NASA Is Missing Thousands of City-Killer Asteroids 😳
NASA is unable to track approximately half of the estimated 25,000 city-killer asteroids near Earth, as those positioned toward the sun's direction are undetectable. Recent impacts on the moon and close calls in 2024 demonstrate that significant asteroid threats occur regularly, though most burn up in Earth's atmosphere or impact oceans.
Summary
According to the transcript, Polymarket assigns a 1 in 4 probability of a 5-kiloton explosion occurring over Earth by year's end. The speaker highlights recent asteroid encounters, including a 2024 near-miss that passed within satellite range and a recently discovered city-killer impact on the moon that went unnoticed until after impact. While Earth benefits from its atmosphere acting as protection against smaller objects, denser asteroids composed of iron and nickel pose genuine dangers. The core problem is that NASA estimates approximately 25,000 city-killer asteroids exist in Earth's vicinity, but the agency has only identified about 13,000 of them. The remaining untracked asteroids are obscured from detection because they approach from the direction of the sun, making them invisible to current observational methods. Large impacts are described as common occurrences, though they typically either occur over oceans or burn up during atmospheric entry.
Key Insights
- Polymarket estimates a 1 in 4 chance that a 5-kiloton explosion will occur over Earth by the end of the year
- A city-killer asteroid passed within satellite range of Earth in 2024, representing a close call that few people were aware of
- A city-killer asteroid impacted the moon recently and went undetected until after impact, with the fresh crater visible online
- NASA estimates approximately 25,000 city-killer asteroids exist near Earth, but can only track about 13,000 because the other half are obscured by the sun's direction
- Asteroids composed of iron and nickel are particularly dangerous because they can penetrate Earth's atmosphere, whereas lighter objects typically burn up or impact oceans
Topics
Transcript
[0:00] polymarket.com says there's a 1 in4 chance that a 5 kiloton explosion will happen over Earth by the end of the year. >> We've had a couple of close calls even pretty recently. There was one in 2024 which passed really close to Earth. It was within our satellite range. It was a smallish object, but it was a city killer. Just a few weeks ago, a city killer hit the moon that nobody noticed until it hit. You can go online right now and see the crater. You can see how fresh it is. We have big impacts all the time, but they're usually in the ocean and it's really hard to get through our atmosphere. Luckily, our…
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