The European Space Agency (Esa) and Nasa are planning missions to test how the course of asteroids and comets can be altered by an impact.I love how they know what 100% of the NEAs even is. Just last year an NEA was detected that could have caused massive damage on Earth. The catch is, it was detected after it passed by Earth. In fact, it passed so close to us, it came closer to the Earth than the moon does. That was just last year and everything is going so swimmingly that we'll have removed all threat from meteor impacts in the next 30 years?
Esa's mission Don Quijote will send a spacecraft crashing into the surface of a space rock to measure the effects. In 2005, Nasa's Deep Impact will monitor the outcome of blowing a hole in comet Tempel 1.
Scientists hope this will help them learn how to destroy or deflect an asteroid on a collision course with Earth.
According to Benny Peiser, of John Moores University, UK, the threat of cosmic mega disasters will be essentially "abolished within 30 years".
"A quiet and largely unnoticed technological revolution is dramatically accelerating the rate at which near-Earth asteroids (NEAs) are discovered," he said.
In 1995 we knew about 300 NEAs, today we know about 3000 - and within 20 years we could be aware of 90% of all nearby space rocks, he says.
"For the first time in the history of evolution we are closing this window of vulnerability."
Don't forget that there's also the fact that we've never deflected or redirected a meteor before. We've still got a lot of learning to do and one mission isn't going to give us all the answers we need to do it. Look how fast the space program runs normally. In the past 30 years we haven't been as far as the moon.
What this BBC article also fails to do is dress these natural disasters in realistic clothing. For instance here's another excerpt:
The potential threat that scientists currently have their eye on is an insecure rock - the size of the Isle of Man - in the Canary Island of La Palma.What the article fails to talk about, or really even suggest, is that this rock, in itself, could be a terrorist target. They wouldn't need planes, bombs, or anything. All they'd have to do, in theory, is get that rock to fall into the ocean.
The rock is in the process of slipping into the sea and Professor McGuire [director of the Benfield Grieg Hazard Research Centre] fears that when it finally collapses, the resulting tsunami will cause massive destruction along the coasts of countries like the USA, UK and many on the African continent, within a matter of hours.
The triggering factor could be the eruption of the volcano on La Palma, called Cumbre Vieja, which could feasibly blow "anytime", according to Professor McGuire.
So, in closing, I'm wondering just how secure the Canary Island of La Palma is...
Read the original BBC News article.
From BBC News:
Nature 'mankind's gravest threat'
Last Updated: Monday, 9 August, 2004, 17:54 GMT 18:54 UK
Giant tsunamis, super volcanoes and earthquakes could pose a greater threat than terrorism, scientists claim.
Global Geophysical Events, or "Gee Gee's", as they are nick-named, are not being taken seriously enough, they say.
The global community needs to monitor these risks, and develop strategies to cope in the face of a catastrophe.
However, we are making good progress in reducing the threat of asteroid impacts, the researchers said during a briefing at the Royal Institution, UK.
Battening down
Since 9/11 we have become acutely aware of the threat of terrorism. Governments worldwide are battening down the hatches and ratcheting up the security.
But, in terms of grave threats, are we really looking in the right direction?
Giant walls of water that can devastate coastal cities, volcanoes so big that their ash crushes houses 1,500km (932 miles) away, giant earthquakes and asteroid impacts. These are very rare events and, if we are lucky, nothing like them will happen in our lifetimes.
But in the longer term, Gee Gee's may be our undoing if we do not take action. According to researchers, careful preparation could potentially save thousands of lives.
"In any one year the chances of one of these things happening is probably much less than 1%," said Bill McGuire, director of the Benfield Grieg Hazard Research Centre. "But in the longer term it is 100%.
"We need to raise awareness, identify threats and improve surveillance.
"We need to plan what we will do if these things happen."
Super eruption
Volcanoes and earthquakes are relatively common occurrences, but Gee Gee's are on an altogether different scale.
The last "super volcanic eruption" was back in April 1815, when Tambora in Indonesia exploded violently, in what was the largest eruption in historic time.
The eruption column reached a height of about 44 km (28 miles), ash fell as far as 1,300 km (800 miles) from the volcano - and an estimated 92,000 people were killed.
Rare though they are, events this catastrophic need to be taken very seriously.
The potential threat that scientists currently have their eye on is an insecure rock - the size of the Isle of Man - in the Canary Island of La Palma.
The rock is in the process of slipping into the sea and Professor McGuire fears that when it finally collapses, the resulting tsunami will cause massive destruction along the coasts of countries like the USA, UK and many on the African continent, within a matter of hours.
"Eventually the whole rock will collapse into the water, and the collapse - when it happens - will devastate the Atlantic margin," said Professor McGuire.
The triggering factor could be the eruption of the volcano on La Palma, called Cumbre Vieja, which could feasibly blow "anytime", according to Professor McGuire.
Many researchers working in the field of Gee Gee's would like better monitoring of Cumbre Vieja, so that advance warning can be given for the possible collapse of the rock.
"We need to be out there now looking at when an eruption is likely to happen," said Professor McGuire. "Otherwise there will be no time to evacuate major cities."
Cosmic threat
Global governments are not entirely ignoring the threat of Gee Gee's, however.
The greatest danger to humanity comes from asteroids, but work funded largely by the US government is swiftly tackling this threat.
The European Space Agency (Esa) and Nasa are planning missions to test how the course of asteroids and comets can be altered by an impact.
Esa's mission Don Quijote will send a spacecraft crashing into the surface of a space rock to measure the effects. In 2005, Nasa's Deep Impact will monitor the outcome of blowing a hole in comet Tempel 1.
Scientists hope this will help them learn how to destroy or deflect an asteroid on a collision course with Earth.
According to Benny Peiser, of John Moores University, UK, the threat of cosmic mega disasters will be essentially "abolished within 30 years".
"A quiet and largely unnoticed technological revolution is dramatically accelerating the rate at which near-Earth asteroids (NEAs) are discovered," he said.
In 1995 we knew about 300 NEAs, today we know about 3000 - and within 20 years we could be aware of 90% of all nearby space rocks, he says.
"For the first time in the history of evolution we are closing this window of vulnerability."
The greatest danger to humanity comes from asteroids, but work funded largely by the US government is swiftly tackling this threat.
The European Space Agency (Esa) and Nasa are planning missions to test how the course of asteroids and comets can be altered by an impact.
Esa's mission Don Quijote will send a spacecraft crashing into the surface of a space rock to measure the effects. In 2005, Nasa's Deep Impact will monitor the outcome of blowing a hole in comet Tempel 1.
Scientists hope this will help them learn how to destroy or deflect an asteroid on a collision course with Earth.
According to Benny Peiser, of John Moores University, UK, the threat of cosmic mega disasters will be essentially "abolished within 30 years".
"A quiet and largely unnoticed technological revolution is dramatically accelerating the rate at which near-Earth asteroids (NEAs) are discovered," he said.
In 1995 we knew about 300 NEAs, today we know about 3000 - and within 20 years we could be aware of 90% of all nearby space rocks, he says.
"For the first time in the history of evolution we are closing this window of vulnerability."
(c)BBC 2004
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