On February 6, Space X, a private US aerospace company owned by Elon Musk, has successfully launched its new Falcon Heavy spacecraft, making it the world's most powerful rocket.

    Falcon Heavy is the largest rocket since the retirement of NASA's Saturn V, which was used for the Moon missions in the 1970s. “Falcon Heavy can launch about 64 tonnes into low Earth orbit-that's almost three times more than the current running biggest launch vehicle, Delta IV Heavy, ”Imperial College astrophysicist David Clements told AI Jazeera. According to Space X, Falcon Heavy can lift into orbit a mass greater than a 737 jet loaded with passengers, crew, luggage and fuel.

    The rocket was designed with the idea of earning humans into space and opening the possibility of flying missions with people to the Moon and even Mars. For its first voyage, it carried Musk's $ 100,000 cherry-red Tesla sports car and a fake space-suited human model fixed in the driver's seat. Musk joked that “it may be discovered by some future alien race”.

    Falcon Heavy went into space on its last flight on February 6. The launch took place at NASA's Cape Canaveral Air Force Station and Kennedy Space Center in the US state of Florida, the spot also used for the Apollo 11 Moon mission and several space shuttle launches. It was delayed by several hours because of high winds in the upper atmosphere. Minutes after take-off, the two outer boosters (助推器) landed at the nearby Cape Canaveral Air Force Station.

    Space X announced plans to eventually use Falcon Heavy to launch two paying space tourists on a trip around the Moon. However, Musk said he will probably reserve that mission for another launch system, the BFR. Recently, Space X scheduled to launch a Falcon 9 rocket for NASA's TESS mission on March 20, 2018. It is reported that Space X is scheduled to complete 30 independent launch missions in 2018, at least half of which will use Falcon 9.

    It is not easy getting the attention of tourists away from the well-known white sandy beaches of Byron Bay. But in this relying Australian surf town, a solar (太阳能的)-powered train might just do a good job.

    Opening to the public in December 2017 along a 1.9-mile-long stretch (一段) of track that sat abandoned for more than a decade, the Byron Bay Rail Company has breathed new life into a pair of disused railcars dating back to the 1940s. They're now used to transport passengers between Byron Bay's central business district and the North Beach area. After remaining in service as part of a regional passenger rail network until the early 1990s, the aging railcars were out of service and sat uncared for — almost destroyed by time and unpleasant Aussie climate — in a railyard for more than 20 years. You'd never know it by looking at these nearly 70-year-old workhorses today, though: they've been decorated, equipped, topped with custom-made photovoltaic panels (定制的光电池板) and rearranged to accommodate up to 100 seated beach goers.

    It's those train-top PV panels that truly set the Byron Bay Rail Company's flagship train apart from other heritage rail restoration projects.

    Drawing additional power from a 30-kilowatt solar array (阵列) located atop the train's storage building, the tain is said to be the first in the world to be completely powered by the sun. Solar energy caught by the 6.5-kilowatt train-top solar panels is stored directly in an onboard battery system that powers motors, lighting and the like. When stopped at its home platform, the train pushes into chargers for quick battery top-offs with electricity produced by the storage building's rooftop solar array. The 77 kilowatt-hour battery can hold enough juice for 12 to 15 runs on a single charge. During long periods of cloudiness when the solar arrays don't get enough sun, the train uses the main electric network, supply using renewable energy sold by community-based service Enova Energy.

    The Byron Bay Rail Company's first-in-the-world folly solar-powered train is a good example of historic rail preservation with a 21^st century development. Operating as a not-for-profit company, the Byron Bay Rail Company also expected the AU$4 million line to be a way to relieve traffic jam between downtown Byron Bay and the rapidly growing North Beach area. Really, there's no bigger unpleasant thing than sitting in bad traffic for 40 minutes trying to get to the beach.

    A good hiking trip should be planned out ahead of time. Whether it is a hike on a mountain trail or through the woods, an enjoyable hiking trip can easily turn into a dangerous situation if safety is not considered well. North Mountain State Park recommends hikers consider the following tips before hitting any trails:

    Make a copy of your itinerary to give to a family member or a friend. Make sure that someone close to you knows where you are and how long you will be gone.

    Wear a good pair of hiking boots or strong athletic shoes. The right shoes will keep you safe, warm, and comfortable.

    Prepare for various types of weather conditions. Check the forecast before you leave; take along sunglasses and extra clothing (e.g., a hat and /or a jacket for a day hike).

    Pack plenty of food and water. Consider how long your hike will be and pack accordingly.

    Pack basic and necessary supplies. Bring a first-aid kit, a flashlight, a pocket knife, a map of the area (if available), and a compass. You may need other supplies, such as matches, depending on how long your hike will be.

    Determine what time the sun sets. This information is available in most local newspapers. Most people become lost after nightfall, so it is important to know this information.

    Stay on properly marked trails. Stay on established trails to decrease the chances of becoming lost. Staying on established trails also lowers the risk of doing harm to rare and endangered plants.

    Carry a whistle(哨子). Using a loud whistle is a good way to call attention to your location if you get lost.

    Keep an eye out for wildlife. Do not approach animals in the wild, even if they seem friendly.

    The Washington State Parks and Recreation Commission (WSPRC) manages a diverse system of more than 120 parks. The 90-year-old park system, which receives nearly 48 million visits a year, ranks 4th nationally in day-use attendance, 10th in overnight attendance, and the WSPRC has a smaller budget than most states.

    Home from the Navy, I started school at Greenville College in my hometown of Illinois. I'd been out of high school for four years, but my high school headmaster, Mr. Gardner, invited me to a Valentine's Day dance party at school. The thought of seeing my former teachers was exciting. So I agreed.

    When Friday came, I cleaned up, dressed up and drove to the high school gym. I chatted with my teachers and approached Mr. Gardner to thank him before leaving. Just then, the band started playing and a young girl stood up to sing. One look at and I was crazy—I had never seen such a beautiful girl!

    I asked Mr. Gardner who she was, and he answered, “That's Marilyn Riley, Cut Riley's daughter.” I was shocked to say the least. They lived just around the corner from me. I walked across the gym floor to introduce myself, “Hi, I'm Jack Joseph.”

    “I know who you are,” was her not-too-friendly response.

    “Would you like to dance?” I asked. “No! I'm working,” she shot back.

    “Can I call you next week for a movie date?” I asked. “No,” was her response.

    For the next month I phoned, trying to set up a date. She always had the same answer: No. then one rainy afternoon in March as I was driving home after basketball practice, I saw Marilyn, walking with no umbrella, no raincoat, no hat. I pulled alongside her and asked if she needed a ride, half expecting her to say no. instead, she stepped over the roadside and sat down on the seat next to me. It was only a few blocks to her house, but after pulling into her driveway we talked for 45minutes. It was magic from then on.

    When I was about 4 years old, I decided to go to Disney World. For most young kids, it's a normal request, but I had cerebral palsy(脑瘫).Walking into anywhere, let alone a crowded place like Disney World was, to put it lightly, a tall order. Luckily, I had people in my corner to help me. Over the next three years, I worked with physical doctors, acquired a walker, and practiced walking, standing, and balance—all skills that I would need to turn my goal into a reality.

    I remember the feeling when my legs would protest doing any more work. Despite this, everyone else told me I could do it, so I kept it up. It was all because of people like my parents, brothers, teachers, and doctors that I was able to grow so much, both physically and mentally. Constantly pushing me to “walk on,” yet encouraging me whenever I needed it.

    On June 9, 2008, as I stood in the tunnel leading into Main Street, My dad asked me if I wanted any help. I instantly replied, “No!” and situated myself facing the end of the tunnel, feet planted firmly, heart most likely beating out of my chest. Then I went, walking ever so slowly at first, then gradually speeding up. Step, step, step, step, bump. Holding fast onto the handlebars, I gathered up all my strength, picked up my walker and straightened out, picking up my pace once again. It wasn't too long before the cheering increased because I had made it to the end, where my mom was waiting with tears in her eyes and arms open wide ready to hug her son and tell him how proud she was.

    Looking back on that experience, I realize something pretty thoughtful. Every once in a while, life will throw a few bumps in the road. Though it may set you back for a bit, don't let it stop you. Pick yourself back up and finish. It's worth it. Besides, there just might be someone there cheering you on along the way.

The teenage Snowboarder.

I was born in Denver, USA. and started snowboarding aged eight when my dad took me to a resort in the mountains. About two hours from Denver. The hill looked unbelievably steep and scary. So My dad had to do a lot of persuading to get me on a board. Because I was so young. I hadn't even thought of asking him if I could start snowboarding? But he was already into it and wanted me to love it, too—-He made it look so simple, and in the end I managed just fine.

After this experience, it wasn't long before I'd developed a love of sport and had improved my ability too. I started competing aged ten. Some people entered loads of competitions and ended up getting bored of snowboarding. But my love of taking part and winning got stronger as I got older, which always help me to push myself harder. I enjoyed not having a fixed plan and sometimes this went well, like when I became the first female ever to get a perfect 100 at a local competition. I wasn't sure I'd even attempted the jumps that got me the score until I actually set off. That achievement increased my trust in my own abilities.

During the summer I focused on training and my studies while there's no snow. Although I trained daily, it's nice not having to stick to quite a strict diet like I did in the winter. I also got to spend lots of time with my friends then. It's the best way of dealing with not being able to do what I loved so much and what I was really good at.

Now. I have to think carefully about my future. Snowboarding is such a huge part of my life now. But I also feel it's important to have something else I can do. just in case I don't succeed as a professional snowboarder or I get injured. I'm wondering whether becoming a doctor is a possibility. if my active life allows time for doing a college degree, it's impossible to imagine myself growing tired of the sport. But I can't go on snowboarding my whole life.