A team has, for the first time, discovered how to produce ultra-thin “diamond nanothreads” that promise extraordinary properties, including strength and stiffness greater than that of today’s strongest nanotubes and polymer fibers. Such exceedingly strong, stiff, and light materials have an array of potential applications, everything from more-fuel efficient vehicles or even the science fictional-sounding proposal for a “space elevator.”
Posted in business, geopolitics, policy, space, treaties
According to international treaties, no country is allowed to own things like moons or asteroids. But what about a company?
A new bill would allow space mining companies to own pieces of space. Although they couldn’t own a whole asteroid, for example, the bill would ensure that space mining businesses would legally own the resources they extract from that asteroid.
Last week the bill passed in the Senate with a few amendments, and yesterday those amendments were accepted in the House of Representatives. Now the bill is off to the Oval Office, where space policy experts predict President Obama will sign it into law.
It’s made of just 244 atoms.
In the nearly 400 years since the first submarine was invented, these underwater machines have become incredibly sophisticated. They’re armed and they’re really stealthy. We’re even planning on sending subs to oceans on distant moons. Trippy.
But now, a submarine is going where no submarine has gone before. To the molecular level. In a paper published this month in NanoLetters, researchers announced that they’ve invented a submarine so small that it’s made out of a single molecule.
The submarine is made of just 244 atoms, and can move through fluids with molecules of approximately the same size all around it.
Futurist Christopher Barnatt is the author of two 3D printing books, and is well known in the 3D printing community. His latest book — “The Next Big Thing: From 3D Printing to Mining the Moon” — covers far more than additive manufacturing. But as “3D Printing” is in the sub-title, we thought we’d ask him what it is all about.
3Ders: “The Next Big Thing” is a very broad title, so can you tell us what the book covers?
It may hurt your brain to think about it, but it appears that the answer is possibly to be yes, or at least the numbers are almost in the same ballpark.
Astrophysicists in fact set out to answer this question about a decade ago. It’s a complicated problem to solve, but it’s somewhat easier if you throw in a couple of qualifiers — that we are talking about stars in the observable universe; and grains of sand on the whole planet, not just the seashores.
The researchers started by calculating the luminosity density of a section of the cosmos — this is a calculation of how much light is in that space. They then utilized this calculation to guess the number of stars needed to make that amount of light. This was quite a mathematical challenge!
“You have to suppose that you can have one type of star signify all types of stars,” says astrophysicist Simon Driver, Professor at the International Centre for Radio Astronomy Research in Western Australia and one of the researchers who worked on the question.
“Then let’s suppose, on average, this is a normal mass star that gives out the normal amount of light, so if I know that a part of the universe is producing this amount of light, I can now say how many stars that would associate to.”
Now armed with a guess of the number of stars within a section of the cosmos, the next challenge was to work out the size of the cosmos. Given we know that the cosmos is 13.8 billion years old, we can suppose that we exist in a sphere 13.8 billion light years in volume. But there’s a catch: the universe is possibly immeasurable in size.
Planet dwellers like us naturally look first to other moons and planets for colonization. Yet, asteroids have enough resources to build space habs for trillions, with the same living space per person as for Earth.
The idea is to use the materials from the asteroids and NEOs to make new habitats. This gives far more living space than the amount you get if you hollow asteroids out, and live inside them.
The Moon and Mars are our only choices for surface colonization in the near future. Neither is a second Earth; both have many issues at present, especially, the almost total lack of atmosphere. Technically, Mars does have an atmosphere, true, enough for winds and dust storms, but it is so thin it would count as a laboratory vacuum on Earth.
Meet Amun 3554. Doesn’t look like much, right? Little more than a mile wide, it’s one of the smallest M-class (metal-bearing) asteroids yet discovered. Unless it ever decides to smash into us — a theoretical possibility, but extremely unlikely over the next few centuries — it will continue orbiting the sun, unknown and unmolested.
That is, unless Planetary Resources has its way. Planetary Resources is the asteroid-mining company launched Tuesday in Seattle, with backing from Microsoft and Google billionaires, along with the equally prominent James Cameron and Ross Perot Jr.
Its object is to completely dismember poor little rocks like Amun.
NASA has released a new image depicting the most “powerful eruption” to have occurred since the Big Bang.
The explosion, which took place ten years ago, is thought to be one of the biggest to happen since the Big Bang.
Although the eruption was spotted in 2005, the latest images exposes the full power of the event.
We’ve said it before: Mars’ moon Phobos is doomed. But a new study indicates it might be worse than we thought.
One of the most striking features we see on images of Phobos is the parallel sets of grooves on the moon’s surface.
They were originally thought to be fractures caused by an impact long ago. But scientists now say the grooves are early signs of the structural failure that will ultimately destroy this moon.
Called the “Great Dark Lane” by the astronomers who announced it, the dusty road twists in front of the bulge of the galaxy. “For the first time, we could map this dust lane at large scales, because our new infrared maps cover the whole central region of the Milky Way,” Dante Minniti, a researcher at Universidad Andres Bello in Chile and lead author of a study describing the findings, told Space.com by email. “It is very difficult to mapthe structure of our galaxy because we are inside, and it is very large and covered with dust clouds that are opaque in the optical,” Minniti said.
