PE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> Bruce Willis Memorial Asteroid Impact Thread

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Offline Golden Oxen

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Bruce Willis Memorial Asteroid Impact Thread
« on: April 24, 2012, 12:24:56 AM »
astroengine writes, quoting Discovery: "The source of loud 'booms' accompanied by a bright object traveling through the skies of Nevada and California on Sunday morning has been confirmed: it was a meteor. A big one. It is thought to have been a small asteroid that slammed into the atmosphere at a speed of 15 kilometers per second (33,500 mph), turning into a fireball, delivering an energy of 3.8 kilotons of TNT as it broke up over California's Sierra Nevada mountains. Bill Cooke, head of NASA's Meteoroid Environment Office, classified it as a 'big event.' 'I am not saying there was a 3.8 kiloton explosion on the ground in California,' Cooke told Spaceweather.com. 'I am saying that the meteor possessed this amount of energy before it broke apart in the atmosphere. (The map) shows the location of the atmospheric breakup, not impact with the ground.' Interestingly, this event was bigger than asteroid 2008 TC3 that exploded over the skies of Sudan in 2008 after being detected before it hit.           :Thinkingof_: :"http://science.slashdot.org/story/12/04/24/0252246/asteroid-the-size-of-a-minivan-exploded-over-california 
« Last Edit: January 05, 2015, 10:30:27 PM by RE »
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Offline Surly1

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I recently read an article where they attributed the loud noises that people are reporting, particularly in the middle of the country, to such phenomena. The Tunguska event was an enormously powerful explosion that occurred near the  Tunguska River on June 30 1908.  The explosion is believed to have been caused by the air burst of a large meteoroid or comet fragment at an altitude of 3--6 mi. above the Earth's surface. What if some of these unexplained sounds are a similar event?
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Offline sensetti

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Offline Golden Oxen

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Astronomers Catch Asteroid in Near Miss Video ( It Is 2012 Folks)
« Reply #4 on: June 21, 2012, 03:15:33 AM »
Astronomers Catch Asteroid In Near-Miss Video
Posted by samzenpus on Thursday June 21, @05:26AM
from the skin-of-your-teeth dept.
ananyo writes in with a story about an asteroid near miss and a neat video taken by researchers. "It may look like a blurry blob, but researchers using the InfraRed Telescope Facility (IRTF) in Hawaii have posted a video of 2012 KT42 ó a small asteroid that zipped past Earth at a distance of just three Earth radii on 29 May ó the sixth closest encounter of any known asteroid. The bright asteroid appears fixed, while background stars zip past but in fact the asteroid is zipping along at 17 kilometres per second. 'You get the view of riding along with it,' says planetary scientist Richard Binzel of the Massachusetts Institute of Technology in Cambridge, who led the observations. At its closest, the asteroid was at a distance between the orbit of the space station (about 1 Earth radii) and geosynchronous satellites (about 6 Earth radii)."
http://science.slashdot.org/story/12/06/21/0211216/astronomers-catch-asteroid-in-near-miss-video       
                 
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Offline Golden Oxen

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The big day is almost here: on Feb. 15, asteroid 2012 DA14 will come extremely close to Earth.

How close exactly? Just 17,200 miles above our planet's surface, according to NASA. That puts the 50-meter-wide space rock nearer to Earth than many satellite orbits (just check out the video above).

"This is a record-setting close approach," planetary scientist Don Yeomans of NASA's Near Earth Object Program at the Jet Propulsion Laboratory in Pasadena, Calif., said in a written statement. "Since regular sky surveys began in the 1990s, we've never seen an object this big get so close to Earth."

                              <a href="http://www.youtube.com/v/rtesZxRlqOE&fs=1" target="_blank" class="new_win">http://www.youtube.com/v/rtesZxRlqOE&fs=1</a>

http://www.huffingtonpost.com/2013/01/31/asteroid-2012-da14-earth-nasa_n_2592262.html?icid=maing-grid10%7Chtmlws-sb-bb%7Cdl3%7Csec1_lnk1%26pLid%3D264882   :icon_study:
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Offline Golden Oxen

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Re: Asteroid 2012 Can we know about every asteroid?
« Reply #6 on: February 15, 2013, 12:13:18 AM »
Asteroid 2012 DA14: Can we know about every asteroid?
By Jason Palmer Science and technology reporter, BBC News

Something to note about asteroid 2012 DA14, due to make an attention-grabbing but harmless pass by the Earth on Friday: its name.

Near-Earth objects like these have for a number of years been named starting with the year of their discovery.

We only found out about this Olympic-swimming-pool-sized rock kicking around in our cosmic neighbourhood a year ago.

A month before that, one called 2012 BX34 whizzed by at a distance of 65,000km (41,000mi) - that one had only been discovered two days before.

And a few years before that, an 80-tonne space rock called 2008 TC3 ploughed into the Earth's atmosphere, largely burning up and scattering fragments over the Sudan - just 20 hours after it was discovered.

In 2009, a fireball attributed to a 10m asteroid lit up the skies over Indonesia, completely unannounced.

The list goes on. The point is that astronomers say that we don't know anything about 5 or 10% of the near-Earth asteroids that are larger than 1km in size - 20 times larger than this week's visitor. That's possible civilisation-ending stuff.

"People think that in this day and age we've got this problem covered," said Stephen Lowry of the University of Kent.

"We're far from covering this problem, believe you me," he told BBC News.

www.bbc.co.uk/news/science-environment-21459861  :icon_study:
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Offline Golden Oxen

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Meteorite hits central Russia, 400 hurt
« Reply #7 on: February 15, 2013, 01:20:06 AM »
YEKATERINBURG/CHELYABINSK, Russia (Reuters) - About 400 people were injured when a meteorite shot across the sky in central Russia on Friday sending fireballs crashing to Earth, smashing windows and setting off car alarms.

Residents on their way to work in Chelyabinsk heard what sounded like an explosion, saw a bright light and then felt a shockwave, according to a Reuters correspondent in the industrial city 1,500 km (950 miles) east of Moscow.

The meteorite raced across the horizon, leaving a long white trail in its wake which could be seen as far as 200 km (125 miles) away in Yekaterinburg. Car alarms went off, windows shattered and mobile phones worked only intermittently.

Chelyabinsk city authorities said about 400 people sought medical help, mainly for light injuries caused by flying glass.

"I was driving to work, it was quite dark, but it suddenly became as bright as if it was day," said Viktor Prokofiev, 36, a resident of Yekaterinburg in the Urals Mountains.

"I felt like I was blinded by headlights," he said.

No fatalities were reported but President Vladimir Putin, who was due to host Finance Ministry officials from the Group of 20 nations in Moscow, and Prime Minister Dmitry Medvedev were informed.

A local ministry official said the meteor shower may have been connected with an asteroid the size of an Olympic swimming pool that was due to pass Earth at a distance of 27,520 km (17,100 miles) but this could not be confirmed.

                                                           
2013 02 15T072153Z 3 CBRE91E0JX000 RTROPTP 2 CNEWS US RUSSIA METEORITE
2013 02 15T072153Z 3 CBRE91E0JX000 RTROPTP 2 CNEWS US RUSSIA METEORITE

news.yahoo.com/possible-meteor-shower-reported-eastern-russia-052833588.html  :icon_study:
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Offline Golden Oxen

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Painting asteroids could nudge them away from Earth
« Reply #8 on: February 23, 2013, 07:05:47 AM »
There sure are some pretty smart and creative people out there.  ::)

 The dramatic space rock events of last week highlighted the need in many people's minds for a viable asteroid-deflection strategy, and one scientist thinks he has a good candidate ó paint.

On Friday (Feb. 15), the 130-foot (40 meters) asteroid 2012 DA14 gave Earth a historically close shave, missing the planet by just 17,200 miles (27,000 kilometers). Hours earlier, a 55-foot (17 m) object exploded over the Russian city of Chelyabinsk, damaging thousands of buildings and injuring 1,200 people.

The asteroid encounters served as a reminder that Earth sits in the middle of a cosmic shooting gallery, scientists say, and that destructive impacts are inevitable in the future unless humanity takes action.

One form of action could involve dusting a threatening asteroid with a thin coat of paint. The paint would change the amount of sunlight reflected by the space rock, potentially nudging it away from Earth through the accumulated push provided by many thermal photons as they radiate from the asteroid's surface. (This force is called the Yarkovsky effect, after the Russian engineer who first described it around the turn of the 20th century.) [Photos: Asteroids in Deep Space]

The scheme would use powdered paint, which the sun's rays would then cure into a smooth coating. The paint would probably have to be applied long before any potential impact ó years or decades, perhaps ó to give the Yarkovsky effect enough time to make a difference.

"I have to admit the concept does sound strange, but the odds are very high that such a plan would be successful and would be relatively inexpensive," Dave Hyland, of Texas A&M University, said in a statement. "The science behind the theory is sound. We need to test it in space."

NASA is interested in Hyland's idea and has approached the researcher to discuss developing such a space test, Texas A&M officials said

http://rss.csmonitor.com/~r/feeds/csm/~3/WivFPKMOAmI/Painting-asteroids-could-nudge-them-away-from-Earth   :icon_study:
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Offline Golden Oxen

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Asteroid 1998 QE2 flies past Earth
« Reply #9 on: June 01, 2013, 02:42:06 AM »
Asteroid 1998 QE2 flies past Earth
By Rebecca Morelle Science reporter, BBC World Service

An asteroid that measures nearly 2.7km (1.7 miles) across has flown past the Earth.

The space rock, which is called 1998 QE2, is so large that it is orbited by its own moon.


It made its closest approach to our planet at 20:59 GMT (21:59 BST), but scientists had said there would be no chance it would hit.

Instead it kept a safe distance - at closest, about 5,800,000 km (3,600,000 miles).

That is about 200 times more distant than the asteroid "near-miss" that occurred in February - but Friday's passing space rock is more than 50,000 times larger.

Prof Alan Fitzsimmons, an astronomer at Queen's University Belfast, said: "It's a big one. And there are very few of these objects known - there are probably only about 600 or so of this size or larger in near-Earth space.

"And importantly, if something this size did hit us one day in the future, it is extremely likely it would cause global environmental devastation, so it is important to try and understand these objects."
Dark visitor

This fly-by gave astronomers the chance to study the rocky mass in detail.

Using radar telescopes, they were due to record a series of high-resolution images.

They want to find out what it is made of, and exactly where in the Solar System it came from.

Prof Fitzsimmons said: "We already know from the radar measurements, coupled with its brightness, that it appears to be a relatively dark asteroid - that it's come from the outer part of the asteroid belt."

Early analysis has already revealed that the asteroid has its own moon: it is being orbited by another smaller piece of rock that is about 600m (2000ft) across.

About 15% of asteroids that are large are "binary" systems like this.

This celestial event was not visible to the naked eye, but space enthusiasts with even a modest telescope might be able to witness the pass.

After this, asteroid 1998 QE2 will hurtle back out into deep space; Friday's visit will be its closest approach for at least two centuries.

Researchers are becoming increasingly interested in potential hazards in space.

So far they have counted more than 9,000 near-Earth asteroids, and they spot another 800 new space rocks on average each year.
http://www.bbc.co.uk/news/science-environment-22736709#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa  :icon_study:
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Offline azozeo

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Latest Asteroid to Strike Earth
« Reply #10 on: September 08, 2014, 11:51:31 AM »
<a href="http://www.youtube.com/v/g3Tz6P7UOLE&amp;list=UUxz5R9YQMRW5QqElbAlMqRw#&fs=1" target="_blank" class="new_win">http://www.youtube.com/v/g3Tz6P7UOLE&amp;list=UUxz5R9YQMRW5QqElbAlMqRw#&fs=1</a>
I know exactly what you mean. Let me tell you why youíre here. Youíre here because you know something. What you know you canít explain, but you feel it. Youíve felt it your entire life, that thereís something wrong with the world.
You donít know what it is but its there, like a splinter in your mind

Offline azozeo

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Re: Latest Asteroid to Strike Earth
« Reply #11 on: September 08, 2014, 11:53:30 AM »
<a href="http://www.youtube.com/v/oll8TKuU0Cg&amp;list=UUpPGJXgbwBmkIp291W0PCMw#&fs=1" target="_blank" class="new_win">http://www.youtube.com/v/oll8TKuU0Cg&amp;list=UUpPGJXgbwBmkIp291W0PCMw#&fs=1</a>
I know exactly what you mean. Let me tell you why youíre here. Youíre here because you know something. What you know you canít explain, but you feel it. Youíve felt it your entire life, that thereís something wrong with the world.
You donít know what it is but its there, like a splinter in your mind

Offline azozeo

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Re: Latest Asteroid to Strike Earth
« Reply #12 on: September 08, 2014, 12:07:28 PM »
<a href="http://www.youtube.com/v/dX3V1-0UXdo#&fs=1" target="_blank" class="new_win">http://www.youtube.com/v/dX3V1-0UXdo#&fs=1</a>
I know exactly what you mean. Let me tell you why youíre here. Youíre here because you know something. What you know you canít explain, but you feel it. Youíve felt it your entire life, that thereís something wrong with the world.
You donít know what it is but its there, like a splinter in your mind

Offline MKing

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Re: Latest Asteroid to Strike Earth
« Reply #13 on: September 08, 2014, 03:21:31 PM »
NOW you found something COOL to worry about Azozeo!

The CME disasters that no one can see doesn't have near the pizzazz of problems that have already altered the planets climate and history, and done in those poor lizards.
Sometimes one creates a dynamic impression by saying something, and sometimes one creates as significant an impression by remaining silent.
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Offline azozeo

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Re: Latest Asteroid to Strike Earth
« Reply #14 on: September 08, 2014, 06:30:19 PM »
Nothing cooler than when a BIG ASS space rock dings the planet
I know exactly what you mean. Let me tell you why youíre here. Youíre here because you know something. What you know you canít explain, but you feel it. Youíve felt it your entire life, that thereís something wrong with the world.
You donít know what it is but its there, like a splinter in your mind

 

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