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The US Office of Naval Research has successfully flown a drone for two entire days using a tank filled with liquid hydrogen. The previous experiment used a hydrogen fuel cell as its power source, flying for a then record time of 26 hours.
The new test used a cryogenic storage tank filled with liquid hydrogen, flying for 48 hours, breaking the previous record by nearly an entire day. We should expect this technology to continue to impress, just give it a few more years.
Yesterday, astronauts on the International Space Station (ISS) discovered an ammonia leak in a coolant loop that cools the power system attached to one of the large solar arrays on the ISS. NASA officials say that the crew of six is in no danger and that this leak will most likely result in the array being shut down until the leak is fixed.
This same system has had leaks before, in 2007 a leak in the same spot was discovered, but was much smaller then and was such that it did not warrant an immediate repair. It was so small that the system was recharged with just eight pounds of ammonia in 2011 during a visit from the Space Shuttle Endeavor. Last November, an attempt to repair the leak was made during spacewalks made by NASA astronaut Sunita Williams and Japanese space flyer Akihiko Hoshide. The fix was only temporary though and now it has reared its ugly head again.
"It is a serious situation, but between crew and experts on the ground, it appears to have been stabilized. Tomorrow we find out for certain," space station commander Chris Hadfield of Canada wrote Thursday via Twitter, where he posts updates as @Cmdr_Hadfield.
This morning Google and Time released the culmination of a project in which they teamed up with NASA and the US Geological Survey to produce a historical perspective on how Earth has changed over the past 30 years.
The project takes satellite imagery produced by the LandSat program and stitches them together removing clouds and haze to produce animated GIF images of how a region has changed over the past three decades. The Time.com hosted site features a handful of pre-chosen sites such as the Amazon Rainforest, Las Vegas, Dubai, Mendenhall Glacier and the Oil Sands fields in Russia.
The project consists of literally millions of individual images taken by the LandSat satellites that have been orbiting Earth at an altitude of over 400 miles since the 1970's. The project began in 2009 when Google began working with the USGS to make the entire archive of LandSat imagery available to the public.
NASA has decided to get rid of their Windows-powered notebooks on the International Space Station (ISS) and replace with them with Linux-powered counterparts. On top of this, the first humanoid robot in space, R2, is powered by Linux.
Keith Chuvala, who has quite a mouthful of titles, is a United Space Alliance contractor, manager of the Space Operations Computing (SpOC) for NASA, and leader of the ISS's Laptops and Network Integration Teams, recently explained that NASA decided to move away from Windows, and in to the arms of Linux for the ISS's PCs. He said:
We migrated key functions from Windows to Linux because we needed an operating system that was stable and reliable - one that would give us in-house control. So if we needed to patch, adjust, or adapt, we could.
I know I'm not the only one on the TweakTown staff that loves space. I also believe many of our readers happen to be space fans following Curiosity's journey on Mars. We now have three stunning panoramic images stitched together from over 60 raw images taken by the rover. These panoramas allow a wider field of view so you can get a better sense of where Curiosity is working.
Ken Kremer, creator of the panoramas:
I chose these scenes because they vividly tell the story of what NASA seeks to accomplish with Curiosity in the search for signs of life on Mars as well as tell the science story of the entire mission at a glance - one panorama is worth a thousand words, so to speak.
The images are stunning and really give a good idea of what the red planet's horizon looks like. In two of the three panoramas, Mount Sharp rises majestically in the background. This was done on purpose, according to Kremer, because it's "a dramatic backdrop as well as being the rover's ultimate destination."
Maybe these pictures will help encourage people to sign up to live in the Mars Colony.
The Solar Impulse is a plane powered completely by the sun. Its wings, which are the size of a Boeing 747's, are covered in solar panels which generate and store electricity in batteries so the plane can fly 24/7 without ever needing to stop to refuel. The plane is currently on a journey across the United States, with the first leg being from Mountain View, CA to Phoenix, AZ.
The first leg of the journey will take about 20 hours to complete due to the plane being rather slow moving. In fact, the plane only moves at around 40 MPH. You can track the Solar Impulse on its journey via the live stream and site set up by the creators. The stream shows a Google Earth view of the terrain below the plane, while the site has current speed, direction, temperature, engine settings, and battery status.
Happy Friday, everyone! Time to get your geek on. Google has released a new "Explorer Story" video in which a physics teacher heads 500 feet underground to tour the Large Hadron Collider, all the while teaching to a physics class thousands of miles away. How awesome!
The video really speaks for itself. But just in case it doesn't, Andrew Vanden Heuvel, the star of the video, has authored a blog post with his thoughts and experiences. I know that I can't wait to buy my own pair of Google Glass.
The video you are about to see was not created in CGI, nor does it use any of Hollywood's video trickery. Scientists at IBM's Almaden Research Lab in San Jose, CA, have figured out a way to precisely move and manipulate individual atoms in very precise ways. So precise, in fact, that they were able to film the world's smallest video using nothing but the building blocks of all matter.
When it comes to the things I love, the video above is about as high on the list as it gets. The simple fact that we have the technology to now take an individual atom and place it anywhere in space that we want is simply astounding, when you consider the fact that less than 100 years ago we had no idea that atoms even existed. To get a scale of what is going on here, each dot has been magnified about 100,000,000 times.
The video was made by using a scanning tunneling microscope that weighs as much as a full sized truck and operates at -268 degrees Celsius. The positioning of the atoms was achieved by moving a very tiny needle across the surface of a piece of copper the size of a postage stamp with a height from the surface of just one nanometer.
Everybody's favorite little rover, Curiosity, is back in contact with its handlers on Earth, now that Mars and Earth are in an alignment where communication is possible. Curiosity had previously been sitting mostly idle for the last four weeks while the sun blocked communications between Earth and Mars.
The first step NASA has to complete is to update Curiosity's software. After Curiosity is brought up to speed, its handlers will instruct the rover to continue analysis on Yellowknife Bay. Yellowknife Bay is the location that Curiosity has already found the basic building blocks of life.
We just didn't stumble into this area. This was something that took a lot of planning. In case something happened with the rover we needed to make sure we had science to do in that landing ellipse. What was serendipitous was landing in a past aqueous environment and finding sulfates and clays...The hope is we find some other examples of habitable environments. There are a bunch of different geological reasons why there could be more of less carbon in one place.
Eventually, scientists want Curiosity to climb up Mount Sharp.
Say we find something that looks like another attractive ancient potentially habitable environment and it's 200 meters above the base of Mount Sharp. We can go up there and then from there we can go not just upward but also downward again. So if you're looking for something, you can explore in both directions of time's arrow.
Researchers at Cern in Switzerland have some interesting things to play with, and have now proved the merits of a way to test antimatter as a source of the thing we all want to see in our futures: "anti-gravity".
Antimatter particles are the "mirror image" of normal matter, but have an opposite electric charge. Antimatter and its relationship with gravity is still a mystery, but it may just simple "fall up" rather than down. Researchers reporting in Nature Communications have made a few steps toward solving this notion.
Antimatter continues to be one of the biggest question marks in physics, where equal amounts of matter and antimatter should have been created at the Universe's beginning. But, if the two were to shake hands, they destroy each other in what is called annihilation, turning into pure light. Cern's Alpha experiment is here to help the researchers hopefully solve this.