Curious crash in California

[QUOTE=Bruggen 130;1639843]

Now it would be foolish for me to argue with the likes of Carl Sagen! 😀 But…

…taking the ‘first few hundred million years’ of Earth’s history as 1000,000,000 years then 3,000,000,000,000,000 tons of comets (water) is going to be arriving at a rate of 3,000,000 tons a year!

Wasn’t the Tunguska explosion in Siberia in 1908 that flattened 2000 square kilometres of forest supposed to be a comet (estimated as ‘a few tens of metres’ across)? So, I’m sure we’d notice 3,000,000 tons of comets arriving every year! :diablo:

So when did that all stop? :confused:

Obviously the rate of comet impact must have slowed, so that begs the question why?

It all stopped a few billion years ago , but when the solar system was forming
5 billion years ago our little part of the universe was a very violent place.

the russian explosion you mention is now being reccognised as an arial explosion rather than an impact the reason why the devastation spread so far !!

[QUOTE=Creaking Door;1639732]Now it would be foolish for me to argue with the likes of Carl Sagen! 😀 But…

…taking the ‘first few hundred million years’ of Earth’s history as 1000,000,000 years then 3,000,000,000,000,000 tons of comets (water) is going to be arriving at a rate of 3,000,000 tons a year!

Wasn’t the Tunguska explosion in Siberia in 1908 that flattened 2000 square kilometres of forest supposed to be a comet (estimated as ‘a few tens of metres’ across)? So, I’m sure we’d notice 3,000,000 tons of comets arriving every year! :diablo:

So when did that all stop? :confused:

Obviously the rate of comet impact must have slowed, so that begs the question why?

It all stopped a few billion years ago , but when the solar system was forming
5 billion years ago our little part of the universe was a very violent place.

can’t it will be too tricky to make it stay put whilst measuring it !!:D

…think that all that water if demonstrated in size…

First one to post the diameter of a sphere of 3,000,000,000,000,000 tonnes of water? :rolleyes:

Now it would be foolish for me to argue with the likes of Carl Sagen! 😀 But…

…taking the ‘first few hundred million years’ of Earth’s history as 1000,000,000 years then 3,000,000,000,000,000 tons of comets (water) is going to be arriving at a rate of 3,000,000 tons a year!

Wasn’t the Tunguska explosion in Siberia in 1908 that flattened 2000 square kilometres of forest supposed to be a comet (estimated as ‘a few tens of metres’ across)? So, I’m sure we’d notice 3,000,000 tons of comets arriving every year! :diablo:

🙂

it is odd to think that all that water if demonstrated in size comparisons

the total volume of all the earths water grouped together

would be close to the equivalent of a small marble on a tennis ball !!

so although there are deep areas seas in general must be reasonably shallow in relation to distance travelled !!

…the scientific world seems to think thats where all the water came from…

Now it would be foolish for me to argue with the likes of Carl Sagen! 😀 But…

…taking the ‘first few hundred million years’ of Earth’s history as 1000,000,000 years then 3,000,000,000,000,000 tons of comets (water) is going to be arriving at a rate of 3,000,000 tons a year!

Wasn’t the Tunguska explosion in Siberia in 1908 that flattened 2000 square kilometres of forest supposed to be a comet (estimated as ‘a few tens of metres’ across)? So, I’m sure we’d notice 3,000,000 tons of comets arriving every year! :diablo:

So when did that all stop? :confused:

Obviously the rate of comet impact must have slowed, so that begs the question why?

I’ve always been under the impression that comets were things that wandered through space until they came close enough to a sun to be ‘captured’ by its gravity and go into the orbits typical of comets; long periods far away and brief periods close. So why has the rate slowed?

I’m guessing that it’s because comets originate from within our solar system so (if life did arrive on a comet) we’re not really from as far ‘out there’ as we may think. 🙂

it may be an exageration braught about by an ad campaign on uk tv

but this sheds some light on the extreemes life starting can be found at

and a possibility that it may have been here without importing it

[A PUBLISHED CORRECTION HAS BEEN ADDED TO THIS STORY.]A newly discovered microscopic creature from the deep sea can survive in heat of up to 266 degrees Fahrenheit, a new record for life on earth, University of Massachusetts researchers reported yesterday.

The one-celled organism not only lived but grew successfully at 121 degrees centigrade, the temperature inside doctors’ sterilization equipment, long believed to be hot enough to kill any life form.

“This is like breaking the 4-minute mile – it’s a real benchmark,” said Matthew Kane, who oversaw the National Science Foundation grant that funded the research.

The iron-breathing microbe, named Strain 121 for its ability to thrive at the temperature of a medical autoclave, joins a growing menagerie of “extremophiles,” exotic creatures that thrive in what to humans are extremes of heat and cold. It was collected in the Pacific Ocean 200 miles off Puget Sound, where vents from deep in the earth unleash tremendous heat into the cold ocean.

The discovery of Strain 121 does not imply that sterilization for canned foods or medical instruments must be raised to higher temperatures, however. At room or body temperature, “it doesn’t die but it can’t do anything because it’s just too cold,” said Derek Lovley, head of the Department of Microbiology at the University of Massachusetts at Amherst and coauthor of the paper reporting the discovery in today’s issue of the journal Science.

Lovley said the existence of Strain 121 “expands the window of conditions under which we might be able to find life.”

That means there may be organisms living far deeper beneath the earth’s surface than previously thought, as they could survive the higher temperatures nearer the planet’s core.

Strain 121 may also have implications for theories of the evolution of life on earth because something like it could have thrived when the planet was younger and much hotter. Its iron breathing could have been “the first form of microbial respiration as life evolved on a hot, early Earth,” the Science paper posits.

The heat-loving organism could also eventually yield some practical uses; such exotic microbes offer the prospect of improving industrial processing of paper or medications, and even cleaning hot contaminants, scientists say.

Researchers say they may well find more extreme creatures in the future. “Will 121 be the upper limit of life?” asked Dr. Craig Cary, an expert on high-temperature extremo philes at the University of Delaware. “I don’t believe it will be. I believe more people like Derek and my colleagues will continue to look and continue to find them, but it’s going to be harder and harder.”

The hard part for Dr. Lovley and his coauthor, Kazem Kashefi, was getting Strain 121 to survive and grow.

“It takes an enormous amount of time and an incredible amount of talent and perseverance to develop and understanding of what this organism needs to grow,” Dr. Cary said. “These guys have been on the planet for over 3 billion years, so they’ve had a lot of time to figure it out.”

Strain 121 is only about one micron (one millionth of a meter) across and looks something like a balloon with a dozen whipping strings. It belongs to an ancient branch of life known as Archaea, which are similar to bacteria and often live in seemingly inhospitable environments.

Lovley said his lab plans to name the creature after it completes and publishes a fuller study.

Though he and his colleagues are highly familiar with the weird world of extremophiles, Lovley said that “the emotion we had when we found out it grew in the autoclave was amazement.”

“You’re taught from day one in biology that the temperature of an autoclave will kill any life,” he said, “and we put it in there and brought it out 10 hours later, and it’s still alive.”

Carey Goldberg can be contacted at [email]goldberg@globe.com[/email]

SIDEBAR: DISCOVERY FROM THE DEEP PLEASE REFER TO MICROFILM FOR CHART DATA. [CORRECTION – DATE: Sunday, August 17, 2003: * Correction: Because of a graphic artist’s error, some temperatures were incorrect in a graphic in Friday’s City & Region section about the discovery of an organism that can live at extreme temperatures. According to The Sizesaurus, the melting point of gold is 1,945 degrees Fahrenheit, molten lava is 3,150 degrees, and the surface of the sun is 10,340 degrees.)

not necesarily the case they are now proving that some bacterias can survive in molten lava!

I know that life can survive in thermal vents and volcanic hot springs, but molten rock is news to me.

All the water on Earth from comets? Given that Hydrogen is the single most common substance in the universe, is highly reactive and the result of this reaction is usually water isn’t it more likely that this is where the vast majority of water on Earth comes from?

No sorry but the scientific world seems to think thats where all the water came from,[QUOTE] “Over the first few hundred million years of Earths history they (comets) would have deposited (3,000,000,000,000,000,) tons of water. just possibly most of the water in the oceans arrived via a cometary delivery service after the Earth was fully formed. Certainly, comets would not have been the only source water. Molten lava arriving at the Earths surface from the interior is known to carry with it a few percent of water, and volcanic events were frequent billions of years ago.[QUOTE] Comet by Carl Sagen. this is just one of the many books that state the same thing
So I should have said most instead of all, Sorry.

you need liquid water for life:D

not necesarily the case they are now proving that some bacterias can survive in molten lava !!!

just life as we know it can’t !!

and there’s the key , to our knowledge !! not necesarily the truth elsewhere if there is life out there

i think there is but travell between us will remain impossible !!

Is this what the first link is talking about? (though the dates don’t match…)
I hate to disiillusion the “I want to believe croud” but it was a Boeing UAV. It was listed in the daily FAA accident database the following day. It has since been removed because it didn’t have an N-number.

The crash was reported in Aviation Week and Flight International as well.

http://www.flightglobal.com/articles/2010/07/30/345616/boeing-unmanned-a160t-crashes-at-california-airport.html

In short, they’re nuts if they think the military has the time, people, or inclination to seal off the crash sites of imaginary UFOs….and keep it from the media. Besides, Obama promised us an open government. I’m sure he wouldn’t lie.

Are you talking about the same thing here? Victorville and Fresno are a good 4 hrs drive apart.

T J

That is exactly what a great number of physicists think how life came to earth, all the water on earth came here on comets…

All the water on Earth from comets? Given that Hydrogen is the single most common substance in the universe, is highly reactive and the result of this reaction is usually water isn’t it more likely that this is where the vast majority of water on Earth comes from?

As for life it just seems to me a bit of a harsh environment for life to get started, however it may fit in with some people’s ideas that ‘we’ have to be from ‘out there’!

I could be wrong and I’m just stating my views. 🙂

I offer no scientific support for my views they are my own personal feelings, accept or reject as you wish, but please don’t flame me, typing this for public view was hard enough. Curious about all manner of flying machines I couldn’t at first accept the volume and frequency of UFO sightings as being of extraterrestrial origin.

I’d be very happy to have a sensible, constructive discussion about ‘UFO sightings’. I don’t have all the answers (who does) and I make no apologies for the fact that I’m extremely sceptical about most ‘sightings’ but hopefully I can apply simple logic and reason to some of the circumstances surrounding them and maybe offer some alternatives.

I’m certain given the size of the universe that life does exist on other planets but (as I suggested in an earlier post) just because non-terrestrial life almost certainly exists and there are unexplained events on (or above) the Earth it doesn’t mean that the two are connected! 🙂

Life came to earth on a comet?

…or on a block of rock and ice that spends billions of years floating through space at near absolute zero until it finally blunders into a solar system and plummets into a planet and explodes with the heat of thousands of nuclear weapons? 😀

That is exactly what a great number of physicists think how life came to earth, all the water on earth came here on comets and you need liquid water for life:D

Please don’t flame me.

I have been an aviation enthusiasts since 1961. I offer no scientific support
for my views they are my own personal feelings, accept or reject as you wish, but please don’t flame me, typing this for public view was hard enough.
Curious about all manner of flying machines I couldn’t at first accept the
volume and frequency of UFO sightings as being of extraterrestrial origin. If
“they” had the technology to travel the vast distances involved, surely logic
would suggest their recon abilities and sensors would not require that frequency of mission. Then I began to read more and more books. I began to consider the possibility that perhaps the UFOs were powered by gravity and guided by magnetism, or vice versa ( I am still unsure which). Maybe the ones we see have slipped through transient anomalies in the earth’s magnetic or gravitational field and are trapped in our part of the earth’s spectrum, coming as I believe from a parallel existence. Too many people with too much to lose, ATC, airline pilots, radar operators, astronauts, military personnel for example have come forward, for these reports to be attention seeking. I believe that governmental and military interest started with a simple desire to help them find a way back,and to possibly trace and return others who may have strayed the other way (this I consider less likely to happen as we have yet to harness magnetic and gravitational forces in this way) but has since been overcome by a desire to obtain technological advances. Once the early decision to keep contact secret had been made it became impossible to rescind that decision, and so it goes on, we can’t tell the public because we never have told them.
I don’t have answers just thoughts and a whole pile of questions.
I have only one UFO related experience, in the early 1980s I worked at
Manchester Airport and struck up a friendship with an ATC area sub centre
supervisor, when we were both on nights I would visit him in the control tower usually between 3 and 4 am to share a chat and coffee sometimes he would activate a training terminal and provide me with a headset explaining what we were seeing on screen, occasionally telephoning military controllers ( Eastern Radar) to identify targets, one night a return was noticed out over the north sea near to the Doggar Bank reporting point heading west at great speed, he got his dividers out and calculated its speed as in the region of 8,000mph. What it was we know not.
It left our view near to the Isle of Man still heading west, could it have been
a meteorite ? I asked. Most unlikely he had seen many of these and because of their angle of decent they only paint at most twice or three times before they burn up or strike earth.
Your comments and observations appreciated, please bear in mind I have never stated these views in the open before just to one or two close friends.
Be lucky

Life came to earth on a comet?

As an example of this where would you think that life would be likely to originate, on a planet with plenty of water and a relatively constant temperature orbiting a sun for billions of years…

remember !! the earth had to start somewhere your point above was far and away the case from the beggining

at some point life had to enter the equation and a commet is just as pheasible as any other source

it is a unsolved mystery and things we have to remember are even scientists proove themselves wrong

point being the recent discovery (after saying our sun was the largest !! ) of a sun about a hundred times larger

never mind ehh !! it was probably hid behind something !!

Right now we can only surmise the existence of life beyond our planet using probabilty. My university textbook on astronomy postulated the existence of extraterrestrial life as being quite probable and when I am re-acquainted with my book (I’m far away from home right now), I will share the information.

Life came to earth on a comet?

Now I know that that was probably a throwaway comment but I’m becoming increasingly concerned with the sort of ‘conspiracy mathematics’ that the average internet user is willing to accept…

…you know, the sort where two-plus-two equals about nine hundred! :rolleyes:

As an example of this where would you think that life would be likely to originate, on a planet with plenty of water and a relatively constant temperature orbiting a sun for billions of years…

…or on a block of rock and ice that spends billions of years floating through space at near absolute zero until it finally blunders into a solar system and plummets into a planet and explodes with the heat of thousands of nuclear weapons? 😀

We all came from outer space, on a Comet (Lumpy icey kind, not one of Geoffrey De Havilland’s)
We are all aliens, we started off as a Tardigrade. Some still look the same.

Fresno…

I wonder if anyone ever tried to explain the existence of California to a Martian, would he/she/it remain a skeptic or become a firm believer?:confused: