but represents a point in space instead of on a two-dimensional screen.)Group a million or so voxels together
Watching the video it reminded me of the old Test Driving video game on the PC a long time ago. lol---In space no one can hear a tree fall in the forest.
and take the parking space. After all you can't be rude to a machine can you?
I need to type it the iphone is not liveblog-friendly 4/5 stars 12:39 I messe up the closing HTML tags again12:
since satellites began tracking the storms in 1967 he notes in an e-mail. We're also at a 10-year low in tornado activity.
I will trust the NOAA NASA every national science organization on the planet and every institute of higher learning on the planet for info.
and need to own up to the damage we are causing the planet and the consequences we are leaving to future generations (much more than just climate change)..
Danish studycopenhagen (AFP)--The earth's climate has been affected significantly by the planet's magnetic field according to a Danish study published Monday that could challenge the notion that human emissions are responsible for global warming.
Scientists say that cosmic rays from outer space play a far greater role in changing the Earth's climate than global warming experts previously thought.
In a book to be published this week they claim that fluctuations in the number of cosmic rays hitting the atmosphere directly alter the amount of cloud covering the planet.
High levels of cloud cover blankets the Earth and reflects radiated heat from the Sun back out into space causing the planet to cool.
Henrik Svensmark a weather scientist at the Danish National Space Centre who led the team behind the research believes that the planet is experiencing a natural period of low cloud cover due to fewer cosmic rays entering the atmosphere.
and indeed there's evidence to suggest the planet may be in the early stages of a pole reversal right now.
According to John Tarduno professor of geophysics at the University of Rochester a strong magnetic field helps protect Earth from blasts of radiation from the sun. Coronal mass ejections (CMES) occasionally occur on the Sun
Even now solar storms can damage satellites cause power outages and interrupt radio communications. These kinds of negative influences clearly will increase
or other planet-wide disasters occurred as geoscientists can testify to from fossil and other records said Alan Thompson head of geomagnetism at The british Geological Survey.
http://www. mnn. com/earth-matters/space/stories/should-we-be worried-about-earths-magnetic-poles-reversing...
The planet's magnetic field is showing signs of wanting to make a gigantic somersault so that magnetic north heads towards Antarctica
and protects us from the sun's charged particles and cosmic rays by focusing them towards the poles.
There is a growing body of evidence that the sun's highly charged particles batter the upper atmosphere so hard that some of the assault filters down into the atmosphere around us influencing the wind atmospheric pressure and temperature.
The field is weakening with consequences of irradiation from the sun and deep space. But the reversal also means deep seated changes inside the earth with consequences of earthquakes in places not familiar with them and new volcanoes.
or just changes in the atmospheric environment. 1.)The sun cycles. 2.)The recent contribution by humans and the industrial revolution with the production of pollution of material and gases-CO2 and more. 3.)The extreme rare
I will trust the NOAA NASA every national science organization on the planet and every institute of higher learning on the planet for info.
the Sun flips it's pole every 11 years. It's about to happen now.
while the Suns is flipping and ours in flux ours could also change more rapidly than naturally occurs to match the Suns!
A small chance but possible. Let's hope! It is actually proven that the last field reversal happened in less than 200 years in a rapid flip that then reversed itself.
the Suns own dipole reversal becomes a major culprit! Some interesting Sun/Earth timing coincidences in the last flip. http://www. livescience. com/31795-earth-magnetic-field-reversal. htmldo not try
and bend the spoon. That is impossible. Only try and realize the truth-there is no spoon. lnwolf41
It might be cheaper and safer to launch these chemicals into outer space. If the containers were designed to leak slowly the poisons may dissipate enough to become harmless.
If they were launched to collide with the surface of the sun I would imagine that the vaporization would leave NO trace of the poisons or their delivery systems!
The wisdom in human selection is the greatest risk factor here. tmarti69 As the Earth is currently in the beginnings of a magnetic polar flip with a ongoing to zero reduction of magnetic field more wild life will be subject to the the sun comsic radays
if those people and that pond were on the moon. Reference: Humans Running In place on Water at Simulated Reduced Gravity Alberto E. Minetti Yuri P. Ivanenko Germana Cappellini Nadia Dominici Francesco Lacquaniti PLOS ONE
or POPSCI does not realize how many idiots there are on this planet. rainbowmakernot a joke cow tipping is an urban myth.
âÂ#Âoethe most incomprehensible thing about the universe is that it is comprehensibleã¢Â#Â-Albert Einsince this is a science blog There is no such thing as'sear the juices in'.
In other words the planet needs to rethink how it gets its meat. Brown is addressing the issue by supplying a near-perfect meat analogue
---In space no one can hear a tree fall in the forest t
#Follow A Queen bee On Her Maiden Mating Flightqueen honeybees mate just once in their lives within weeks of emerging as an adult from the little honeycomb cells in
and exposure to the sun so infants taking 1000 units'worth of Vitamin d supplements a day could easily exceed their daily limits.
I will stick to trusting every science organization on the planet that claim they have a handle on
if it was put in front of you nor do you probably buy into UFO's government conspiracy or Santa Clause.
To help you get the most out of your fair we asked for tips from judges and finalists from two national science competitions for middle schoolers Broadcom MASTERS (Math Applied science Technology and Engineering for Rising Stars
A graft within the space of the forest Echoviren is a space for contemplation of the landscape of the natural and our relationship with these constructs.
That is why lions (and every other carnivore on the planet) do just fine. You are what you eat and
however as worms tend to be an issue (as they are for most animal species including humans over most of the planet).
which our planet can replenish and have produced more waste than can be reabsorbed according to the Global Footprint Network a think tank based in the U s. Switzerland and Belgium.
Clearly we are not consuming the entire output of the planet-we are consuming previous output that has been stored (in the form of fossil fuels.
and increasing the output of the planet (in the same way that taking money from the bank
what we do to this planet when reach such large numbers. We deforest for everything from toilet paper to wood for infrastructure and
Maybe they guide a meteor into a major population without anyone knowing? Not a planet killer mind you maybe just a few small ones that are big enough to take a few billion.
I hate to think in these extremes but why must inflate our population to such a large number?
I do think a large majority of the 8. 3 Billion on this planet are in that category.
and their needs and not giving a shit about this planet. What wake up call will need we?@
Despite the fact that white dwarfs are fairly common throughout the universe the nearest is 8. 6 light-years away.
and that the radiation and heat emanating from the star didn't kill you on your approach.
White dwarfs are extremely dense stars and their surface gravity is about 100000 times as strong as Earth's. You'd have to get your sample
which would be very hard to carve out without falling onto the star and getting flattened into a plasma Hammergren says.
But if you're desperate for a taste of star you don't need really to travel 8. 6 light-years your fridge is full of the stuff.
and everything around us were formed in the cores of stars and then belched out into the universe over billions of years.
Basically everything you eat was once part of a star. Might we recommend some star fruit? This article originally appeared in the November 2009 issue of Popular Science magazine. yall are ignorant. a white dwarf star could not be eat better yet held in a spoon. come back to
me with a better question. and also it weight tons. What is more racist a white dwarf or a brown dwarf?
What if you're spoon is made of neutron star? then that would be an awsome spoon and
Of course the appropriate labelling would need to be applied to the star first. Conncentrate on real scientific articles that could actually affect us.
I'm not a geek) could have been a certain metal that reacted with neutron star to create the very dense metal you now have (god thats a mouthful) just hypothesizing that any of that was real of course (BTW that was very imaginative).
A nice hydrogen nebula salad would go down a lot better. Facts do not cease to exist
what is a dwarf star compared to a black hole? Please answer. Astounded 11/14/09 at 9: 26 amreally?
Of course the appropriate labelling would need to be applied to the star first. Conncentrate on real scientific articles that could actually affect us.
If drilling to the center of the Earth were as easy is putting 5 tons in the space of the area of a teaspoon...
Cycles of the Sun effects global weather the sun NOW is in a current stage of polar shift.
The climate of the planet is changing and due to man made influences but it is chemtrails the program of doping the earth's atmosphere with weather control chemicals from high flying jets not fossil fuels that caused it.
and climate ask a meteorologist not a climate scientist. 4. Satellite pictures show that the increasing CO2 saturation
Starz Your concern seems to be with the way the magnetic field in space affects that of the core
Since these fields are much more intense than anything created by electric currents in space (certainly in the core but even on the surface)
âÂ# The sun provides the energy that warms the earth. And yet according to the NOAA National Climatic Data center http://www. ncdc. noaa. gov/oa/climate/globalwarming. html âÂ#Âoeour understanding of the indirect effects of changes
Although the sun exhibits varies types of energy related events (sunspots solar flares coronal mass ejections) sunspots have been observed
which are included not in the modelsã¢Â# A study done by an Assistant professor of Earth sciences at Dartmouth University http://www. sciencedaily. com/releases/2002/06/020607073439. htm looked at the cycles of the sun s magnetic
âÂ#Âoethe sun's magnetic activity is varying in 100000-year cycles a much longer time span than previously thought
when the sun is magnetically more active the earth experiences a warmer climate and vice versa when the sun is magnetically less active there is a glacial period.
Right now the earth is in an interglacial period (in between ice ages) that began about 11000 years ago
magnetic field generated deep within the planet is a shield against particle radiation from space. In the South Atlantic this shield is much weaker than elsewhere across the globe
and the radiation in the SAA is known a hazard to satellites spacecraft and high-altitude aircraft.
COPENHAGEN (AFP)--The earth's climate has been affected significantly by the planet's magnetic field according to a Danish study published Monday that could challenge the notion that human emissions are responsible for global warming.
Scientists say that cosmic rays from outer space play a far greater role in changing the Earth's climate than global warming experts previously thought.
In a book to be published this week they claim that fluctuations in the number of cosmic rays hitting the atmosphere directly alter the amount of cloud covering the planet...
of evidence that water once flowed on Mars-the most Earthlike planet in the solar system-should intensify interest in
The only thing stopping Earth having a lifeless environment like Mars is the magnetic field that shields us from deadly solar radiation
The loss of the magnetic field on Mars billions of years ago put paid to life on the planet
Mac Niocaill said Mars probably lost its magnetic field 3. 5-4 0 billion years ago based on observations that rocks in the planet's southern hemisphere have magnetisation.
The northern half of Mars looks younger because it has fewer impact craters and has no magnetic structure to speak of
or forcing it to migrate into the interior of the planet. RIGHT HERE RIGHT NOWEARTH's magnetic field has restored always itself
and weaken it will present challenges-satellites could be exposed more to solar wind and the oil industry uses readings from the field to guide drills.
because studies have shown they have backup systems that rely on stars and landmarks including roads and power lines to find their way around.
In November it plans to launch three satellites to improve our fairly blurry understanding of the magnetosphere.
The project-Swarm-will send two satellites into a 450 kilometre high polar orbit to measure changes in the magnetic field
while a third satellite 530 kilometres high will look at the influence of the sun. DESCENT INTO CHAOSSCIENTISTS who have known for some time the magnetic field has a tendency to flip have made advances in recent years in understanding why
The field is generated by convection currents that churn in the molten iron of the planet's outer core.
and scrolls through sonar images produced by the Remus. Grainy and reddish the sonar images look like transmissions from Mars. Some show deep scours;
Originally painted blue with a white star -and-bar symbol the aircraft has been scoured to bare aluminum.
and land and require the deforestation of huge swathes of the planet. A 2009 study estimated that factory livestock is responsible for 50 percent of the world's man-made greenhouse gases.
and don't take up much space. At the Future Food Salon I was shown a mockup of an in-house cricket enclosure designed to be placed on your counter next to your microwave
It's like worrying that we might be hit by an asteroid. While there's certainly a complex story to be told on the subject of GMOS Elle seems to have passed right by it into conspiracy theory territory.
But those rocks are just proof that dirt existed on the planet way back then.
About two million years ago the planet underwent two major changes that drove the formation of new dirt.
which then condensed to form the stars and later on planets. If you think about it he says dirt
and its origin are older than the stars. This article originally appeared in the January 2010 issue of Popular Science magazine Most dirt is actually earth worm dung.
and mineral so it technically can be as old as the stars given that it could be compressed into rock
What event changes material in some explainable way where today we are measuring it as part of the 11 billion year old universe we light a spark
@Green Star What kind of farmers have you been hanging out with? I've been in farming my entire life
when a star exploded and made the elements. But that doesn't mean that you car is 10 billion years old. extremechiton 12/19/09 at 7: 51 pmif the earth were to instantly stop spinning
The angular speed of Earth's rotation in inertial space is (7. 2921150 Ã0. 0000001) à Â0ã¢Â  radians per SI second (mean solar second.
12 Multiplying by (180ãã Â#radians) Ã Â86400 seconds/mean solar day) yields 360. 9856ãmean solar day indicating that Earth rotates more than 360ãrelative to the fixed stars in one solar day.
Earth's movement along its nearly circular orbit while it is rotating once around its axis requires that Earth rotate slightly more than once relative to the fixed stars before the Mean sun can pass overhead again
However the use of only one circumference unwittingly implies only one rotation in inertial space so the corresponding time unit must be a sidereal hour.
This is confirmed by multiplying by the number of sidereal days in one mean solar day 1. 002 737 909 350 795 12
The sad part is that out of the some 11000 operational nukes around the world a small fraction of those bombs is all that would be needed to throw the entire planet into nuclear winter.
Unlike the Sun whos neutrinos are coming from a source that is very far away a neutrino beam that originated On earth could easily produce billions+/sq inch. of Neutrinos that could Easily make this a reality.
Perhaps satellites that could simply concentrate solar neutrinos via grazing incidence would be a more viable source of neutrinos than man-made ones.
but we find that majority of humans on this planet all want the same things.
This technology might be okay for a Mars colony or a deep space voyage. Let's see:
the Roman Colosseum and aqueducts the Great Walls of China which I have on good account can be seen from space (one of a few really) Stonehenge the Hagia Sophia Petra Taj Mahal the Panama canal Machu Picchu
The Great wall of china cannot be seen from space (confirmed by astronauts orbiting the earth at just 217 miles up)
At least NASA acknowledges that specific conditions have to take place like the angle for viewing the sun's position your altitude
so by telling a story he made up called How the Asteroid Saved Mankind in three different formats:
The story is counterintuitive (people tend to fear asteroids) and feels exaggerated like the tortoise and the hare but plays on people's positive conceptions of space exploration:
It will tout asteroids as our salvation. In the future (so the beta-version of the story goes) asteroid mining will be inexpensive
and will provide enough resources to build space-based solar arrays which will then give us enough energy to actively sequester carbon dioxide removing it from the atmosphere faster than we added it Gayle says.
Ideally creating a positive narrative alters how people view these complex problems. Now he's seeking $8000 through the Rockethub-Popular Science#Crowdgrant Challenge.
if we desire a healthy planet. As a retired Department of Environmental Quality Employee and an owner of timber land this is a stupid article on environmentalism gone crazy in past history.
Perhaps we can as I said save what's left of the natural earth by exploiting space for resources maybe build colonies on the moon
and mars but all that isn't going to happen for quite some time. So either we use
Then in 2006 Anderson began conducting research with Venus a cabled ocean observatory that broadcasts underwater views of offshore British columbia live over the Internet.
The basic law of the universe is EVERYTHING EFFECTS EVERYTHING. Therefore if popsci talked negative of vaccines they would lose big pharma funding.
#If The Sun Went Out, How long Could Life On earth Survive? If you put a steamy cup of coffee in the refrigerator it wouldn't immediately turn cold.
Likewise if the sun simply turned off (which is actually physically impossible) the Earth would stay warm at least compared with the space surrounding it for a few million years.
But we surface dwellers would feel the chill much sooner than that. Within a week the average global surface temperature would drop below 0°F. In a year it would dip to âÂ#Â00°.
Millions of years after that our planet would reach a stable âÂ#Â00°the temperature at which the heat radiating from the planet's core would equal the heat that the Earth radiates into space explains David Stevenson a professor of planetary science at the California Institute of technology.
Although some microorganisms living in the Earth's crust would survive the majority of life would enjoy only a brief post-sun existence.
Of course the sun doesn't merely heat the Earth; it also keeps the planet in orbit.
If its mass suddenly disappeared (this is equally impossible by the way) the planet would fly off like a ball swung on a string
and suddenly let go. This article originally appeared in the November 2008 issue of Popular Science magazine.
If the sun were to disappear as in*poof*-It's gone. It would take 8 minutes for the earth to go dark
Hopefully we'll rocket past the moon rather than into it. GPS would immediately stop working
and at least 12 of those satellites would come crashing to Earth. In fact every space satellite in our new trajectory would immediately come crashing down to Earth the satellites on the far side of earth would be left behind trailing in Earth's gravity.
Earthquakes would start moments later due to the sudden gravitational shift Some of our atmosphere will be lost
No worries as most that atmosphere protected us from a sun that is no longer shining or at least will stop shining within 7 minutes 30 seconds...
because the oceans tides are managed no longer by the gravitational pull of the Moon. There will also likely be massive tsunami's as a result of the earthquakes.
Women and Minorities Hardest Hitif the suddenly the sun went out'poof'as this article suggest that thing which causes this event would surely have an effect at the same time On earth
since we do reside within the atomosphere distance of the Sun and that same thing
of which'great power causes the sun to go poof'surely would destroy the Earth as well. By the way the sun has a hot riotous atmosphere called the corona that reaches from the sun's surface past Earth all the way to Pluto and beyond.
The corona is seen seldom only during a total eclipse but it is there. To be more accurate the Earth wouldn't immediately fly out
if the sun lost its mass instantly; it would continue to orbit its current trajectory for about 8 minutes as not even the effects of gravity move faster than light.
I don't see why our moon or satellites would suddenly stop being caught in our gravity well...
our speed wouldn't change or change much just our trajectory through space. Immediate death is not in the sun's future
since it is a star. Currently scientists have deduced that our sun is 4. 5 billion years old
and is about at its midlife. Like all stars as the hydrogen fuel in the core is used up the outer parts of the Sun will begin to expand.
The Sun will turn from a yellow dwarf then into a red giant. By the time it is 10 billion years old it will have transitioned into a red giant
and its atmosphere will stretch out to near where the Earth is located and will almost engulf it in its orbit.
The outer atmosphere will eventually be puffed out in a gentle explosion and the Sun will be at the center of a planetary nebula.
The odds of humans creating a black hole On earth is more likely than the sun suddenly poof is off.
Do not fear the sun but fear humanity as our future killer. DCRANE:..as not even the effects of gravity move faster than light.
On the contrary: Gravity operates outside of space time. Its effect is instantaneous -otherwise you would have celestial objects orbiting each other based upon where they'used'to be.
There is no'frame dragging 'when objects orbit each other be they planets stars or galaxies. Let's not forget how pretty it would be to see all the gasses in the atmosphere freeze
and fall to earth like snow. Kinda tough to breath snow. All those troglodite Icelander survivalist-types living on geotherm would have to melt the snow just to breath.
I don't see why our moon or satellites would suddenly stop being caught in our gravity well.
A satellite is orbiting earth and both are orbiting the Sun . If the Sun disappeared Earth's trajectory would immediately change.
Any object that is in the path of this new trajectory would suddenly fall into Earth's gravity
and burn up or impact it. This includes the moon. Dcrane: Your wrong. If the sun went poof the gravity goes poof
and it's instantaneous as gravity is constrained not by the speed of light. It's either there
or it's not. The Earth would then move in a straight line in the direction of travel it was last going the instant the gravity disappeared.
A quick Google search makes it clear why you all are having such a hard time reconciling your different interpretations of the question:
For example even though the Sun is 500 light seconds from the Earth newtonian gravity describes a force On earth directed towards the Sun's position now not its position 500 seconds ago.
Putting a light travel delay (technically called retardation) into newtonian gravity would make orbits unstable leading to predictions that clearly contradict Solar system observations.
This might seem to contradict the Solar system observations described above but remember that general relativity is conceptually very different from newtonian gravity so a direct comparison is not so simple.
In the case of a disappearing sun (whatever that even really means; it's hard to discuss physics problems
'but let's consider that'poof'=the sun flies away from the solar system at some absurd speed close to the speed of light) the sun's velocity is not constant anymore so you cannot continue to use the'basically instantaneous'argument.
it would be 8 minutes before the Earth shot off into space but during that 8 minutes it would be orbiting as normal in that it wouldn't'lag'behind the sun.*Another way of looking at your discrepancy is to remind you all that relativity does away with an ABSOLUTE frame of reference.
It's impossible to discuss simultaneity; what's simultaneous somewhere in the universe will not be simultaneous elsewhere in the universe no matter how much you try to argue against that fact with Newtonian i e. everyday logic.
To say the the Earth would fly off the exact moment the sun'poofed'is meaningless for no such objective moment exists.
It is however still correct to say that gravity is basically instantaneous because it does not depend on the concept of simultaneity-i e.
Earth seeing where the sun is exactly when the sun sees where the sun is.
I apologize for this gigantic comment but it really is a very difficult concept to wrap our heads around.
it's physically impossible for the sun to ever just go'poof'via some hypothetical evil Zeno and his magical death ray.
It would indeed take 8 minutes for the Earth to leave its orbit and fly away into space.
This does not mean Earth experiences a frame delay and orbits an 8-minute old sun position;
The same goes for all satellites. They would retain their direction and speed (aka angular momentum) in relation to the only center of gravity the still have
Strictly speaking this is valid for'low'earth orbits only such as the GPS satellites'.'Very high orbits (in the range of 100.000 of km) actually will become more'round'as the nonlinear effects of the sun's gravity field fall away.
Basically the system goes from an uncalculatable three-body problem to a rather simple two-body one
the moon will still boringly rule our tides (he was lost not see before. We will only loose the difference between regular tide and spring tide
-Of course according to science the sun would never just disappear into nothing so his disappearing act would violate most conservation laws
and faster than light is no more fantasious that supposing that the sun itself would disappear with no trace.
But if the sun just stopped existing and that were the only violation to science then:
and that earth actually rotates not around sun but nearly around the sun was 8 minutes in the past.
Gravity doesnã¢Â#Â#t operate outside space time but is distorted space time. 2-The Moon would continue rotating around Earth with little change.
Both the Earth and Moon are on free fall around the sun so the sun doesnã¢Â#Â#t affect much of the internal working of the system.
Actually the Moon moves a little faster and a little slower around earth orbit depending on his distance to sun
but the effect is small. The Moon would not stop orbiting Earth and Earth would not crash on the Moon
because any change over sunã¢Â#Â#s gravitatory field would have similar effects on both bodies.
Both the Moon and satellites would change his trajectory nearly exactly the same as Earth.
For that reason most satellites would not change his orbit near Earth except the ones linked to Earth-Sun lagrange points.
GPS precision would be affected but no satellite would have a significant change on his orbit
and none would crash on earth. 3-No significant earthquakes and no atmosphere lost. The atmosphere would slowly cool itself turning even more attached to Earth. 4-No massive changes on tides.
No massive tidal waves. Sunã¢Â#Â#s tidal effect On earth is too weak to have an important effect.
dissappearing sun is not impossible-imagine some unknown dimensional rift or alien tech that simply relocates sun in a blink of a eye.
While nature wont survive-humans will at least a portion of us. We are evolved enough to survive in freezing climate.
or pass another planet in solar system big enough could pull us into orbit. We will also hit the rubble/stone etc belt at the edge of solar system-that aswell will fly off into every direction. lifestream brings up some interesting points.
It's pretty unlikely that earth would hit any other planets directly. Perhaps eventually if we were close enough we would spiral towards each other.
More likely though we would simply alter course significantly depending on how close we get. Just think of how many earths could fit in-between the surface of the earth and the moon alone.
As far as colliding with objects in the kuiper belt we might only hit a few to none.
These objects will for the most part fly off into a trajectory tangential to their current orbit away from the center of the solar system.
It would be interesting to see would happen to Jupiter. Being the largest body in the neighborhood it could potentially after untold millennia gather enough mass to form fusion reactions.
The planet would scratch there heads for about 10 seconds wondering why the hell didn't this happen sooner?
However relativity is far a more accurate model of how objects in our universe behave.
The article is about the heat from the sun hypothetically disappearing. The last paragraph about the mass of the sun being affected is really the cause of all the confusion.
It's a bit of an unnecessary tangent and might actually make for a good follow-up article.
I would have preferred that the author answered the original question âÂ#Âoeif the sun went outã¢Â#Â
Assuming you stop eating at the point the sun stops shining âÂ#Âwhich would be the case for some of us âÂ#Âhow long would it take to starve
but then that would be gone say a few months after the sun stopped shining at which point the human death rate would quickly accelerate and at
So by the end of the second year after the sun stops shining (more or less) all humans will be dead
if the sun stops shining so the mere âÂ#Âoeexistenceã¢Â# of that technology would not be our salvation other than to be useful to some
Lifestream goes on to say that the real issue is the path our planet takes.
and light from the sun in near-instantaneous fashion it's not hard to visualize something highly improbable yet entirely consistent with the laws of physics.
Consider the notion of an alien race which seeks to take over an inhabited planet. One tactic that could be employed would be a modular form of a Dyson sphere
(so that they aren't initially blocking any significant amount of heat/light from the Sun)
and then all rotated to have their major planar surfaces facing towards the center of the Sun. With a proper arrangement
and timing the net effect as seen from the Earth is that the Sun simply turns off in an incredibly short period of time (just long enough for each of the panels to rotate 90 degrees)
From the perspective of the aliens doing it they are now capturing close to 100%of the radiant energy of an entire star and that's likely a really huge asset for them for a variety of reasons.
the Sun could be made to turn off in a few moments for all practical purposes as far as the Earth is concerned.
a rougue molecular cloud wandering into the Solar system. If it's a smallish one-maybe just a few times bigger than the heliosphere-we might not even see it coming until it was almost here.
not that we could do anything about it anyway) Wouldn't that have some of the effects of the Sun going out?
After the earth floats through space for a few million years maybe it could be captured by another solar system...
and become its moon. then an emerging ET civilization who is just starting to explore Space could find it
Things don't travel between solar systems not even comets or asteroids all of which originate within our own solar system.
You do not find this even in science fiction. The âÂ#Âoeneedã¢Â# for us to explore space is a distinctly human anomaly possibly even a maladaptation and not somehow inevitable in alien intelligence even in itã¢Â#Â#s highest forms.
The movies of course suggest otherwise but thatã¢Â#Â#s just another human hang-up that alien intelligence must be like us and just another version of anthropomorphism.
despite no radiation from the Sun reaching the planet ever again. Tough but doable. The caveats in that previous paragraph are the much larger obstacles to overcome in my opinion.
Vektor so what youã¢Â#Â#re saying is that the sun isã¢Â# irrelevant?
Maybe we should devise a plan to turn off the sun would you suggest that? We need photosynthesis without it we all die.
If the sun stopped shining there would be widespread global panic and confusion it would NOT be business as usual.
Overtext Web Module V3.0 Alpha
Copyright Semantic-Knowledge, 1994-2011