









Some amazing shots of our amazing universe, enjoy!
Pillars of Creation
This image, entitled ‘The Pillars of Creation’ is one of the most famous photographs taken by the Hubble Telescope, and shows vast interstellar clouds. The picture captures a portion of the Eagle Nebula, and what we are seeing is actually the creation of new stars in this ‘young’ nebula.
Carina Nebula
These ethereal clouds of matter are found in the Carina Nebula, a bright formation that envelops several clusters of stars. Although it is one of the largest and brightest nebulae in the night sky, it is far less well known and observed than more famous formations such as Orion due to its position deep in the Southern Hemisphere. The Carina Nebula is located in part of our own galaxy, approximately 6,500 to 10,000 light-years from the Earth.
Milky Way
This fabulous image from NASA shows the stars that swirl at the centre of our home galaxy, the Milky Way. Clouds of dust normally block the view from Earth to the galaxy’s centre, but by using an infra red camera the photographer was able to reveal parts of the spectrum that are usually invisible.
Valles Marineris, Mars
This image, a collaged mosaic of 102 photographs taken by the Viking 1 Orbiter in 1980, shows Mars and the vast Valles Marineris that cut a deep gash through the planet’s equator. The system of canyons is 4,000 kilometres in length, 200 kilometres wide, 8 kilometres deep at its lowest points, and as such is the biggest known canyon in the solar system.
Orion Nebula
Ever since human beings turned their attention to the heavens they have been aware of the Orion Nebula, a celestial feature situated at the south of Orion’s Belt that is visible to the naked eye. The ancient Mayan culture of Central America had a folk tale that explained this smudgy star-filled part of the night sky. The Hubble Space Telescope captured this wonderful image of the nebula in 2006, offering humanity the most detailed glimpse of Orion yet.
Although it would be impossible to do this on earth, you actually could do this on the moon. The moon has a cold core and it also doesn't have any oceans or groundwater to mess things up. In addition, the moon has no atmosphere, so the tunnel would have a nice vacuum in it that eliminates aerodynamic drag.
So, imagine that the tunnel through the moon is 20 feet (7 meters) in diameter. Down one side is a ladder. If you were to climb down the ladder, what you would find is that your weight decreases. Gravity is caused by objects attracting one another with their mass. As you descend into the tunnel, more and more of the moon's mass is above you, so it attracts you upward. Once you climbed down to the center of the moon you would be weightless. The mass of the moon is all around you and attracting you equally, so it all cancels out and you would feel weightless.
If you were to actually leap into the tunnel and allow yourself to fall, you would accelerate toward the center to a very high speed. Then you would zoom through the center and start decelerating. You would eventually stop when you reached the tunnel's lip on the other side of the moon, and then you would start falling back down the tunnel in the other direction. You would oscillate back and forth like this forever.
If you could do this on earth, one amazing effect would be the ease of travel. The diameter of the earth is about 12,700 kilometers (7,800 miles). If you drilled the tunnel straight through the center and could create a vacuum inside, anything you dropped into the tunnel would reach the other side of the planet in just 42 minutes
Maybe this is the travel of the future?
"The idea that other universes - as well as our own - lie within "bubbles" of space and time has received a boost.
Studies of the low-temperature glow left from the Big Bang suggest that several of these "bubble universes" may have left marks on our own.
This "multiverse" idea is popular in modern physics, but experimental tests have been hard to come by.
The preliminary work, to be published in Physical Review D, will be firmed up using data from the Planck telescope.
For now, the team has worked with seven years' worth of data from the Wilkinson Microwave Anisotropy Probe, which measures in minute detail the cosmic microwave background (CMB) - the faint glow left from our Universe's formation.
'Mind-blowing'The theory that invokes these bubble universes - a theory formally called "eternal inflation" - holds that such universes are popping into and out of existence and colliding all the time, with the space between them rapidly expanding - meaning that they are forever out of reach of one another.
But Hiranya Peiris, a cosmologist at University College London, and her colleagues have now worked out that when these universes are created adjacent to our own, they may leave a characteristic pattern in the CMB.
"I'd heard about this 'multiverse' for years and years, and I never took it seriously because I thought it's not testable," Dr Peiris told BBC News. "I was just amazed by the idea that you can test for all these other universes out there - it's just mind-blowing.""Kurt Gödel was best known as a mathematician and secondarily known as an extreme eccentric. After his death, he became known for something else: creating an ontological proof of the existence of God.
While some branches of reasoning are meant to start with observable phenomena, ontological proof doesn't grow out of earthly proof. What heavenly thing could? Sure, things might look bleak on earth, but there could be other worlds where things always go swimmingly. Or perhaps in this world everything is going the only way they could possibly go, under the watchful eye of a loving God, but us humans are too blind to see that. Observation can't prove what is supposedly unprovable. Instead of detective work and evidence, ontological arguments are derived from reason alone. A set of assumptions, or axioms, are combined to prove a larger truth.
Gödel finished the proof in the early 1940s, but the proof was not copied by peers until the 1970s. He didn't let anyone know about it until he believed that he was dying. It wasn't finally published until the 1980s. Let's take a good look at it:
Gödel based his argument on an early argument of St. Anselm's. St. Anselm defined God as the greatest being in the universe. No greater being could be imagined. However, if God did not exist, then a greater being had to be possible to imagine - one which exists. Since it wasn't possible, by definition, to imagine a greater being than the greatest being imaginable, God had to exist.
Gödel twisted this argument a little. He used modal logic to prove his point. Modal logic distinguishes between certain different states that certain suppositions have. Some suppositions are possible in some worlds, some possible only in a certain world, and some true in all possible worlds. If they are true in all possible worlds, they are considered to be always 'necessary'.
God can either necessarily exist, or necessarily not exist. If God is an all-powerful being, and he exists, he necessarily exists in all possible worlds. If he doesn't exist, he necessarily doesn't exist in any possible worlds. It is not possible to say that God does not exist in any possible world. No matter how slim the chance is, God might exist. That means that God can't necessarily not exist. Since the choices are either God necessarily does exist, or necessarily doesn't, and we have eliminated the possibility that he necessarily doesn't, the only possibility left is that he necessarily does.
Start prayin'.
Or maybe not. There's no doubt that Gödel was a brilliant man - he was a good friend of Albert Einstein's, who admired him greatly. It is also thought that, during his life, he had certain religious and mystical convictions. However, he specifically held the proof back during his lifetime because he didn't wish it to be taken as 'his proof that God exists'. He, in fact, didn't want people to think he believed in God at all. He was clear that the entire proof was simply an exercise in modal logic, derived from a certain set of assumptions. Those assumptions can be questioned. For example, Gödel's definition of God didn't have anything to do with the behavior of a deity, it was just a variation on St. Anselm's 'greatest imaginable being'. In other words, it was an axiom specifically chosen for both a vague sense of religion and the ability to make the rest of the proof work. If someone defined God differently - the being that made the world in seven days, for example - then the proof no longer applies. There have plenty of atheist thinkers knocking down the proof. And plenty of theist thinkers expanding on it.
It's a pretty looking page, though.
"Mankind has been broadcasting radio waves into deep space for about a hundred years now — since the days of Marconi.
That, of course, means there is an ever-expanding bubble announcing Humanity’s presence to anyone listening in the Milky Way. This bubble is astronomically large (literally), and currently spans approximately 200 light years across.
But how big is this, really, compared to the size of the Galaxy in which we live (which is, itself, just one of countless billions of galaxies in the observable universe)?
To answer that question, I put together the following diagram of our galaxy with the “Humanity Bubble” embedded within it."
Re: ninemsn.com.au
Two people have been killed in a helicopter crash in Sydney's Upper North Shore this morning.The Bell 206 model helicopter crashed heavily at the foot of a 20m cliff in dense bushland at South Turramurra about 9.15am (AEST), NSW police said.
The pilot and a passenger are confirmed to have died in the crash, in Lane Cove National Park near Kissing Point Road.
Emergency services, who had to scale down a cliff face to reach the crash site, are yet to identify the victims.
Sydney has been hit by strong winds and heavy rainfall today but it is not known if poor weather was a factor in the crash.
Residents heard the chopper circling for some time followed by a loud explosion.
Airservices Australia had no immediate details about the chopper's flight path because it was flying below controlled airspace, which is normal for helicopters and small aircraft, a spokesman said.
The Australian Transport Safety Bureau is dispatching a team to investigate, a spokesman said.
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A desert sheikh has carved out a big name for himself — by having his moniker etched in capital letters visible from space. Workmen scoured “HAMAD” into the sand on the orders of Abu Dhabi’s Sheikh Hamad Bin Hamdan Al Nahyan.
The name is two miles across — with letters a kilometre high. It is so huge that the “H”, the first “A” and part of the “M” have been made into waterways. The mega-rich sheikh, 63 — a member of the ruling family of Abu Dhabi — in the oil-rich United Arab Emirates — boasts a £14billion fortune that is second only to the Saudi king’s.