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Physicists To Test If Universe Is A Computer Simulation

Physicists To Test If Universe Is A Computer Simulation | Good news from the Stars | Scoop.it
Physicists have devised a new experiment to test if the universe is a computer. A philosophical thought experiment has long held that it is more likely than not that we're living inside a machine.

Via dannybloomfield
Guillaume Decugis's insight:

Very meta but interesting read. Are we in a matrix? 

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Ally Greer's curator insight, October 15, 2013 2:35 PM

Can hardly wrap my brain around this concept and yet it so excites me. I know @Guillaume Decugis loves matrices!

Ludovic LE MOAN's comment, January 12, 2014 4:31 AM
I am surprised to find this article since I believe myself, we are part of a simulator. My idea to try to prove it should be to find a gap in our time scale. If we can demonstrate the time is not continious, we will have found this evidence. Like a computer time is sharing by processus, it should be the same for universe!
Guillaume Decugis's comment, January 12, 2014 7:23 PM
I've just read an interesting SF novel on that topic: Redshirts by John Scalzi http://www.amazon.com/Redshirts-A-Novel-Three-Codas/dp/0765334798 Interesting read on that topic!
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To boldly go where only Astrophysicians have gone before. What I find interesting (and can roughly understand) in Astronomy & Space exploration these days.
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Mars One colonization project? Not gonna happen according to MIT

Mars One colonization project? Not gonna happen according to MIT | Good news from the Stars | Scoop.it
Whatever your views on Mars One, at the very least they have put the topic of Mars colonization in the public eye. Their plan, although ambitious, has received coverage from media across the world. For that, they can be applauded.
Guillaume Decugis's insight:
Interesting debate between MIT scientists and the Mars One team. While I'm always cautious of naysayers, you have to admit that the project seems foolish from the arguments they're making.
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What would happen to someone falling into a black hole?

What would happen to someone falling into a black hole? | Good news from the Stars | Scoop.it
If you fell into a black hole, you might expect to die instantly. But in fact your fate would be far stranger than that
Guillaume Decugis's insight:

Very interesting and clear description. The fact that the time to compute and decode information can have an impact on information itself, and physics laws, is fascinating. 

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The Moon Was A First Step, Mars Will Test Our Capabilities, But Europa Is The Prize

The Moon Was A First Step, Mars Will Test Our Capabilities, But Europa Is The Prize | Good news from the Stars | Scoop.it
The icy moon Europa is perhaps the most tantalising destination in our solar system.
Guillaume Decugis's insight:
Life in the solar system?
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Eight Exoplanets That Could Support Life Discovered

Eight Exoplanets That Could Support Life Discovered | Good news from the Stars | Scoop.it
Eight planets have been found existing in the “Goldilocks” zone around their stars, which is neither too hot nor too cold for liquid water. Two of these, on the characteristics we can measure, resemble Earth more closely than any other known planet.
Guillaume Decugis's insight:
Getting closer to finding Earth II.
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They almost broke the Hubble: how the telescope that we discovered dark energy with was rescued.

They almost broke the Hubble: how the telescope that we discovered dark energy with was rescued. | Good news from the Stars | Scoop.it
Together in public for the first time since their 2009 mission, the crew of the final Hubble servicing mission tells tales of their journey.
Guillaume Decugis's insight:
The Hubble space telescope is invaluable. But we nearly had to live without one for a long time.
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An Astronaut Reveals What Life in Space Is Really Like

An Astronaut Reveals What Life in Space Is Really Like | Good news from the Stars | Scoop.it
Dan Winters There’s no way to anticipate the emotional impact of leaving your home planet. You look down at Earth and realize: You’re not on it. It’s breathtaking. It’s surreal. It’s a “we’re not in Kansas anymore, Toto” kind of feeling.
Guillaume Decugis's insight:
Great details on what life in space feels like.
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The Physics of a Spinning Spacecraft

The Physics of a Spinning Spacecraft | Good news from the Stars | Scoop.it
Adding a circular motion to a spacecraft creates a gravity-like effect.
Guillaume Decugis's insight:
And the formula that correlates them.
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Milky Way may bear 100 million life-giving planets

Milky Way may bear 100 million life-giving planets | Good news from the Stars | Scoop.it
“ (Phys.org) —There are some 100 million other places in the Milky Way galaxy that could support complex life, report a group of university astronomers in the journal Challenges.”
Via Jeff Powell
Guillaume Decugis's insight:
Despite skepticism, statistics are clear: the odds of earth being unique are small.
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The Moon Now Has a Better Internet Connection Than You Thanks to NASA

The Moon Now Has a Better Internet Connection Than You Thanks to NASA | Good news from the Stars | Scoop.it
It's tough to find a good Internet speed without paying your cable provider through the nose to get it, but NASA can get you one... if you live on the Moon.
Guillaume Decugis's insight:

Ready to move?

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Vincent Lieser's curator insight, June 3, 2014 7:28 PM

Information overflow goes interplanetary. 

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Big Bang author Professor Andrei Linde gets surprise visit as his theory was just proven.

Assistant Professor Chao-Lin Kuo surprises Professor Andrei Linde with evidence that supports cosmic inflation theory. The discovery, made by Kuo and his colleagues at the BICEP2 experiment, represents the first images of gravitational waves, or ripples in space-time. These waves have been described as the "first tremors of the Big Bang."

Guillaume Decugis's insight:

This is probably what scientists live for: the unique moment in one's career when the theory you built is proven true. Awesome.

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Elon Musk Is About To Launch The Heaviest Rocket In Existence — And Yes, It Can Reach Mars

Elon Musk Is About To Launch The Heaviest Rocket In Existence — And Yes, It Can Reach Mars | Good news from the Stars | Scoop.it
This one ship is the equivalent of 15 Boeing 747s bundled together and running at full power.
Guillaume Decugis's insight:

Space X latest version of the Falcon rocket will be no less than the heaviest rocket in existence, coming only third to Saturn V and the Russian Energia rocket in history. 

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We Need To Get More Comfortable With People Dying In Space

We Need To Get More Comfortable With People Dying In Space | Good news from the Stars | Scoop.it

It would be wonderful if nobody died in our efforts to explore space. But building a program around that goal is no way to accomplish anything of note.

Guillaume Decugis's insight:

It's safer to be an astronaut than a mountaineer or a navy pilot.


We need to change that and go back to the days where there was not only risk but reward.  In this article, Mollie Hemingway argues that the space shuttles deadly accidents were hard to accept not per se but because they seemed to be having had trivial objectives. 


It's great to see arguments piling up for that debate. And it's also important to remember that the greatest risk might be not to take any.

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Vincent Lieser's curator insight, February 5, 2014 4:31 PM

There is no solar-system-wide civilisation if it's risk-free.

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Chandra helps confirm evidence of jet in Milky Way’s black hole | Astronomy.com

Chandra helps confirm evidence of jet in Milky Way’s black hole | Astronomy.com | Good news from the Stars | Scoop.it

Astronomers have finally identified a jet in Sagittarius A*, the supermassive black hole at the center of the Milky Way.

Guillaume Decugis's insight:

This is a fascinating discovery...

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Meet Earth's Older Cousin

Meet Earth's Older Cousin | Good news from the Stars | Scoop.it
NASA's Kepler mission has confirmed the first near-Earth-size planet in the “habitable zone” around a sun-like star.
Guillaume Decugis's insight:
The search for an earth-like planet is making fast progress as our capacity to observe planets increases.
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Signs of Alien Life Will Be Found by 2025, NASA's Chief Scientist Predicts

Signs of Alien Life Will Be Found by 2025, NASA's Chief Scientist Predicts | Good news from the Stars | Scoop.it

Solid signs of alien life will be spotted within 10 years, and definitive evidence will roll in within 20 to 30 years, NASA chief scientist Ellen Stofan said Tuesday (April 7).

Guillaume Decugis's insight:

Bold statement but NASA Chief says we know where to look and we know how to look.

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Why Europe's Experimental Spaceship Is Shaped So Weirdly

Why Europe's Experimental Spaceship Is Shaped So Weirdly | Good news from the Stars | Scoop.it
Yesterday, an unmanned experimental spacecraft from the European Space Agency took off from French Guiana and, 100 minutes later, splashed down into the Pacific Ocean just west of the Galapagos Islands.
Guillaume Decugis's insight:
The quest for the ultimate reusable spaceship is far from over when you see how different this concept is from SpaceX's reusable rockets.
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The Fastest Stars in the Universe May Approach Light Speed

The Fastest Stars in the Universe May Approach Light Speed | Good news from the Stars | Scoop.it
Merging black holes can fling stars out of galaxies at near the speed of light.
Guillaume Decugis's insight:
But don't count on it yet as a means of locomotion.
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We All Might Be Living in an Infinite Pixelized Hologram

We All Might Be Living in an Infinite Pixelized Hologram | Good news from the Stars | Scoop.it
Quarks and leptons, the building blocks of matter, are staggeringly small—less than an attometer (a billionth of a billionth of a meter) in diameter. But zoom in closer—a billion times more—past zeptometers and yoctometers, to where the units run out of names. Then keep going, a hundred million times smaller still, and you finally hit bottom: This is the Planck length, the smallest possible unit in the universe. Beyond this point, physicists say, the very notion of distance becomes meaningless.
Guillaume Decugis's insight:

Are quanta and the planck constant signs that our universe is pixelized?

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Europe makes space history as Philae probe lands on comet

Europe makes space history as Philae probe lands on comet | Good news from the Stars | Scoop.it
BERLIN/FRANKFURT (Reuters) - The European Space Agency (ESA) landed a probe on a comet on Wednesday, a first in space exploration and the climax of a decade-long mission to examine up close the remnants
Guillaume Decugis's insight:

It's not everyday that Europe makes space history. Happy and proud. 

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Theoretical physics: The origins of space and time

Theoretical physics: The origins of space and time | Good news from the Stars | Scoop.it

Many researchers believe that physics will not be complete until it can explain not just the behavior of space and time, but where these entities come from.



Via Dr. Stefan Gruenwald
Guillaume Decugis's insight:

A recap on the unifying theories that could explain the fabric of our universe.

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Tekrighter's curator insight, June 25, 2014 9:36 AM

Gravity as thermodynamics reinforces the idea of gravity as an emergent property of space-time...

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NASA Reveals Latest Warp-Drive Ship Designs

NASA Reveals Latest Warp-Drive Ship Designs | Good news from the Stars | Scoop.it
Look at the picture above. Nope, it’s not a snapshot of a Star Wars scene, or any other sci-fi movie. It’s what you get if you combine a NASA physicist working on achieving faster-than-light travel with a 3D artist, and the result is freaking AWESOME. And yes, you heard correctly, there are scientists working on faster-than-light travel, and this is what the ship could look like in the future.
Guillaume Decugis's insight:

Beyond the click bait graphic, I recommend to watch the video: it's awesome and explains in very simple terms the concept and challenges of FTL travel based on the warp drive theory. Plus some othee more accessible discoveries that could change space exploration sooner. 

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The first habitable exoplanet

The first habitable exoplanet | Good news from the Stars | Scoop.it
Sifting through observations from tens of thousands of distant stars, astronomers say they have discovered the first definitive Earth-sized planet that orbits in a habitable zone where water could exist in liquid form — a necessary condition for...
Guillaume Decugis's insight:
Meet Kepler-186f, the most 'Earth-like' planet ever: roughly the same size and in that area of its system where water - and therefore life as we know it - can exist in liquid form. It's not millions of light-years away but it would still take some generations to cruise there even at he speed of light.
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This Nature video explains why the recent big bang evidence discovery is such a big deal

Scientists from the Centre for Astrophysics have found evidence of gravitational waves created mere moments after the dawn of the Universe. These waves were created in a period of rapid expansion called cosmic inflation. This new evidence could prove the definitive confirmation of the inflation theory. It seems that finally, scientists can claim to understand the goings on at the beginning of everything.

Guillaume Decugis's insight:

The recent discovery of the first direct evidence of cosmic inflation is a big deal: until now, the Big Bang has only been a theory.


Until now.

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60,000 miles up: Space elevator could be built by 2035, new study says

60,000 miles up: Space elevator could be built by 2035, new study says | Good news from the Stars | Scoop.it

Imagine a ribbon roughly one hundred million times as long as it is wide. If it were a meter long, it would be 10 nanometers wide, or just a few times thicker than a DNA double helix. Scaled up to the length of a football field, it would still be less than a micrometer across — smaller than a red blood cell. Would you trust your life to that thread? What about a tether 100,000 kilometers long, one stretching from the surface of the Earth to well past geostationary orbit (GEO, 22,236 miles up), but which was still somehow narrower than your own wingspan?


Via Dr. Stefan Gruenwald
Guillaume Decugis's insight:

Hundreds of challenges remain to be solved but as even NASA struggles to maintain an edge, the pay-off of a Space Elevator has never been clearer. The original idea of Konstantin Tsiolkovsky which Arthur C. Clarke turned into a novel could be the revolution space exploration needs.

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aanve's curator insight, March 7, 2014 9:38 PM
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Laura E. Mirian, PhD's curator insight, March 9, 2014 12:49 AM

Think I will pass on this

Linda Liem's curator insight, March 9, 2014 8:06 AM

Science fiction may be coming true.

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Is the Universe made of math?

Is the Universe made of math? | Good news from the Stars | Scoop.it
BROOKLYN, N.Y. — Scientists have long used mathematics to describe the physical properties of the universe. But what if the universe itself is math?
Guillaume Decugis's insight:
Yes: how about considering things the other way around? If cosmologist Max Tegmark's intuition is true this physicist says we can potentially understand all of it. But as he puts it, 'If My Idea Is Wrong, Physics Is Ultimately Doomed'
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