its trajectory/orbit and probably fuck up our atmosphere with debris seems more likely

[-] catloaf@lemm.ee 3 points 2 days ago

It's probably not big enough to shatter the moon, but enough to at least alter its orbit. I'm not enough of an astrophysicist to say how much. I haven't looked up the forces involved, so I can't even give a ballpark estimate.

[-] starman2112@sh.itjust.works 1 points 1 day ago* (last edited 1 day ago)

It technically would alter the moons orbit, but not by a lot. This asteroid would impact with roughly the energy of a nuclear bomb, which sounds like a lot, but on the scale of our moon it's negligible.

A rough estimation given my limited understanding of physics is that to change the moon's orbit by 1 m/s, you would need to impart something like 10²² joules of energy into it. Wikipedia says that if this asteroid hits the moon, the impact energy will be around 10¹⁶ joules. I don't know how much you know about exponents, but 10¹⁶ is approximately 0% of the way to 10²², and that's just change of 1 m/s

Of course, someone who actually understands physics is free to correct me if I'm wrong

this post was submitted on 20 Feb 2025
151 points (100.0% liked)

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