A 3-D printer intended for the International Space Station has passed its NASA certifications with flying colors—earning the device a trip to space sooner than expected. The next Dragon spacecraft, scheduled to launch in August, will carry the Made In Space printer on board.
“Passing the final tests and shipping the hardware are significant milestones, but they ultimately lead to an even more meaningful one – the capability for anyone on Earth to have the option of printing objects on the ISS. This is unprecedented access to space,” stated Made In Space CEO Aaron Kemmer.
This 3-D printer will be the first to be used in orbit. Officials have already printed out several items on the ground to serve as a kind of “ground truth” to see how well the device works when it is installed on the space station. It will be put into a “science glovebox” on the International Space Station and print out 21 demonstration parts, such as tools.
“The next phase will serve to demonstrate utilization of meaningful parts such as crew tools, payload ancillary hardware, and potential commercial applications such as cubesat components,” Made In Space added in a statement.
Once fully functional, the 3-D printer is supposed to reduce the need to ship parts from Earth when they break. This will save a lot of time, not to mention launch costs, the company said. It could also allow astronauts to manufacture new tools on the fly when “unforeseen situations” arise in orbit.
Another NASA 3-D printer contract, given to the Systems & Materials Research Cooperation, could lead to a device to manufacture food for crew members.
Wow ! Some people want free advertisement on my website but don’t have the decency to check my advertisers, so I can make money Too. So UnAmerican !!! 1
According to a puzzling report, a new thruster design appears to be able to accelerate a craft without the use of propellant (Image: Cannae)
A NASA study has recently concluded that the “Cannae Drive,” a disruptive new method of space propulsion, can produce small amounts of thrust without the use of propellant, in apparent discordance with Newton’s third law. According to its inventor, the device can harness microwave radiation inside a resonator, turning electricity into a net thrust. If further verified and perfected, the advance could revolutionize the space industry, dramatically cutting costs for both missions in deep space and satellites in Earth orbit.
The basic principle behind space propulsion is very simple: for every action, there is an equal and opposite reaction. Use a rocket engine to throw mass one way, get propelled the other way. And according to the law of conservation of momentum, the more mass you throw behind you and the faster you throw it, the stronger your forward thrust will be.
One consequence for space travel is that, to counter Earth’s gravity and reach orbital velocity, rockets need to carry a very large amount of propellant: For instance, in the now-retired Space Shuttle, the mass of the fuel was almost twenty times greater than the payload itself. In satellites the impact is smaller, but still very significant: for geostationary satellites, fuel can make up as much as half the launch weight, and that makes them more expensive to launch and operate.
But now, a NASA study has concluded that a new type of spacecraft propulsion is able to generate thrust without propellant. This appears to violate the law of conservation of momentum: in other words, if no mass (fuel or otherwise) is being ejected from the system, where is the thrust coming from? Where is the equal and opposite reaction?
According to its inventor, US scientist Guido Fetta, the thruster works as a resonating cavity for microwave radiation. The cavity redirects the radiation pressure to create an unbalanced force, and that force produces a net thrust.
In its study NASA didn’t attempt to explain the phenomenon, and instead contented itself with verifying that the system did indeed generate a small amount of thrust, between 30 and 50 micro-Newtons. This is a tiny amount, only enough to levitate a mass of three to five milligrams (a few eyelashes) here on Earth; but, astonishingly, it is a net thrust nonetheless.
“Test results indicate that the RF resonant cavity thruster design, which is unique as an electric propulsion device, is producing a force that is not attributable to any classical electromagnetic phenomenon and therefore is potentially demonstrating an interaction with the quantum vacuum virtual plasma,” the study concludes.
The system has many striking similarities with the EmDrive, designed by British aerospace engineer Roger Shawyer, although the explanation that Shawyer provides for the working mechanism is quite different from Fetta’s or NASA’s.
According to one peer-reviewed paper, the EmDrive thruster was able to produce 720 mN of thrust from an electricity input of 2.5 kW (Photo: EmDrive)
“At first sight the idea of propulsion without propellant seems impossible,” says Shawyer. “However, the technology is firmly anchored in the basic laws of physics and following an extensive review process, no transgressions of these laws have been identified.”
According to Shawyer, the thruster works because of relativistic effects: the microwaves are moving at a significant fraction of the speed of light at both ends of the resonator, and so, he claims, the resonator and the microwaves have two separate frames of reference, with the two forming an open system that ultimately doesn’t violate the laws of physics, conservation of momentum included.
The interesting thing about EmDrive is that, back in 2009, a Chinese peer-reviewed journal tested Shawyer’s thruster design, registering 720 mN of thrust at an input power of 2.5 kW. That’s enough to make a tennis ball hover, and then some; in fact, if the results are confirmed, such levels of thrust would already be practical for satellitar applications.
Salient characteristics of the EmDrive compared to a more conventional ion propulsion system (Image: EmDrive)
The system could generate electricity from solar panels, and because it is much lighter than current thrusters, it could more than halve the weight launch of satellites, leading to very significant reductions in launch costs. A practical microwave thruster could also meaningfully extend the lifetime of satellites and pave the way for deep space robotic missions.
Even beyond that, Shawyer claims that the second generation of his fuel-less thrusters, based on superconductor technology, will be capable of producing an impressive specific thrust of 30 kN per kW of input energy. “Thus for 1 kilowatt (typical of the power in a microwave oven) a static thrust of 3 tonnes (3.3 tons) can be obtained, which is enough to support a large car. This is clearly adequate for terrestrial transport applications.”
But before we start talking Sun-powered flying cars and weekend trips to Pluto, the scientific community will undoubtedly need to dissect the experiment with great care and independently verify whether the tiny net thrust reported by NASA could after all be attributed to some external cause that the researchers didn’t account for.
The world’s largest heat shield, measuring 16.5 feet in diameter, has been successfully attached to the Orion spacecraft. The heat shield is made from a single seamless piece of Avcoat ablator. It will be tested on Orion’s first flight in December 2014 as it protects the spacecraft from temperatures reaching 4000 degrees Fahrenheit.
The uncrewed flight, dubbed Exploration Flight Test-1(EFT-1), will test the spacecraft for eventual missions that will send astronauts to an asteroid and eventually Mars.
The Orion crew module for Exploration Flight Test-1 is shown in the Final Assembly and System Testing (FAST) Cell, positioned over the service module just prior to mating the two sections together. The FAST cell is where the integrated crew and service modules are put through their final system tests prior to rolling out of the Operations and Checkout Building at NASA’s Kennedy Space Center in Florida. Technicians are in position to assist with the final alignment steps once the crew module is nearly in contact with the service module. In December, Orion will launch 3,600 miles into space in a four-hour flight to test the systems that will be critical for survival in future human missions to deep space.
(Phys.org) —All eyes are on ESA’s spaceplane to showcase reentry technologies after its unconventional launch on a Vega rocket this November
Instead of heading north into a polar orbit – as on previous flights – Vega will head eastwards to release the spaceplane into a suborbital path reaching all the way to the Pacific Ocean.
Engineers are forging ahead with the final tests on ESA’s Intermediate experimental Vehicle, IXV, to check that it can withstand the demanding conditions from liftoff to separation from Vega.
Launched in early November, IXV will flight test the technologies and critical systems for Europe’s future automated reentry vehicles returning from low orbit. This is a first for Europe and those working in the field are keeping a close watch.
The research and industrial community have the chance to use this information for progress in atmospheric reentry, oriented towards transportation systems with applications in exploration, science, Earth observation, microgravity and clean space.
Jose Longo, ESA’s head of aerothermodynamics, said, “The technical advancements that have been made since the first experiments with our Atmospheric Reentry Demonstrator in 1996 are huge.”
“This is the first flight demonstration of features such as highly advanced thermal structures: thrusters and flaps that are part of the control system, and the 300 sensors and infrared camera to map the heating all along the spacecraft from the nose to the flaps. These things just cannot be tested in the same way in laboratories.”
“The fact that ESA’s IXV will be launched on Vega makes this a fully European mission,” noted Stefano Bianchi, ESA’s head of launchers development.
IXV weighs almost two tonnes, close to Vega’s lifting capacity, and will be a tight fit inside the vehicle’s fairing.
“In this mission we are not only monitoring the spacecraft all along its autonomous flight, but also tracking its progress back to Earth to a particular spot – this is different to what we are used to,” said Giorgio Tumino, ESA’s IXV project manager.
When IXV splashes down in the Pacific at the end of its mission it will be recovered by ship and returned to Europe for detailed analysis to assess the performance and condition of the internal and external structures.
The actual performance will be compared with predictions to improve computer modeling of the materials used and the spaceplane’s design.
Such is the enthusiasm and interest of industry in the opportunities associated with reentry technologies that the third IXV workshop in ESA’s Technical Centre, ESTEC, in Noordwijk, the Netherlands was packed out last week.
“It is very encouraging to see such interest in this program,” added Giorgio. “Follow-up activities to this mission will build on the current industrial organization and associated technologies will provide opportunities to newcomers.”
The tractor beam featured in popular science fiction movies and shows such as “Star Trek,” “Star Wars,” and even the sci-fi parody film “Spaceballs,” is a fictional device that is steadily progressing towards solid reality.
On screen, the tractor beam is a beam of light or energy that is used to hold or manipulate the trajectory of another object. In “Star Trek,” the tractor beam is often used by the starship Enterprise to capture or tow other ships.
With the advancement of lasers and other technology, scientists have been optimistically hustling to create this kind of technology and a variety of different approaches have been tested in the laboratory.
One of the more recent developments involves using an ultrasound beam to pull small, hollow, triangular objects back towards the source of the beam. It’s been developed by Scottish scientists and physicists at Dundee University.
“We were able to show that you could exert sufficient force on an object around centimeter [about 0.4 inches] in size to hold or move it, by directing twin beams of energy from the ultrasound array towards the back of the object,” said Dr. Christine Demore of the Dundee University’s Institute for Medical Science and Technology told the Daily Mail Online.
Although the device is far from the pulling power of the U.S.S. Enterprise or the Death Star, it can still pull objects a million times larger than previous tractor beam designs that specialize in pulling or sorting particles, and it works with a billion times more force.
The practical uses for such a device include medical applications and cancer treatment. For example, using this technology, a capsule could be gently moved towards the site of a tumor and strategically released.
NASA, on the other hand, has been working with tractor beams for a few years now. Back in 2011, NASA’s Office of the Chief Technologist (OCT) received a relatively large grant to study and develop three methods of using lasers to collect particles, trap them, and deposit them were needed for analysis. The process is nearly identical in use to Star Trek’s tractor beam. However, these tractor beams at this time can only manipulate small particles.
We may never see practical time travel in our lifetimes, if it’s possible at all. However, a team at the University of Queensland has given the Doc Browns of the world a faint glimmer of hope by simulating time travel on a very, very small scale. Their study used individual photons to replicate a quantum particle traveling through a space-time loop (like the one you see above) to arrive where and when it began. Since these particles are inherently uncertain, there wasn’t room for the paradoxes that normally thwart this sort of research. The particle couldn’t destroy itself before it went on its journey, for example.
As you might have gathered from the “simulation” term, sci-fi isn’t about to become reality just yet. The scientists haven’t actually warped through time — they’ve only shown how it can work. It could take a long time before there’s proof that whole atoms and objects can make the leap, let alone a real-world demonstration. Should you ever step into a time machine, though, you’ll know where it all started… and ended.
After traveling for 37 years, Voyager I is recording pulses from the sun that confirm it has entered a different region near the edge of the solar system called interstellar space.
NASA’s Voyager I spacecraft has been steadily journeying away from the sun to the outer reaches of the solar system since its 1977 launch. As it travels farther out and enters a different region of the solar system, it’s occasionally affected by coronal mass ejections — shock waves caused from massive violent eruptions from our sun.
There have been three of these space “tsunamis” since 2012, and the third one — described by NASA on Monday — has helped the space agency confirm something it posited in late 2013: that Voyager is the first Earth craft to travel into interstellar space.
Interstellar space is the area just beyond the reach of what’s known as our heliosphere: an area where the solar wind pushes back the dense plasma of space in a sort of protective bubble. This plasma was ejected into the universe by the death of stars millions of years ago.
The plasma outside the heliosphere is about 40 times denser than the plasma that lies inside it. By using its 37-year-old cosmic ray and plasma wave instruments, Voyager has sent back signals to Earth that prove it has popped through our sun’s protective bubble and is now moving through the thicker plasma. Scientists can tell this is the case because the thicker plasma in interstellar space oscillates at a faster rate than less dense plasma and produces a different frequency when hit by the sun’s shock waves.
“The tsunami wave rings the plasma like a bell,” Ed Stone of the California Institute of Technology , the mission’s project scientist since 1972, said in NASA’s statement. “While the plasma wave instrument lets us measure the frequency of this ringing, the cosmic ray instrument reveals what struck the bell — the shock wave from the sun.”
“Normally, interstellar space is like a quiet lake,” Stone added. “But when our sun has a burst, it sends a shock wave outward that reaches Voyager about a year later. The wave causes the plasma surrounding the spacecraft to sing.”
Ruvkun said he believes we’ll have the technology to store the human genome in bacteria within a decade or two. The trickier part is programming instructions into the bacteria that will tell them what to do once they reach their destination.
“If we could also send along assembly instructions, for the bacteria to produce an array of descendent organisms that assemble the genome segments over some time period into a human, it is a way to ‘print’ humans remotely,” Ruvkun told The Huffington Post in an email.
Just as the human egg cell is programmed by our DNA to divide, replicate and develop into a human, so bacteria could be programmed by our DNA to do the same thing, Ruvkun explained.
“This is far beyond our ability to program bacteria,” he added. “Now. But 1,000 years from now, we will be able to do it. One thousand years is a blink in a 4 billion year timescape.
Just a blink. And humans are relatively young in the vast timeline of our universe. If you let your mind run wild, you might even wonder whether weare the product of tiny bacteria someone else programmed to colonize Earth, Ruvkun said.
“Perhaps Earth was terraformed in this way,” Ruvkun said in the email. “More likely, we are a big mistake and the cute little puppy dogs that should have dominated the Earth have been trumped by a glitch called humans.”
August 10, 2009–Planet SMASH! A celestial body about the size of our moon collides with a planet roughly the size of Mercury in a new artist’s conception. Scientists think a scene like this played out just a few thousand years ago around a young star called HD 172555.NASA’s Spitzer Space Telescope recently detected the signatures of vaporized and melted rock along with rubble around the star, about a hundred light-years from Earth. Debris from a similar giant impact between Earth and a Mars-size body is thought to have created our moon about 30 to 100 million years after the sun formed.
—Image courtesy NASA/JPL-Caltech
LIFE IS REARRANGED
Star date 05-15-2014 I had a massive heart attack . In medical terms the Doctors and the Nurses called it the Widow Maker. Yes I was on my way to see Mama and Them. I eventually survived with a pace maker place just below my Collier Bone . I was released during the Memorial Weekend .
On Memorial Day evening I had swollen up to 40 lbs. more than my normal weight. I had retained that much water and had shortness of breath again. Oh well,back to the hospital. At fist the doctors weren’t sure what was causing the shortness of breath and the swelling in my legs and feet. Finally it was pneumonia on my left lung.
Star Date 05-30-2014 I was released to my home and glad to be here. I have an army of doctors and doctor visits upcoming .
I am written you to tell you that I worked out for years 4 to 5 days a week and had no signs of danger aware of until it happen. I was being treated for another condition that was it. I had not had an EMG in over 4 years. You probably think I am just rambling on but ,THE EMG WAS THE MOST IMPORTANT PART TO THIS STORY. PLEASE LADIES AND GENTS TELL YOUR DOCTOR TO INCLUDE AN EMG TO YOUR BREIF OFFICE VISITS IT MAY SAVE YOUR LIFE.
How would you like to journey through space for a quick tour of all those alien worlds astronomers have discovered?
No spaceship, you say? No worries. An enterprising graduate student at the University of Leicester in England has created an amazing new exoplanet video that lets you fly by 1,774 extrasolar planets in 1,081 star systems–all from the comfort of your favorite chair.
There is a vast range of different time-scales on which exoplanets orbit their host stars, from things which orbit at many times the separation of the Earth and Sun over many hundreds of years, right down to planets which orbit so close to their star that they complete each orbit in just a few hours. It fascinating just how much these exoplanetary systems differ from our own system in scale.
To date, there are 1,776 confirmed exoplanets and 1,082 planetary systems.