Satellite

Happily, the days of painfully slow dial-up internet speeds are now but a distant memory to many city and town dwelling broadband users throughout Europe. But for the estimated 13 million households living beyond the reach of ADSL or the even greater number who suffer from slow broadband connection speeds, waiting a good while for web pages and media to load into a browser is still the source of daily angst. One solution for surfers eager to grab more bandwidth is to install a satellite service and Eutelsat has just announced that its new KA-SAT high throughput broadband satellite launched in December of last year has just gone into service.  Read More

Directly tracking disease-carrying mice from space would seem to be a tall order – and even without knowing the full capabilities of military satellites, I suspect the ability to do so is still a couple of years off yet. But researchers at the University of Utah have come up with an indirect way of tracking rodents by using satellite images to monitor surges in vegetation that boost mouse populations. Such a method could help forecast outbreaks of rodent-borne illnesses worldwide by allowing the creation of risk maps that show when and where outbreaks are likely to occur.  Read More

Situated as they are, high above the surface of the Earth, satellites are pretty much left to fend for themselves – if a piece of space junk is drifting towards one, for instance, no one is going to be there to push it out of the way. To address this type of situation, engineers from the University of Southampton have developed what they say is the world’s first control system for programing satellites to think for themselves. It’s a cognitive software agent called sysbrain, and it allows satellites to read English-language technical documents, which in turn instruct the satellites on how to do things such as autonomously identifying and avoiding obstacles.  Read More

For those of us who live in the developed world, internet access has become pretty much a given. It’s become so ubiquitous that we almost expect to have it at all times and in all places, but even in this “Information Age,” the majority of the world’s population lacks access to the internet – either because service isn’t available where they are, or they can’t afford it. Kosta Grammatis has a plan, however. Through his charity group ahumanright.org, Grammatis aims to set up a network of satellites that will provide free internet access to everyone in the world. He’s starting by attempting to buy a single used satellite that’s already in orbit and moving it to a location above a developing country.  Read More

China recently launched the state-sponsored Tianditu.cn or "Map World," the country's homegrown answer to Google Maps. While it's an impressive initial effort, the mapping system does resemble Google's a little too much, and it also performs poorly once you navigate outside of Chinese borders.  Read More

There was a time not so very long ago when people who wanted satellite TV or radio required dishes several feet across. Those have since been replaced by today’s compact dishes, but now it looks like even those might be on the road to obsolescence. A recent PhD graduate from The Netherlands’ University of Twente has designed a microchip that allows for a grid array of almost-flat antennae to receive satellite signals.  Read More

An unexpected measurement has been achieved with the Venus Express, a satellite currently studying the atmosphere of Venus. While the satellite was not fitted with instruments to directly measure atmosphere density, the scientists have discovered by measuring the drag as the Venus Express experiences air resistance that the atmosphere is 60 percent thinner than expected. This "working on the fly" approach could allow the scientists to extend the life of the craft allowing them to collect more data.  Read More

Satellite radio, while probably not that popular with the owners of your local radio stations, is great for those of us who want more variety in our listening choices. This is particularly true for people who live in smaller cities, that lack the population base to support stations that feature alternative content. Not everyone is willing to shell out for an in-dash satellite radio receiver for their vehicle, however, which is where many people do the majority of their radio-listening. SIRIUS XM is addressing that issue, with its new portable, transferable XM Snap! satellite radio.  Read More

Satellites and other spacecraft, like most machines, have parts that move against one another. Unlike most machines, however, they operate in extremely cold conditions, their power source is often very limited, and lubricating or repairing them are not exactly easy tasks. It is for these reasons that researchers at Spain’s Universidad Carlos III de Madrid (UC3M) are coordinating the three-year MAGDRIVE project – an international effort to create a mechanical transmission with no touching parts, that doesn’t need any lubrication.  Read More