The mind-blowing answer comes from a theory describing the birth of the universe in the first instant of time. The universe has long captivated us with its immense scales of distance and time. How far does it stretch? Where does it end... and what lies beyond its star fields... and streams of galaxies extending as far as telescopes can see? These questions are beginning to yield to a series of extraordinary new lines of investigation... and technologies that are letting us to peer into the most distant realms of the cosmos... But also at the behavior of matter and energy on the smallest of scales. Remarkably, our growing understanding of this kingdom of the ultra-tiny, inside the nuclei of atoms, permits us to glimpse the largest vistas of space and time. In ancient times, most observers saw the stars as a sphere surrounding the earth, often the home of deities. The Greeks were the first to see celestial events as phenomena, subject to human investigation... rather than the fickle whims of the Gods. One sky-watcher, for example, suggested that meteors are made of materials found on Earth... and might have even come from the Earth. Those early astronomers built the foundations of modern science. But they would be shocked to see the discoveries made by their counterparts today. The stars and planets that once harbored the gods are now seen as infinitesimal parts of a vast scaffolding of matter and energy extending far out into space. Just how far... began to emerge in the 1920s. Working at the huge new 100-inch Hooker Telescope on California's Mt. Wilson, astronomer Edwin Hubble, along with his assistant named Milt Humason, analyzed the light of fuzzy patches of sky... known then as nebulae. They showed that these were actually distant galaxies far beyond our own. Hubble and Humason discovered that most of them are moving away from us. The farther out they looked, the faster they were receding. This fact, now known as Hubble's law, suggests that there must have been a time when the matter in all these galaxies was together in one place. That time... when our universe sprung forth... has come to be called the Big Bang. How large the cosmos has gotten since then depends on how long its been growing... and its expansion rate. Recent precision measurements gathered by the Hubble space telescope and other instruments have brought a consensus... That the universe dates back 13.7 billion years. Its radius, then, is the distance a beam of light would have traveled in that time ... 13.7 billion light years. That works out to about 1.3 quadrillion kilometers. In fact, it's even bigger.... Much bigger. How it got so large, so fast, was until recently a deep mystery. That the universe could expand had been predicted back in 1917 by Albert Einstein, except that Einstein himself didn't believe it... until he saw Hubble and Humason's evidence. Einstein's general theory of relativity suggested that galaxies could be moving apart because space itself is expanding. So when a photon gets blasted out from a distant star, it moves through a cosmic landscape that is getting larger and larger, increasing the distance it must travel to reach us. In 1995, the orbiting telescope named for Edwin Hubble began to take the measure of the universe... by looking for the most distant galaxies it could see. Taking the expansion of the universe into account, the space telescope found galaxies that are now almost 46 billion light years away from us in each direction... and almost 92 billion light years from each other. And that would be the whole universe... according to a straightforward model of the big bang. But remarkably, that might be a mere speck within the universe as a whole, according to a dramatic new theory that describes the origins of the cosmos. It's based on the discovery that energy is constantly welling up from the vacuum of space in the form of particles of opposite charge... matter and anti-matter.
black
holes
supernova
space
universe
stars
solar
system
comets
asteroids
cosmos
cosmic
galaxies
planets
mars
sun
moon
earth
nasa
hubble
cern
lhc
inflationary
theory
alan
guth
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documentary
conspiracy
ufo
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Channels:
Astronomy And Space
Added: 597 days ago by
ishare
Runtime: 01:00 |
Views: 111 |
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cgi asteroid impact to the music of pink floyd's "the great gig in the sky" (dark side of the moon)
discovery
channel
miracle
planet
asteroid
impact
music
pink
floyd
dark
side
of
the
moon
great
gig
in
sky
hd
720p
Channels:
Astronomy And Space
Archeology, Geology & Nature
Added: 720 days ago by
poker1
Runtime: 04:47 |
Views: 128 |
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Total Solar Eclipse - Live from Turkey 2006
In 2006 we sent a crew to Side Turkey to share the total solar eclipse live with the world over the Internet. While we wont be traveling to webcast the eclipse in 2009, we plan to cover the total solar eclipse in July 2010. For this year, were providing links to other eclipse Web sites, and well direct you to live Webcasts or broadcasts of the eclipse at http://www.exploratorium.edu/eclipse/2009/
astronomy
earth
eclipse
exploratorium
moon
science
sky
solar
sun
Turkey
webcast
Channels:
Astronomy And Space
Added: 720 days ago by
poker1
Runtime: 02:22 |
Views: 70 |
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Some pictures taken from near earth orbit and from outer space showing our beautiful earth, astronauts working in space, space shuttle Endeavour, International Space Station (ISS), the hubble telescope and astronauts walking on the moon. Hope you´ll enjoy it ;)
ISS
Earth
Space
Shuttle
Astronauts
Moon
Universe
Galaxy
Hubble
Sun
Stars
NASA
ESA
Solar-System
Orrery
Apollo11
Orbit
Endeavour
Columbia
Atlantis
Challenger
Discovery
Gravity
BlackHole
NeilArmstrong
BuzzAldrin
MichaelCollins
Apollo13
Lovell
Swigert
Haise
Channels:
Astronomy And Space
Added: 720 days ago by
poker1
Runtime: 04:26 |
Views: 119 |
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Scientists research surface of the Titan moon - BBC
Titan's landscape and surface similarities with Earth could shed valuable light on what sparked the life explosion on Earth, and how possible it might be for life to exist on other planets. Watch more Titan - A Place Like Home? from BBC Worldwide here: http://www.youtube.com/view_play_list?p=5AEBE31BE1033D45
bbc
titan
moon
universe
planet
space
human
exploration
race
station
tracking
saturn
jupiter
technology
pictures
life
outer
BBCWorldwide
Probe
Discovery
Moons
Channels:
Archeology, Geology & Nature
Added: 720 days ago by
poker1
Runtime: 05:03 |
Views: 88 |
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The video of the very first moon landing of the apollo 11 mission in 1969! Neil Armstrong was the first man to set foot on the moon with his now legenday words "One small step for man, a giant leap for mankind." This is a truly amazing video and it was in 1969!!! If you think about it, you have orders of magnitude more processing power in your mobile phone than they did in the whole space craft!! Incredible!
first
moon
landing
1969
neil
armstrong
buzz
aldrin
apollo
11
space
earth
travel
Channels:
American History
Astronomy And Space
Added: 727 days ago by
poker1
Runtime: 01:44 |
Views: 107 |
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Apollo 11 on the Sea of Tranquility
Breathtaking ultra high resolution photos of mankind's historic first steps on the Moon... on the lunar Sea of Tranquility. Monday July 20th is the 40th anniversary of this first moonwalk. Music is Chopin's Trois Nouvelles Etudes, 2nd in A flat major.
moon
apollo
11
astronauts
nasa
neil
armstrong
space
saturn
rocket
giant
leap
for
mankind
solar
system
orbit
eva
hoax
cell
mortgage
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credit
Channels:
American History
Astronomy And Space
Added: 727 days ago by
poker1
Runtime: 03:11 |
Views: 100 |
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