Archive for April, 2006

When It Absolutely Positively Has to Get to Space

Friday, April 14th, 2006

Not that I’ll need that service any time soon, but apparently Masten Enterprises are the people to call if you need to send something into space. For a fee, they’ll blast your stuff into the stratosphere. There’s even a video of how it works.

The prices seem pretty reasonable at first glance. 

350 gram CanSat – $99
1 kg Custom Payload – $250
2 kg Custom Payload – $500
5 kg Custom Payload – $1250

If you’re like me you’ll need a translation. 

0.77 lbs – $99
2.20 lbs – $250
4.40 lbs – $500
11.02 lbs – $1250

Then again maybe not. Seems like a lot of money to send something ranging from the size of a soda can to a well-fed cat into space. And how do you get your stuff back once it’s up there? Or do you just send up stuff that you no longer need? And if so, this is better than throwing it away or recycling it how

It sounds like a cool idea, but unless someone can explain to me just how useful it is, my advice to anyone who has something they no longer need and want to send into space is pretty simple: hold a garage sale.

Via Make.

GPS Tracking for Parents

Thursday, April 13th, 2006

Before I had a kid of my own, I used to shake my head at parents who used "tethers," that looked like old fashioned telephone cords, to keep their toddlers from toddling off in public. Three years into parenthood, I haven’t succumbed to the "urge to tether" yet, but I’m a little less judgmental about the whole thing.

I have enough trouble keeping up with my three-year-old now. I’m already wondering how I’m going to keep up with him when he’s a teenager with enough subway fare to go where he wants. The answer is simple than I thought: GPS. If it can help find lost pets, it ought to work with kids too. So, though my little one isn’t big enough for a cell phone yet, I was relieved to read on Mobile Wireless News that Sprint just rolled a GPS-driven kid locator service for parents.

Using the Global Positioning System, the service allows parents to track up to four cell phones over the Internet or on their own wireless device. Parents can periodically ask the service to find the child’s phone, displaying the location on a road map.

Parents can also set alerts, automatically warning the parent if the child isn’t at a certain place, such as school or soccer practice, at a specific time.

The child’s phone also displays a text message, letting the child know they’ve been searched for and found.

Of course, there are other uses, like keeping track of elderly parents (as the article notes) or keeping tabs on a wandering spouse, which leads to charges that Big Brother is in the house.  I guess there’s two sides to every technology, and whether it’s used benevolently or not depends on whose pushing the buttons. But, as a parent, if kids can’t remember to be in the house when the streetlights come on, this seems like a pretty good way to remind them, when yelling down the street isn’t an option.

A Gravity Powered Plane

Thursday, April 13th, 2006

In an effort to create a truly zero-emissions vehicle, Nevada-based Hunt Aviation is exploring ways to use gravity as a powersource– for an airplane:

                                        

In order for the GravityPlane to become airborne, gas bags inside a pair of rigid, zeppelin-like structures are filled with helium from storage tanks inside the vehicle. This causes the aircraft to become lighter-than-air, and it rises from the ground. Compressed-air jets on the sides of the craft add further propulsion, pushing the vehicle skyward and decreasing the craft’s overall weight by releasing the stored air which acts as ballast. Once the craft reaches the altitude where the helium is no longer lighter than the surrounding air– theoretically as high as ten miles up– it is unable to climb any further. Some of the stored compressed air is then expanded into the dirigible areas, decreasing the buoyancy effect of the helium and starting the aircraft’s descent phase.

Hunt Aviation has a video explaining the concept of how the plane works. On one level it’s a simple idea– combining lighter-than-air technology to get the vehicle aloft and then gliding from extreme height to the destination. But the devil, as they say, is in the details, and the video reveals the technical complexity that is often involved in implementing a "simple" idea.

Commenters at this blog were relatively unimpressed by the concept. What do you think? 

Satellite Launched at Sea

Thursday, April 13th, 2006

The word from the rocket scientists in Japan is good:
 

JSAT Corporation ("JSAT"; Head office: Chiyoda-ku, Tokyo; President and CEO: Kiyoshi Isozaki) is pleased to announce that today it has successfully launched JCSAT-9 communications satellite. JCSAT-9 lifted off at 08:30 a.m. (Japan Standard Time) from a launch platform at 154º West Longitude on the Equator (approximately 2,240km south of Hawaii on sea). After this launch, JCSAT-9 was also successfully separated from its launch vehicle.

 
 

Sea Launch, an international consortium of Ukrainian, Norwegian, Russian and U.S. companies, does a great job of describing the launch sequence. And an even better job of broadcasting it (watch the video presentation).

First Light For SETI Optical Telescope

Wednesday, April 12th, 2006

The Planetary Society and Harvard physicist Paul Horowitz pointed a giant telescope at the sky for the first time yesterday, beginning a systematic search for light signals from an alien civilization. Science A-Go-Go reports:

Housed beneath a retractable roof situated high atop a wooded ridge in Harvard, the telescope isn’t what most people would expect when they visualize a powerful optical telescope. But what may look like a mish-mash of metal bars and mirrors to the uninitiated represents a truly ambitious project that would make Planetary Society founders Bruce Murray, Carl Sagan, and Louis Friedman, Executive Director of the Planetary Society, extremely proud….

[T]he powerful 72-inch SETI optical telescope pointed its giant mirror at the sky for the first time on April 11, and began a systematic search for light signals from an alien civilization.

The telescope has some impressive computer muscle behind it, with the developers claiming that it can process the equivalent of all books in print in a second. Its optical detectors are cutting edge as well, with a sensitivity that can detect a billionth-of-a-second flash of light. The formidable technology driving it should allow the new telescope to scan the entire northern hemisphere sky over the course of a year.

The Planetary Society says that the observatory represents the biggest SETI project it has ever sponsored… [D]espite many years of scanning the skies for radio signals, there has been little in the way of any definitive ET activity, hence the Society’s interest in the visible spectrum. "We have been listening for alien signals for decades," said Friedman, "it’s time we started to watch for signals as well."

It is now common among SETI advocates to argue that alien civilizations are just as likely to communicate with light signals as they are with radio waves, and not without good reason, as there are a number of advantages to using light as a form of interstellar communication. Unlike radio waves, a laser-like beam suffers little interference as it travels through space, not to mention the vast amount of data that can be transmitted using such a beam. Additionally, a laser’s unidirectional quality coupled with its brightness – capable of reaching intensities 10 times greater than the sun – make it easier for receivers to both see and track the beam to its source. And aside from the initial outlay, the optical SETI project is simpler, cheaper and will cost far less to maintain than its radio counterparts.

But one of the project’s major strengths is also one of its biggest weaknesses, because unless an extraterrestrial beam is pointed our way it is unlikely that it will be detected. But despite this limitation, the Society are happy that they are now covering yet another possible avenue of communication in their search for alien civilizations.

 

Happy Anniversary

Tuesday, April 11th, 2006

Apollo 13

apollo13

It was yesterday. Did you remember? I didn’t until until Transterrestrial Musings reminded me, but I usually don’t remember anniversaries. At least this time I don’t have to buy flowers on my way home, but a movie night may be in order. 

Of Space Phlebotomy and Chipped Teeth

Tuesday, April 11th, 2006

Here’s something I hadn’t thought about. (And I’m willing to bet few people have.) Ever consider how many things us earthbound folks take for granted, but would require some additional thought in space?

Sure. Astronauts have to eat and sleep in space, along with all the other things they normally do on earth, but without the benefit of gravity.  According to New Scientist Space, simple procedures like getting blood samples are a little more complicated when human health emergencies arise in space. 

Space Needle

Taking blood from arteries can be crucial in diagnosing problems in health emergencies – but doing so in the microgravity of space is tricky and potentially dangerous.

Now researchers have come up with a potential solution – a thumb-sized gadget that collects a sample from the earlobe.

Blood is easiest to collect from veins, but this blood is on its way back to the heart and has been de-oxygenated and altered in the body’s tissues. This means it is not as useful for monitoring serious health problems as blood coming fresh from the heart in arteries.

"But the technique to collect blood from the artery is complicated and needs a lot of training," says Thais Russomano, at the Microgravity Laboratory of PUCRS University in Brazil. "It can also be painful and blood clots or infection can result. So it can be a bit dangerous to perform that in space."

So Russomano and her colleagues created the device to collect samples of "arterialised blood" from the earlobe. This serves as an accurate substitute for arterial blood. The system clips onto a subject’s earlobe and contains both a small cutting blade and a collection chamber, to ensure no blood can spill and contaminate the spacecraft. The device is operated with a twist and is said to be virtually painless.

Kinda gives the term "space needle" a whole new meaning doesn’t it? 

Maybe you should take it with a grain of salt, as New Scientist Space also reports that they were duped some art students who claimed to have invented a "cell phone tooth" by implanting a vibrating radio receiver in a human tooth.  So were a a few others, including Time magazine and Wired, the latter of which just exposed the fraud

Then again, maybe no one should be embarrassed by this. After all one person’s idea of a joke is often turns into someone else’s idea of "crazy enough to work." Scoble recently posted about a guy who implanted an RFID chip into his hand and posted a video about it.  (It’s been done before, of course.) And if you believe The Register, Belgian scientists have embedded RFID chips into — wait for it — human teeth. 

So, hoax or no, the "cellphone tooth" isn’t all that far fetched. And if it comes to pass, those who were duped before can claim "we always new it was possible" and claim the cutting edge.

To Mars and Back – In One Day

Tuesday, April 11th, 2006

Ever hear that something is “physically impossible?”  It carries a lot more weight coming from physicists. How do you respond? Can the speed of light be exceeded?
 
According to an annual award presented by the American Institute of Aeronautics and Astronautics, the fanciful dreams of interstellar travel using a real “hyperdrive” might indeed be possible. Based largely on the work of the late Burkhard Heim, a theoretical physicist whose advanced theories still baffle most physicists today, we could be on the verge of a propulsion revolution:

 
This paper is the third one in a series of publications, describing a novel and revolutionary space propulsion technique, based on a unified field theory in a quantized, higher-dimensional space, developed by the late Burkhard Heim and the first author, termed Heim quantum theory (HQT) in the following. It is interesting to note that this theory shares a similar physical picture, namely a quantized spacetime, with the recently published loop quantum theory (LQT) by L. Smolin, A. Ashtektar, C. Rovelli, M. Bojowald et al. [11, 24-28]. LQT, if proved correct, would stand for a major revision of current physics, while HQT would cause a revolution in the technology of propulsion.

 
The paper, “Guidelines for a Space Propulsion Device Based on Heim’s Quantum Theory,” goes into considerable detail. What got physicists buzzing in January was a piece in New Scientist, overwhelming all who are familiar with Heim’s work with hundreds of questions and unprecedented attention.
 
It’s this type of game-changing new science that NASA was looking for. The story was picked up by The Scotsman, interviewing some who worked on the AIAA submission:
 

Prof Hauser, a physicist at the Applied Sciences University in Salzgitter, Germany, and a former chief of aerodynamics at the European Space Agency, cautioned it was based on a highly controversial theory that would require a significant change in the current understanding of the laws of physics. "It would be amazing. I have been working on propulsion systems for quite a while and it would be the most amazing thing. The benefits would be almost unlimited," he said.

 

Some people look at Heim’s work like it came from another planet. Maybe it did.

Propelling through multidimensional hyperspace might afford the possibility of exploring the closest earth-like exoplanet, discovered a couple of years ago, orbiting mu Arae, a sun-like star. The planet is 14 times the mass of earth and is a mere 50 light years away.

Punch the hyperdrive and we can get there in less than 11 years.

 

Mars, In Color

Monday, April 10th, 2006

Friday saw the release of the first color image from NASA’s Mars Reconnaissance Orbiter.

ABC News reports:

The crisp test images released Friday revealed pocked craters, carved gullies and wind-formed dunes in Mars’ southern hemisphere. The diverse geologic features show the importance of water, wind and meteor impacts in shaping the Martian surface, scientists said.

 

The orbiter, the most advanced spacecraft ever sent to another planet, reached Mars on March 10 and slipped into an elliptical orbit. Over the next six months, it will dip into the upper atmosphere to shrink its orbit, lowering itself to 158 miles above the surface.

Last month, the orbiter beamed back the first view of Mars from an altitude of 1,547 miles. Those first test images were meant to calibrate the high-resolution camera aboard the spacecraft. The latest images were taken at the same time, but scientists spent several weeks processing them.

The Reconnaissance Orbiter will begin collecting data in November, and scientists expect the resolution of those images to be nine times higher.

The image is in infrared color– so the colors seen in this post are not what would be seen by the human eye.

 For additional information on the above image, click here.
 

 

Boeing Orbital Express Passes Major Milestones

Friday, April 7th, 2006

SpaceDaily reports:

 The Boeing Orbital Express system, a Defense Advanced Research Projects Agency (DARPA) program aimed at demonstrating fully autonomous on-orbit satellite servicing, last month completed two major test milestones.

The program completed its Baseline Integrated System Test (BIST) of the Autonomous Space Transport Robotic Operations (ASTRO) spacecraft and a series of electromagnetic interference and compatibility tests to verify component operation in the spacecraft’s actual electromagnetic environment….

 The Orbital Express System consists of two satellites: Boeing’s ASTRO servicing spacecraft and NextSat, a prototypical, modular next-generation serviceable client satellite developed by Ball Aerospace.

The Orbital Express launch is scheduled for October, when the system will demonstrate for the first time: fully autonomous rendezvous out to 7 km with a capability that could support rendezvous at separation distances up to 1,000 km; soft capture and sub-meter range autonomous station-keeping; on-orbit refueling and component replacement as well as other robotic operations. Upon a successful demonstration, Orbital Express will provide the foundation for developing an operational system that can provide routine on-orbit servicing of existing and future space assets.

The full article can be found here