Space

I'm in search of a new phrase to replace "pie in the sky" to describe the latest ambitious space mining startup. On its face, the notion of 3D printers on asteroids seems more ridiculous to me than a simple lemon meringue in the clouds, and yet that is exactly what the just-launched venture Deep Space Industries (DSI) proposes to do.

Less than a year after Planetary Resources announced its own plans to mine asteroids in space, DSI is upping the ante with its own vision for zero-gravity resource extraction that goes one step further to include actually producing things in space using the company's "MicroGravity Foundry... a patent-pending breakthrough in 3D printers able to output complex metal components using a simple process with few moving parts."

The idea is that it should be much cheaper and more efficient to build what's needed to further space exploration using resources extracted from asteroids than shuttling materials from Earth. Imagine sending a robot into a mountain with some mining tools and a 3D printer. The robot mines material to feed into the 3D printer, which prints up more robots and supplies to build a smelter at the mouth of the mine, which is then used to build even bigger things. You get the idea.… Read more

I love it when engineers show off.

NASA scientists, having apparently nothing better to do, have shot an image of the Mona Lisa to the moon by piggybacking it on laser pulses. Leonardo da Vinci's masterpiece was successfully received by an instrument aboard the agency's Lunar Reconnaissance Orbiter (LRO) some 240,000 miles away.

"This is the first time anyone has achieved one-way laser communication at planetary distances," MIT's David Smith, head of the spacecraft's Lunar Orbiter Laser Altimeter (LOLA), said in a release.

"In the near future, this type of simple laser communication might serve as a backup for the radio communication that satellites use. In the more distant future, it may allow communication at higher data rates than present radio links can provide." … Read more

Doomsday isn't far from many people's imaginations, whether it's the end of the Mayan calendar, the rapture, or a massive asteroid smashing into the Earth. Now, one of these far-flung scenarios may become even less likely.

The European Space Agency announced this week that it's in the beginning phases of an "Asteroid Impact and Deflection Mission" with its U.S. partner Johns Hopkins Applied Physics Laboratory. The eventual goal of the mission is to verify whether scientists can collide with an asteroid that's hurtling through space -- so as to avoid any possible … Read more

It's one of the biggest film franchises of all time. It's also one of the biggest merchandising franchises of all time. It's spawned dozens of novels, countless comic books, spoofs, video games, and even was responsible for the name of a controversial military defense system.

We're talking about "Star Wars," of course, George Lucas' mammoth empire that started back in the early-1970s as a much, much smaller creation. But don't think that Lucas didn't have big ideas. From the earliest days of working on the script of his sci-fi space opera, the &… Read more

Canadian astronaut Chris Hadfield is known for playing his guitar in zero gravity on the International Space Station. To keep his fingers in playing shape, he has to keep his nails clipped. Down here on Earth, that's no problem -- you just grab some clippers and go at it. In space, it's a little more complicated.

Hadfield demonstrates his trimming method in a video released by the Canadian Space Agency. The first step is to procure a nail clipper. This is just like our Earth nail clippers, except it has Velcro on it to keep it from floating around and bumping into astronauts or machinery.… Read more

Poor President Obama. Not only does he have to deal with Congress, now he's also the target of some interstellar smack talk coming from none other than the Galactic Empire.

Recently, the White House responded to a petition on its "We the People" Web site calling for the federal government to construct an actual Death Star. 

The answer was a definitive no, citing budgetary constraints and the administration's opposition to blowing up planets.

"It is doubtless that such a technological terror in the hands of so primitive a world would be used … Read more

The Curiosity Mars rover has found intriguing veined rocks just below tilted cross-bedded layers that indicate water once flowed and "percolated" through fractured terrain near the landing site in Gale Crater, scientists said today. The discovery provides additional evidence of a watery past on the Red Planet.

Taking their time evaluating a surprising variety of scientific targets, mission scientists and engineers now are gearing up for the first tests of a powerful impact drill that will be used to collect samples from inside targeted rocks.

The drill tests are a final major milestone before the rover begins creeping … Read more

You're onboard the Millennium Falcon. You give the command to jump to lightspeed. The stars outside turn into long streaks of light and you're off. It's one of the most memorable images of sci-fi space travel ever created. It's also likely to be pretty far from reality, according to a study by a group of students from the U.K.'s University of Leicester.

The study, titled "Relativistic Optics Strikes Back," was published in the University of Leicester's Journal of Physics Special Topics. You can indulge in all the delicious physics equations in the abstract.

The physics students started by imagining that the Millennium Falcon has accidentally wandered into our solar system, on a direct course for our sun. If it then engaged in near-lightspeed travel, the stars around it wouldn't appear to stretch out. Instead, it would look more like a disc of light.… Read more

You and I are really, really small. And we're even smaller than we thought we were last month, at least when compared with the size of the largest known item in the universe.

Last week, a team of astronomers based in the U.K. discovered the largest object in all of our observable existence: a celestial structure made up of 73 quasars that is up to 4 billion light years long.

How big is that exactly? Well, it would take tens of thousands of our own Milky Ways -- the big, galactic one, not the one that comes in … Read more