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No Way to Stop 15000 City-Killing Asteroids From Striking Earth: NASA Scientist Warns
NASA estimates about 15,000 medium-sized asteroids remain undetected near Earth, posing regional damage risks despite ongoing search efforts finding 40% so far.
- NASA planetary defense officer Kelly Fast warned Earth lacks defenses against `city killer` asteroids, highlighting medium-sized objects as the chief concern at the American Association for the Advancement of Science conference in Arizona.
- Medium-Sized asteroids about 140 metres pose a problem because researchers estimate about 25,000 exist and have discovered only roughly 40 percent so far, and finding the rest takes time.
- By definition, near-Earth objects enter within 120 million miles of the sun, asteroids originate about 4.6 billion years ago in the main asteroid belt between Mars and Jupiter, and PHAs measure more than 460 feet and approach within about 4.6 million miles of Earth's orbit.
- NASA reported studies show 2024 YR4 poses no significant impact risk in 2032 and beyond, and most near-Earth objects do not present immediate impact danger.
- CNEOS manager Paul Chodas noted the `potentially hazardous` designation means over many centuries an orbit could evolve to threaten Earth, so scientists focus on medium objects since small asteroids hit frequently and large movie-scale asteroids are mostly cataloged.
17 Articles
17 Articles
While NASA knows the big asteroids, thousands of medium-sized "city killers" remain undetected. They could cause devastating regional damage.
No way to stop 15000 city-killing asteroids from striking Earth: NASA scientist warns
Earth faces a significant threat from thousands of undetected asteroids capable of destroying cities. NASA's planetary defence chief warns that current systems cannot reliably stop these 'city-killers'. While progress is being made with new telescopes and international efforts, a substantial ...
What Did A NASA Scientist Just Say About City-Killing Asteroids And The Alleged Damage They Could Do?
A NASA scientist has warned that thousands of city-killing asteroids could strike Earth, and there’s currently no defense humanity could use to stop them. NASA expert Kelly Fast said the ‘city-killing’ asteroids could do regional damage Kelly Fast, a planetary defense officer at NASA, expressed her fear of the 15,000 medium-sized asteroids that remain undetected but have the potential to wipe out a city due to their impact. “What keeps me up at …
NASA Says It Cannot Stop 15,000 Undetected Asteroids Coming Toward Earth
Asteroid Bennu ejecting particles. Credit: NASA / Wikimedia Commons / Public domain A hidden population of asteroids capable of destroying an entire city remains one of the biggest unresolved threats to Earth, according to NASA, planetary defense experts who say thousands of these objects have yet to be detected. Kelly Fast, a planetary defense officer at NASA, warned that the most dangerous asteroids are not the massive ones that could end life…
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