mysteries of a dark universe
Bookmarked 707 weeks ago
watch this video commercial free on the spacerip app available in the apple and google play stores dark energy in full hd 1080p cosmology the study of the universe as a whole has been turned on its head by a stunning discovery that the universe is flying apart in all directions at an ever-increasing rate is the universe bursting at the seams or is nature somehow fooling usthe astronomers whose data revealed this accelerating universe have been awarded the nobel prize for physics and yet since 1998 when the discovery was first announced scientists have struggled to come to grips with a mysterious presence that now appears to control the future of the cosmos: dark energyon remote mountaintops around the world major astronomical centers hum along with state of the art digital sensors computers air conditioning infrastructure and motors to turn the giant telescopes deep in chile039s atacama desert the paranal observatory is an astronomical mecca this facility draws two megawatts of power enough for around two thousand homeswhat astronomers get for all this is photons tiny mass-less particles of light they stream in from across time and space by the trillions from nearby sources down to one or two per second from objects at the edge of the visible universein this age of precision astronomy observers have been studying the properties of these particles to find clues to how stars live and die how galaxies form how black holes grow and more but for all we039ve learned we are finding out just how much still eludes our grasp how short our efforts to understand the workings of the universe still fall a hundred years ago most astronomers believed the universe consisted of a grand disk the milky way they saw stars like our own sun moving around it amid giant regions of dust and luminous gas the overall size and shape of this quotisland universequot appeared static and unchangingthat view posed a challenge to albert einstein who sought to explore the role that gravity a dynamic force plays in the universe as a whole there is a now legendary story in which einstein tried to show why the gravity of all the stars and gas out there didn039t simply cause the universe to collapse into a heap he reasoned that there must be some repulsive force that countered gravity and held the universe uphe called this force the quotcosmological constantquot represented in his equations by the greek letter lambda it039s often referred to as a fudge factorin 1916 the idea seemed reasonable the dutch physicist willem de sitter solved einstein039s equations with a cosmological constant lending support to the idea of a static universenow enter the american astronomer vesto slipher working at the lowell observatory in arizona he examined a series of fuzzy patches in the sky called spiral nebulae what we know as galaxies he found that their light was slightly shifted in colorit039s similar to the way a siren distorts as an ambulance races past us if an object is moving toward earth the wavelength of its light is compressed making it bluer if it039s moving away the light gets stretched out making it redder 12 of the 15 nebulae that slipher examined were red-shifted a sign they are racing away from usedwin hubble a young astronomer went in for a closer look using the giant new hooker telescope in southern california he scoured the nebulae for a type of pulsating star called a cepheid the rate at which their light rises and falls is an indicator of their intrinsic brightness by measuring their apparent brightness hubble could calculate the distance to their host galaxies combining distances with redshifts he found that the farther away these spirals are the faster they are moving away from us this relationship called the hubble constant showed that the universe is not static but expandingeinstein acknowledged the breakthrough and admitted that his famous fudge factor was the greatest blunder of his career

the riddle of antimatter
Bookmarked 707 weeks ago
watch this and other space videos at http:spaceripcomin high-res 1080p explores one of the deepest mysteries about the origin of our universe according to standard theory the early moments of the universe were marked by the explosive contact between subatomic particles of opposite charge featuring short interviews with masaki hori tokyo university and jeffrey hangst aarhus universityscientists are now focusing their most powerful technologies on an effort to figure out exactly what happened our understanding of cosmic history hangs on the question: how did matter as we know it survive and what happened to its birth twin its opposite a mysterious substance known as antimatter a crew of astronauts is making its way to a launch pad at the kennedy space center in florida little noticed in the publicity surrounding the close of this storied program is the cargo bolted into endeavor039s hold it039s a science instrument that some hope will become one of the most important scientific contributions of human space flightit039s a kind of telescope though it will not return dazzling images of cosmic realms long hidden from view the distant corners of the universe or the hidden structure of black holes and exploding starsunlike the great observatories that were launched aboard the shuttle it was not named for a famous astronomer like hubble or the chandra x-ray observatorythe instrument called the alpha magnetic spectrometer or ams the promise surrounding this device is that it will enable scientists to look at the universe in a completely new way most telescopes are designed to capture photons so-called neutral particles reflected or emitted by objects such as stars or galaxies ams will capture something different: exotic particles and atoms that are endowed with an electrical charge the instrument is tuned to capture quotcosmic raysquot at high energy hurled out by supernova explosions or the turbulent regions surrounding black holes and there are high hopes that it will capture particles of antimatter from a very early time that remains shrouded in mysterythe chain of events that gave rise to the universe is described by what039s known as the standard model it039s a theory in the scientific sense in that it combines a body of observations experimental evidence and mathematical models into a consistent overall picture but this picture is not necessarily completethe universe began hot after about a billionth of a second it had cooled down enough for fundamental particles to emerge in pairs of opposite charge known as quarks and antiquarks after that came leptons and antileptons such as electrons and positrons these pairs began annihilating each othermost quark pairs were gone by the time the universe was a second old with most leptons gone a few seconds later when the dust settled so to speak a tiny amount of matter about one particle in a billion managed to survive the mass annihilation that tiny amount went on to form the universe we can know - all the light emitting gas dust stars galaxies and planets to be sure antimatter does exist in our universe today the fermi gamma ray space telescope spotted a giant plume of antimatter extending out from the center of our galaxy most likely created by the acceleration of particles around a supermassive black hole the same telescope picked up signs of antimatter created by lightning strikes in giant thunderstorms in earth039s atmosphere scientists have long known how to create antimatter artificially in physics labs - in the superhot environments created by crashing atoms together at nearly the speed of lighthere is one of the biggest and most enduring mysteries in science: why do we live in a matter-dominated universe what process caused matter to survive and antimatter to all but disappear one possibility: that large amounts of antimatter have survived down the eons alongside matterin 1928 a young physicist paul dirac wrote equations that predicted the existence of antimatter dirac showed that every type of particle has a twin exactly identical but of opposite charge as dirac saw it the electron and the positron are mirror images of each other with all the same properties they would behave in exactly the same way whether in realms of matter or antimatter it became clear though that ours is a matter universe the apollo astronauts went to the moon and back never once getting annihilated solar cosmic rays proved to be matter not antimatterit stands to reason that when the universe was more tightly packed that it would have experienced an quotannihilation catastrophequot that cleared the universe of large chunks of the stuff unless antimatter somehow became separated from its twin at birth and exists beyond our field of view scientists are left to wonder: why do we live in a matter-dominated universe

saturn039s mysterious moons
Bookmarked 714 weeks ago
watch in high-resolution 1080p launched three years before the new century a spacecraft wound its way through the empty reaches of the solar system on earth its progress was little noted as it swung twice by the planet venus then our moon and earth the asteroid belt and jupiteralmost seven years later on the first of july 2004 the cassini probe entered the orbit of saturn it then began to compile what has become one of the greatest photographic collections of all time of a giant gas planet surrounded by colorful rings guarded by a diverse collection of moons and millions of tiny moonlets within this record is a trail of clues pointing to the energy sources and complex chemistry needed to spawn life what are these mysterious worlds telling us about the universe and earth in the outer reaches of the solar system a billion and a half kilometers from the sun there is a little world known as enceladus nearly all of the sunlight that strikes its icy surface is reflected back into space making it one of the brightest objects in the solar systemat its equator the average temperature is minus 198 degrees celsius it can rise about 70 degrees higher in grooves that stretch across the south pole like tiger stripes looming over it is the giant planet saturnin myth saturn - the roman name for the primal greek god chronos - was the youngest son of gaia or earth and uranus sky wielding a scythe provided by his mother the story goes saturn confronted his abusive father castrating him the blood of uranus flowed into the seas fertilizing the earth and giving rise to enceladus and other giant offspring saturn039s moon enceladus has its own tangled story in 2005 the cassini spacecraft spotted plumes of water vapor shooting out into space from its south pole more recent close encounters have revealed jets of water flavored by slightly salty chemical compounds spewing out from vents in the rough cracked polar terrain that may mean that enceladus harbors a remarkable secret below its frigid surface: a liquid ocean and perhaps a chemical environment that could spawn simple life forms it039s not the only promising stop in the realm of saturn the moon titan is often said to resemble earth in its early days it is lined with volcanoes and a hazy atmosphere rich in organic compounds while enceladus is the size of great britain titan is ten times larger 50 larger than our moon and the second largest moon in our solar systemwe039ve known about titan since the astronomer christian huygens discovered it in 1655 and enceladus since william herschel spotted it in august 1789 just after the start of the french revolution scientists began to investigate these moons in earnest with the launch of the two voyager spacecraft in 1977 the lineup of outer planets in the solar system allowed the spacecraft to fly past each of themthey disclosed new details about their magnetic fields atmospheres ring systems and inner cores but what really turned heads were the varied shapes and surfaces of their moons they039ve all been pummeled over the millennia by wayward asteroids and comets a few appear to be sculpted by forces below their surfaces neptune039s largest moon triton has few craters it039s marked with circular depressions bounded by rugged ridges there are also grooves and folds that stretch for dozens of miles a sign of fracturing and deforming triton has geysers too shooting some five miles above the surface but on this frigid moon -- so far from the sun -- the liquid that spouts is not water but nitrogen tiny miranda one of 27 known moons that orbit uranus wears a jumbled skin that039s been shaped and reshaped by forces within jupiter039s moon io -- orbiting perilously close to the giant planet is literally turning itself inside out rivers of lava roll down from open craters that erupt like fountains flying by europa voyager documented a complex network of criss-crossing grooves and ridges in the 1990s the galileo spacecraft went back to get a closer look it found that europa039s surface is a crazy quilt of fractured plates cliff faces and gullies amid long grooves like a network of superhighways how did it get like this then heat rising up through a subsurface ocean of liquid water cracks and shifts and spreads the icy surface in a thousand different ways europa039s neighbors callisto and ganymede show similar features suggesting they too may have liquid oceans below their surfaces crossing outward to saturn voyager found a similar surface on the moon enceladus so when the cassini spacecraft arrived in 2004 it came looking for answers to a range of burning questions: if this moon and others have subsurface oceans do they also have the ability to cook up and support life and what could they tell us about the origin of life throughout the galaxy

man made earthquakes and more
Bookmarked 714 weeks ago
hank hits you with a ton of news this time - amazon ceo jeff bezos has plans to retrieve saturn v rocket engines from the bottom of the atlantic new research on the impacts from the deep water horizon oil spill to life in the gulf of mexico some indications that humanity has affected even quotnaturalquot disasters like earthquakes findings of radioactive iodine off the coast of southern california and some possible insights into the cause of colony collapse disorder which is devastating the nation039s honey bee populationlike scishow on facebook: http:wwwfacebookcomscishowfollow scishow on twitter: http:wwwtwittercomscishowreferences for this episode can be found in the google document here: http:dftba-2pu_scishow science news titanic amazon jeff bezos apollo 11 saturn v space engine rocket sonar nasa museum of flight seattle deepwater horizon oil spill gulf of mexico alvin navy floc coral research zooplankton food chain noaa dolphin stranding stranded marine mammals earthquake usgs man-made hydraulic fracturing fracking natural gas geology geologists natural disasters marine biology fukushima daiichi iodine 131 kelp bed radioactive contamination honey bee colony collapse disorder harvard biology high-fructose corn syrup insecticide pollination

jeremy clarkson speed - nasa weather modification
Bookmarked 728 weeks ago
jeremy clarkson heads to mississippi where nasa test their space shuttle solid rocket boosters consuming half a million gallons of fuel they generate the thrust needed to propel astronauts into space they039re a tad noisy too

neil degrasse tyson: quotaudacious visionsquot
Bookmarked 704 weeks ago
dr neil degrasse tyson delivers an impassioned plea to the us congress to hoist america from its economic lethargy by boldly reinvesting in a robust space program spread the word: penny4nasaaudio:dr neil degrasse tyson 2012 senate commerce hearing on the future of the us space programmusic:quotleaving earthquot by clint mansell from the quotmass effect 3quot original soundtrack thanks to fibbsjc for the great recommendation footage:nasaquotbarakaquotquotduck and coverquot psa 1951the history channel -- quotvietnam in hdquotaljazeera -- quotfour dead in ohioquotcbs news -- fixing the foreclosure catastrophenational geographic -- quotliving on marsquotdominic -- quotthe city limitsquot timescapes -- quotrapture by tom lowequot krasnykofe -- victory parade june 24 1945 moscow ussr hq restoredreasontv -- what we saw at occupy wall street039s may day protest in nycc-span -- quotamerican artifactsquot preview clip engravingprinting us currencyfunker530 daily combat footage -- firefight on helmet cam in afghanistanday in the life -- microbiology virology with prof bill rawlinsonhomelesser -- a weekend helping the homelesswoodside high school class of 2011 graduation in hdcopyright disclaimer under section 107 of the copyright act 1976 allowance is made for quotfair usequot for purposes such as criticism comment news reporting teaching scholarship and research fair use is a use permitted by copyright statute that might otherwise be infringing non-profit educational or personal use tips the balance in favor of fair use all copyrighted materials contained herein belong to their respective copyright holders i do not claim ownership over any of these materials in no way do i benefit either financially or otherwise from this video

challenges of getting to mars: curiosity039s seven minutes of terror
Bookmarked 704 weeks ago
team members share the challenges of curiosity039s final minutes to landing on the surface of mars

challenges of getting to mars: curiosity039s seven minutes of terror
Bookmarked 701 weeks ago
team members at nasa039s jet propulsion laboratory share the challenges of the curiosity mars rover039s final minutes to landing on the surface of mars

when will time end
Bookmarked 768 weeks ago
it now seems that our entire universe is living on borrowed time how long it can survive depends on whether stephen hawking039s theory checks out special thanks to ivan bridgewater for use of footagetime is flying by on this busy crowded planet as life changes and evolves from second to second and yet the arc of human lifespan is getting longer: 65 years is the global average way up from just 20 in the stone age modern science however provides a humbling perspective our lives indeed the life span of the human species is just a blip compared to the age of the universe at 137 billion years and counting it now seems that our entire universe is living on borrowed time and that even it may be just a blip within the grand sweep of deep time scholars debate whether time is a property of the universe or a human invention what039s certain is that we use the ticking of all kinds of clocks from the decay of radioactive elements to the oscillation of light beams to chart and measure a changing universe to understand how it works and what drives it our own major reference for the passage of time is the 24-hour day the time it takes the earth to rotate once well it039s actually 23 hours 56 minutes and 41 seconds approximately if you039re judging by the stars not the sun earth acquired its spin during its birth from the bombardment of rocks and dust that formed it but it039s gradually losing that rotation to drag from the moon039s gravitythat039s why in the time of the dinosaurs a year was 370 days and why we have to add a leap second to our clocks about every 18 months in a few hundred million years we039ll gain a whole hourthe day-night cycle is so reliable that it has come to regulate our internal chemistrythe fading rays of the sun picked up by the retinas in our eyes set our so-called quotcircadian rhythmsquot in motion that039s when our brains begin to secrete melatonin a hormone that tells our bodies to get ready for sleep long ago this may have been an adaptation to keep us quiet and clear of night-time predatorsfinally in the light of morning the flow of melatonin stops our blood pressure spikes body temperature and heart rate rise as we move out into the worldover the days and years we march to the beat of our biologybut with our minds we have learned to follow time039s trail out to longer and longer intervalsphilosophers have wondered does time move like an arrow with all the phenomena in nature pushing toward an inevitable endor perhaps it moves in cycles that endlessly repeat and even perhaps restore what is there we know from precise measurements that the earth goes around the sun once every 365256366 days as the earth orbits with each hemisphere tilting toward and away from its parent star the seasons bring on cycles of life birth and reproduction decay and death only about one billionth of the sun039s energy actually hits the earth and much of that gets absorbed by dust and water vapor in the upper atmosphere what does make it down to the surface sets many planetary processes in motion you can see it in the annual melting and refreezing of ice at the poles the ebb and flow of heat in the tropical oceansthe seasonal cycles of chlorophyll production in plants on land and at sea and in the biosphere at largethese cycles are embedded in still longer earth cycles ocean currents for example are thought to make complete cycles ranging from four to around sixteen centuriesmoving out in time as the earth rotates on its axis it completes a series of interlocking wobbles called milankovic cycles every 23 to 41000 years they have been blamed for the onset of ice ages about every one hundred thousand years then there039s the carbon cycle it begins with rainfall over the oceans and coastal waves that pull carbon dioxide into the sea

the 039supernova of a generation039
Bookmarked 747 weeks ago
thunderf00t on twitter:http:twittercomthunderf00tthunderf00t blog at:http:thunderf00torg039supernova of a generation039http:wwwgeekcomarticlesgeek-ceteraastronomers-discover-the-supernova-of-a-generation-20110827there is a supernova in m101 a relatively nearby galaxy some 20 million light years away the galaxy is quite bright and in the constellation of ursa major the great bear or big dipper now by pure chance i had taken a picture of m101 about a month ago so the position of the supernova can be easily seen further i was out there last night basically doing the same thing again and i could actually see it 039live at the eyepiece039 with my 11in schmidt cassigrain however eyes are fairly sensitive to this sort of thing and it039s likely that it will be a while yet before i can get 039video039 of this at the eyepiece however i have got a 039deep sky039 video camera that should do the joband yup figure im going to have a go at doing a time lapse on this one the problem with time lapse of the sky is things tend to be a long way away so they have to move a long way for you to see anything practically that means there ain039t much you can do especially if you only have 8 hrs of dark i039ve already had a go at the moon jupiter and uranus but this is a golden opportunity the chance to do a timelapse of a distant galaxy by some reckoning this is a once in generation supernovaall this material is available under a creative commons attribution share alike license attribution thunderf00t

blowing up asteroids with neil degrasse tyson
Bookmarked 695 weeks ago
neil degrasse tyson and neemo nasa extreme environment mission operations explore what it takes to stop an asteroid from colliding with earthspaced out - produced by http:motherboardvicecomcheck out the first episode of spaced out: http:bitlyspaced-out-1subscribe for new videos everyday: http:bitlysubscribe-to-vicecheck out our full video catalog: http:wwwyoutubecomuservicevideosvideos daily editorial and more: http:vicecomlike vice on facebook: http:fbcomvicefollow vice on twitter: http:twittercomviceread our tumblr: http:vicemagtumblrcom

incredible ufo moves across sun 2012 hd
Bookmarked 705 weeks ago
incredible video of an object captured by soho which seems to show a double ringed shaped object phase into view at the top of the screen then darting across the sun before shooting off out of view is it an extraterrestrial craft or something else as always you decide will post all relevant data in a few days so even if nasa remove the raw footage i have the raw soho files available to download thankswinged ufo next to sun 2012 hd http:wwwyoutubecomwatchv=wrhhb_ste6esolar ufo fired upon or emits beam of energy 2012 hd http:wwwyoutubecomwatchv=e9_eu9roobsconfirmed: ufos in suns orbit 2012 hd http:wwwyoutubecomwatchv=cpvimgwlr2uplanetship returns with smaller vessel 2012 hd http:wwwyoutubecomwatchv=bpabnbbebw4ufo: the sun tether and baltic connection 2012 hd http:wwwyoutubecomwatchv=7aunh6fqwramassive planetship in suns orbit 2012 hd http:wwwyoutubecomwatchv=zqawbcmhyhgadg facebook: http:wwwfacebookcompagesalien-disclosure-group189249627773146follow adg on twitter: http:twittercomadg_uk

ufo everywhere around 2 suns nibiru march 2011mp4
Bookmarked 769 weeks ago
second sun 039nibiru039 on china msm televisionincluding translation march 2 2011translation: she says quottonight039s headline story we have a video given to us today by a man who claims he saw and filmed 2 suns this afternoonquot male anchor man says quotthe sun appears to be reflected in the clouds to cause an optical illusion but the man who took this video insists he was seeing two sunsquot man interviewed quoti know this sounds absurd but i when i was filming my family i saw two suns among the clouds and filmed it i do not know how else to explain itquotnibiru seen from manchester uk on march 03 2011 one factor to consider here is there is no atmospheric refraction if is this was either a sundog or reflection as the suns primary colors would be split into their component spectrometric colors of the rainbow i have been accused of hoaxing this video yet independent witnesses with no need to 039claim039 anything also saw the same thing not to mention the numerous other videos unrelated to this now surfacing from russia asia the uk and even sohomusic 1 : battlestar galactica season 1 - the shape of things to comemusic 2 : battlestar galactica season 1 - boomer fleessubscribe - http:wwwyoutubecomsupergia007be love - peace

black hole meltdown in the galactic center
Bookmarked 718 weeks ago
black hole extravaganza in 1080p from esocast not long ago watching something being ripped apart as it falls towards a giant black hole would be science fiction this is now realityobservers under dark skies far from the bright city lights can marvel at the splendor of the milky way arching in an imposing band across the sky zooming in towards the center of our galaxy about 25000 light years away you can see that it is composed of myriads of starsthis is a pretty impressive sight but much is hidden from view by interstellar dust and astronomers need to look using a different wavelength the infrared that can penetrate the dust clouds with large telescopes astronomers can then see in detail the swarm of stars circling the supermassive black hole in the same way that the earth orbits the sunthe galactic center harbors the closest supermassive black hole known and the one that is also the largest in terms of its angular diameter on the sky making it the best choice for a detailed study of black holesthis black hole039s mass is a hefty four million times that of the sun earning it the title of supermassive black hole although it is huge this black hole is currently supplied with little material and is not shining brightly but this is about to changeusing eso039s very large telescope a team of astronomers has discovered a new object that is heading almost straight towards the black hole at vertiginous speed the object is not a star but a cloud of gasquotthe cloud consists mainly of hydrogen gas gas which we see anyhow in the galactic center all over the place this particular cloud weighs more or less three times the mass of earth so it039s a rather small and tiny blob only but it glows very brightly in the light of the stars which are surrounding it quotas the astronomers watch the cloud has been picking up pace as it gets closer to the giant black hole its speed has doubled in the last seven years and it is now speeding towards the black hole at more than 8 million kilometers per hourthe astronomers have already seen the cloud039s outer layers becoming more and more disrupted over the last few years as it approaches the black hole but the exciting part is yet to comequotthe black hole imagine it sitting here has a tremendous gravitational force and the cloud as it comes in it will be elongated and stretched it will become essentially like spaghetti it will be elongated and falling into the black holequotquotthe next few years will be really fantastic and exciting because we are probing the territory here this cloud comes and gets disrupted but now it will begin to interact with the hot gas right around the black hole we have never seen this beforequotno one knows what will happen next the cloud will probably heat up and may start to emit powerful x- rays as it gets disrupted in the end the material will eventually disappear by falling into the black hole for the scientists this event is truly a unique chance to probe the hot gas around the black holequotbut this process of how material gets into the black hole really is not clear to us we don039t understand it in any detail and here in the galactic center we have an opportunity so to speak to have a probe of this process how material really gets added to the black hole and what the physical processes are how the interactions happen in this very central region that039s a fantastic opportunityquotthis is indeed science fiction becoming science fact

msl video from curiosity as she landed on mars
Bookmarked 697 weeks ago
a low resolution copy of colour video taken from curiosity as she landed on mars has been released it shows the heat shield deploying before plumes of dust appear as the rocket engines fire and curiosity touches downin coming weeks the full high definition video will be downlinked