Tech & Science How large asteroids must be to destroy a city, state, country, or the planet

05:06  02 july  2018
05:06  02 july  2018 Source:   businessinsider.com.au

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How big of an asteroid does it take to damage cities , states , countries , and the planet ? It could destroy an area the size of the US state of Virginia.

How big of an asteroid does it take to damage cities , states , countries , and the planet ? On the fourth-annual World Asteroid Day (Saturday, June 30), we take a look at estimates from NASA, Purdue University's "Impact Earth" simulator, and other sources.

a close up of text on a black background© Provided by Business Insider Inc Scientists who study asteroids often say that Earth is drifting through a cosmic shooting gallery.

Some angry space rocks, like the recent Chelyabinsk meteorite that exploded over Russia, are big enough to shatter windows and crumble walls. Others, like the one that caused the Tunguska Event of 1908, can flatten entire cities. A handful can trigger global extinctions, like the asteroid that smashed into Mexico's Yucatan Peninsula 66 million years ago.

But how big of an asteroid does it take to damage cities, states, countries, and the planet?

On the fourth-annual World Asteroid Day (Saturday, June 30), we take a look at estimates from NASA, Purdue University's "Impact Earth" simulator, and other sources.

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How this couple saved enough to pay for their own wedding while living in New York City . Share Slide. The largest known asteroid , Ceres, is about the size of Texas.

Fortunately, asteroid studies also tell us what it takes to wreck a planet . It takes at least five years to design, build and launch a spacecraft that can deflect or destroy an asteroid or comet, according to “The probability that any large asteroid is going to hit is in the near future is pretty low," Bottke says.

Most of us go through life without thinking much about rocks from space. But even a small -- and relatively frequent -- asteroid can inflict great damage.

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How large asteroids must be to destroy a city , state , country , or the planet . By numbers, most meteors are smaller than a car and burn up in the atmosphere as harmless meteors. Any larger than that, and things start getting risky.

But to recap, if you want to know if an asteroid can kill a city , asteroids can kill a whole planet , so yes, a city should be no problem. How big would an asteroid have to be to destroy just one house? Will the earth be hit by an asteroid ? What is the best area of impact on Earth for a large asteroid ?

By numbers, most meteors are smaller than a car and burn up in the atmosphere as harmless meteors.

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This is how NASA plans to protect Earth from being destroyed by an asteroid

  This is how NASA plans to protect Earth from being destroyed by an asteroid “National Near-Earth Object Preparedness Strategy and Action Plan” is the name of an 18-page report that outlines the steps that the US government will take in order to prevent asteroids from striking the planet. “National Near-Earth Object Preparedness Strategy and Action Plan” is the name of an 18-page report that outlines the steps that the US government will take in order to prevent asteroids from striking the planet.

I know that when an asteroid enters Earth's atmosphere it begins to disintegrate so how large and fast would it have to be ? 2. Destroy an entire state or country . say the size of Texas or California or Australia?

It's a first-of-its-kind mission for a spacecraft to land on a large asteroid , grab a huge boulder from its surface for further study and then How big an asteroid would need to be to wipe out New York City - Продолжительность: 1:48 Business Insider41 288 просмотров. What Will Destroy Planet Earth? |

Any larger than that, and things start getting risky.

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If you die via asteroid, this is how it will happen

  If you die via asteroid, this is how it will happen It’s incredibly unlikely. But what if?Asteroids that pose an existential threat to life on Earth only strike once every 500,000 years or more. Even the 140-meter-wide asteroids that could destroy cities and regions rain down death once every 10,000 years. And the risk of being even injured from a 20-meter object — like the one that exploded over Chelyabinsk, Russia, in 2013 and hurt nearly 1,500 people — is tiny.

For Asteroid Day, Bruce Betts reviews 5 steps needed to prevent asteroid impacts, as well as how The Planetary Society is involved in those. This seems like a good opportunity for me to review how we can prevent asteroid impacts – a 5 point plan for preventing the only large scale natural disaster

I’ve heard warnings a massive space rock is headed our way in October 2017. So how big does an asteroid have to be to flatten a city ? Now a 100-metre asteroid would destroy a small country , it’s quite large .

Some detonate into airbursts high above the ground. These explosions create shockwaves strong enough to break windows.

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200,000 asteroids trace their origins to just a handful of obliterated parents

  200,000 asteroids trace their origins to just a handful of obliterated parents <p>And that’s only the inner asteroid belt.</p>You might think of asteroids as mindless blobs of rock circling our solar system, and you’d be completely correct. But these chunks of stone have a fascinating origin story—one that scientists here on Earth are still trying to piece together.

If an asteroid hits our planet , it will cause a massive fireball. The effects of this are likely to be If the asteroids hits a city or explodes above it, buildings are likely to be set on fire - with larger Giant asteroid named 3200 Phaethon after a Greek god who almost destroyed the world will brush past

Asteroids . Quick quiz: How many planets orbit our Sun? Asteroids that large strike Earth only once every 1,000 centuries on average, NASA officials say. Smaller asteroids that are believed to strike Earth every 1,000 to 10,000 years could destroy a city or cause devastating tsunamis.

They can also emit enough light energy to cause a sunburn.

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A house-sized meteorite can explode in Earth's atmosphere with a force greater than the nuclear weapon the US dropped on Hiroshima in 1945.

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These will be the world's biggest cities in 2030

  These will be the world's biggest cities in 2030 With over 37 million residents, Greater Tokyo is the most populous metro area in the world today.&nbsp;

Vesta, the largest known asteroid , is only 329 miles (530 km) in diameter — roughly the equivalent distance of New York City to Buffalo. Asteroids near Earth also move more quickly than planets do, so telescopes need to be glued to the How a Football Field-Size Asteroid Caught Us by Surprise.

Such a space rock could flatten most buildings within 1.5 miles of ground zero.

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An asteroid the size of a 20-story building is bad news.

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With the right composition, speed, and angle of attack, a rock this size might leave a wake of destruction the size of central Paris.

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One roughly the size of a football field could obliterate New York, causing a 7.7-magnitude earthquake that might be felt than 1,000 miles away.

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An asteroid more than half a mile wide would start to have global implications.

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It could destroy an area the size of the US state of Virginia.

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Dust tossed up from the impact would block the sun and lead to rapid changes in climates across Earth.

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The crater would be more than 100 miles wide.

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The aftermath that follows would kill most life on Earth.

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In fact, this is the same size as the space rock that killed the dinosaurs.

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A London-sized asteroid would be more than just a major extinction-level event. Its impact would slow down Earth's rotation enough to make its day last almost half a second longer.

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The largest known asteroid, Ceres, is about the size of Texas.

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Lucky for us, Ceres has no chance of striking Earth.

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These will be the world's biggest cities in 2030 .
With over 37 million residents, Greater Tokyo is the most populous metro area in the world today.&nbsp;

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