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by: John Lenaghan The reward of gardening is enjoying the fruits and vegetables of your labour. You may be overlooking a delicious and nutritious crop right under your nose – roast pumpkin seeds. Pumpkins have been a popular part of vegetable gardens for centuries. The word comes from the Greek word “pompon,” which means large melon. Native [...] Tofu is one of the healthier foods that you should incorporate in your diet. It is low in cholesterol and calories yet it is high in protein and vitamins. Also known as bean curd, tofu is often used in soups. It is quite easy to prepare and with some quick and easy recipes, you can [...] Pasta meals are easy to cook. The pasta itself just needs to be placed in boiling water and can be cooked within 10 to 15 minutes – depending on the type of pasta of course. While the pasta is boiling, you can prepare your desired sauce – whether it may be tomato, pesto or cream [...] |
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Snapshot of the International Space Station
 On March 13, 2008, the International Space Station passed across the field-of-view of Germany's remote sensing satellite, TerraSAR-X, at a distance of 195 kilometers, or 122 miles, and at a relative speed of 34,540 kilometers per hour, or more than 22,000 mph. In contrast to optical cameras, radar does not 'see' surfaces. Instead, it is much more aware of the edges and corners which bounce back the microwave signal it transmits. Smooth surfaces such as those on the station's solar generators or the radiator panels used to dissipate excess heat, unless directly facing the radar antenna, tend to deflect rather than reflect the radar beam, causing these features to appear on the radar image as dark areas. The radar image of the station therefore looks like a dense collection of bright spots from which the outlines of the space station can be clearly identified. The central element on the station, to which all the modules are docked, has a grid structure that presents a multiplicity of reflecting surfaces to the radar beam, making it readily identifiable. This image has a resolution of about one meter (about 39 inches). In other words, objects can be depicted as discrete units--that is, shown separately--provided that they are at least one meter apart. If they are closer together than that, they tend to merge into a single block on a radar image. Since this image was taken, the station has expanded and is more than 90 percent complete, including a full complement of solar arrays. Image Credit: DLR Read More |
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