Reach for the stars at the Euro Space Center. Find out everything you need to know about space — from the origins (起源) of the universe to the future space exploration plans. Light, sound and special effects help to bring your space journey to life. Throughout your tour, our specially trained guides will answer your questions and provide you with any information you require.

    Begin your tour with our exhibition about the planets, then move on to the Space Laboratory and see some of the experiments carried out in space. Visit our international space station, where you can climb into our full-scale Space Shuttle model and experience life on board as an astronaut.

    You will know all about space by now and to help you further, our Space Center astronaut will tell you about how young people train as astronauts in our own training school. Finally, you can watch our amazing Space Show in our IMAX cinema, which will help you understand everything you have learned during your visit better.

    Outside we have an outdoor exhibition including a giant solar system, full-size rocket models and outdoor games. Don't worry if it rains — much of this is under cover.

    After that, why not visit our restaurant Resto Space for food and drink on a space theme? And don't forget our Space Shop, offering you a lot of gifts to take home.

    The Euro Space Center is open every day during school holidays, and also during other times except Mondays. Opening times are 10:00-5:00. For entrance fees, call our booking service on + 32-61-650133. Or you can email us for up-to-date entry information at info@eurospacecenter.be.

    When Carson Palmer, a professional American football player, hurt his arm a few years ago, he took a week off from throwing the football. But in his head, Palmer practiced every day. The following weekend, Palmer had the best game of his life.

    For more than a century, scientists have been trying to understand how this mental training works. In the 1930s, researchers proved by experiment that when you're imagining an action, your brain sends signals to your muscles(肌肉) which are too weak to tighten the muscles but might help train the body to perform. In other words, mental practice might create a pattern in your head, like an inner how-to guide for a particular skill.

    Sports psychologists have conducted hundreds of studies comparing imagined and physical practice for actions. On the whole, the research shows that mental training works. A 2012 study, for example, compared 32 amateur golfers who practiced hitting the balls to another 32 who merely held a golf club in their hands and visualized（想象）their swings. Under the same training rules, both groups improved their skills by getting the ball about 4 inches closer to the hole.

    Visualization has advantages over the real thing: You can do it anywhere, even when injured. It is safe-a major plus for high-risk performers such as gymnasts and surgeons. And you can practice for longer periods of time because you're not restricted by physical tiredness, That's not to say it's easy, we've had Olympic-level athletes sitting in our lab, visualizing the movements for two hours," says Tadhg Macintyre, a sports psychologist at the University of Limerick in Ireland. “When we're done, they're absolutely tired.”

    It doesn't work for everyone, though. "If you're a novice, the effect can be harmful,” warns Macintyre. If you're trying to visualize a free throw, and you don't even know the proper movement, then you're probably going to mentally practice the wrong skill.”

B

    Cities usually have a good reason for being where they are, like a nearby port or river. People settle in these places because they are easy to get to and naturally suited to communications and trade. New York City, for example, is near a large harbour at the mouth of the Hudson River. Over 300 years its population grew gradually from 800 people to 8 million. But not all cities develop slowly over a long period of time. Boom towns grow from nothing almost overnight. In 1896, Dawson, Canada, was unmapped wilderness(荒野). But gold was discovered there in 1897, and two years later, it was one of the largest cities in the West, with a population of 30,000.

    Dawson did not have any of the natural conveniences of cities like London or Paris. People went there for gold. They travelled over snow-covered mountains and sailed hundreds of miles up icy rivers. The path to Dawson was covered with thirty feet of wet snow that could fall without warming. An avalanche(雪崩) once closed the path, killing 63 people. For many who made it to Dawson, however, the rewards were worth the difficult trip. Of the first 20,000 people who dug for gold, 4,000 got rich. About 100 of these stayed rich men for the rest of their lives.

    But no matter how rich they were, Dawson was never comfortable. Necessities like food and wood were very expensive. But soon, the gold that Dawson depended on had all been found. The city was crowded with disappointed people with no interest in settling down, and when they heard there were new gold discoveries in Alaska, they left Dawson City as quickly as they had come. Today, people still come and go — to see where the Canadian gold rush happened. Tourism is now the chief industry of Dawson City — its present population is 762.

    Have you ever had your hand held during a dental procedure you feel uneasy about? What about a dental office that mimics（模仿） the spirit of Disneyland? If you're looking for a dental office that provides the best care and the best environment, you're looking for Dr. Licking's office in Sunnyvale.

    Office manager Judy, who has worked with Dr. Licking for 38 years, speaks highly of his kindness. She believes that the office is “the Disneyland of dentistry”. Everyone from children to their grandparents loves the environment and care they receive from this welcoming office.

    Dr. Licking is known as the best dental care provider for anyone who fears facing appointments with the dental office. The staff goes out of their way to make patients feel comfortable and at ease. Dr. Licking and Judy set the standard with their saying, “when someone comes to your home, you stand up and welcome them, like an old family friend.”

    Dr. Licking's office has all. They recently relocated to put the new equipment into their practice. The office is equipped with an intra-oral video camera, and as a patient you can get pictures of your teeth as you're walking out the door.

    Setting himself apart from other dentists, Dr. Licking continues his education beyond what is required. For this reason, he is one of few dentists in the country who offers ozone treatment. Ozone can naturally stop decay (蛀蚀) in its tracks. For more information on this new technology, visit their website at www.drjohnlicking.com.

    Dr. Licking's office is Diamond Certified, an honor given only to companies with the higher quality after extensive and continual research. Dr. Licking's office extends an invitation to you to meet their gentle staff and offers you a free office visit, including x-rays and an exam.

    The office holds extended hours ranging from 7 a. m. to 8 p, m., Monday through Thursday. Don't worry if you have an emergency. Dr. Licking's office responds to all emergencies and urgent calls.

    JOHN LICKING, D.D.S.

    Cosmetic & Family Dentistry since 1970

    408—736—6235

    drjohnlicking.com

    877 W. Fremont Ave. Suite C3, Sunnyvale

    "IF ALIENS are so likely, why have we never seen any？" That is the Fermi Paradox（悖论） named after Enrico Fermi, a physicist who posed it in 1950.

    Fermi's argument ran as follows. The laws of nature supported the appearance of intelligent life on Earth. Those laws are the same throughout the universe. The universe contains zillions of stars and planets. So, even if life is unlikely to arise on any particular astronomical body, the sheer abundance of creation suggests the night sky should be full of alien civilizations. Fermi wondered why aliens had never visited the earth. Today, the paradox is more usually cast in light of the inability of radio﹣telescope searches to detect the equivalent（相等的） of the radio waves that leak from Earth into the universe, and have done for the past century.

    Thinking up answers to this apparent contradiction has become something of a scientific parlour（客厅）game. Perhaps life is really very unlikely. Perhaps the priests are right: human beings were put on Earth by some creator God for His own unknown purposes, and the rest of the universe is merely background scenery. Perhaps there are plenty of aliens, but they have decided that discretion is a safer bet than gathering together. Or perhaps galactic（银河的） society avoids communicating with Earth specifically. One frightening idea is that technological civilizations destroy themselves before they can make their presence known. They might blow themselves up after inventing nuclear weapons （an invention that, on Earth, Fermi had been part of）, or cook themselves to death by over﹣burning fossil fuels.

    In a paper published last month on arXiv, an online repository（文献库） , a group of three astronomers at Pennsylvania State University have analyzed the history of alien hunting and come to a different conclusion. In effect, they reject one of the paradox's main theory. Astronomers have seen no sign of aliens, argue Jason Wright and his colleagues, because they have not been looking hard enough.

    Twenty-one years ago, my husband gave me Sam, an eight-week-old schnauzer（雪纳瑞犬）, to help ease the loss of our daughter. Sam and I developed a very special bond over the next years.

    At one point, my husband and I decided to move to a new home in New Jersey. Our neighbor, whose cat had recently had kittens, asked if we would like one. We were a little apprehensive about Sam's jealousy and how he would handle his turf（地盘）being invaded, but we decided to risk it.

    We picked a little, gray, playful ball of Fur. She raced around chasing imaginary mice and squirrels and jumped from table to chair in the blink of an eye, so we named her Lightning.

    At first, Sam and Lightning were very cautious with each other and kept their distance. But slowly, Lightning started following Sam — up the stairs, down the stairs, into the kitchen. Later, when they slept, it was always together; when they ate, it was always next to each other. When I took either one out, the other was always waiting by the door when we returned. That was the way it was for years.

    Then, without any warning, Sam was diagnosed as having a weak heart. I had no other choice but to have him put down. The pain was nothing compared with what I experienced when I had to walk into our house alone. This time, there was no Sam for Lightning to greet and no way to explain why she would never see her friend again.

In the following days, Lightning seemed heart-broken. I could see the disappointment in her eyes whenever anyone opened the front door, or the hope whenever she heard a dog bark.

    One day as I walked into our living room, I happened to see Lightning was lying next to the sculptured replica（复制品）of Sam that we had bought a few years ago, one arm wrapped around the statue's neck, contentedly sleeping with her best friend.