Uh oh! Out of juice 310 million miles away
Uh oh! Philae is out of juice 310 million miles away.
Uh oh! Philae is out of juice 310 million miles away.
Fifty-six hours after landing on the surface of a comet, Philae sent one more round of data about its new home across 310 million miles of space. Then, its power went out."@Rosetta, I'm feeling a bit tired, did you get all my data? I might take a nap..." read a message on the @philae2014 Twitter feed.The Rosetta mission's twitter response: "You've done a great job Philae, something no spacecraft has ever done before."And then later: "S'ok Philae, I&ve got it from here for now. Rest well..."
All the experiments on board the lander had a chance to run and return information back to Earth. Philae's instruments scooped up material from the comet's surface, took its temperature, sent radio waves through its nucleus, and went hunting for hints of organic material. Cameras took the first panoramic images from the surface of a comet.It has been a whirlwind ride for the lander, which was dropped onto the surface of the mountain-sized comet 67P/Churyumov-Gerasimenko on Wednesday morning. Two harpoons that were designed to tether it to the surface failed to fire, and scientists say the lander made two bounces before becoming stable. The first bounce caused the lander to go one-third of a mile into the air.Friday morning, ESA officials expressed concern that the lander would not have enough battery power left to send back any more data from experiments it was conducting on its new, icy home.&When Philae landed on the comet on Wednesday, it had enough battery power for about 60 hours of work. Scientists initially hoped that it would continue to operate on solar power, but the lander seemed to have settled in a hole on the comet, where it was surrounded by rock-like structures that block the sun.Stefan Ulamec, the lander manager from DLR, said the that one of the solar panels on the lander was getting about an hour and 20 minutes of sunlight a day. Two other panels got just 20 to 30 minutes a day, he said.At a news conference Friday morning before the last signal was received, Ulamec said it was possible that scientists would not hear from the lander again. "We are hoping to get contact again this evening, but it is not secured," he said. "Maybe the battery will be empty before it talks to us."&Happily, that turned out not to be the case. On Friday evening, ESA reported that all the science experiments had been deployed, and that the lander had been rotated 35 degrees in an attempt to get more sun on one of its larger solar panels.&There is a chance that as the comet flies closer to the sun, the increase in solar energy will allow ESA to communicate with Philae once again. ESA officials say the odds of that happening are small, but with Philae, the little lander that could, anything is possible.[]Philae Lander: Live tweetsStorified by & Fri, Nov 14 :56ACQUISITION OF SIGNAL #AOS ESOC received contact with @Philae2014 now lost and waiting re-acquisition #CometLandingESA OperationsSIGNAL IS BACK #AOS Stable comms w/ @Philae now reestablished - telemetry & science data are flowing from the surface of #67P #CometLandingESA OperationsScience from an alien world: #COSAC instrument data among info now flowing from @Philae2014 #cometlanding http://t.co/s7aBNAaaUqESA OperationsMission team at #esoc watching closely as science data flow from @Philae2014 #cometlanding http://t.co/ZiqUHILelYESA OperationsScience rules! Follow me&&and "like" Los Angeles Times Science & Health on .来自Wikimedia Commons
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10Best: Roller-coaster rides of your lifeThrill seekers meet their match on these top coasters.Post to Facebook10Best: Roller-coaster rides of your life 

 Thrill seekers meet their match on these top coasters.


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Larry Bleiberg, Special for USA TODAY
One of the country's most famous coasters, the Cyclone at Luna Park in New York's Coney Island has been recently renovated, making for a much smoother ride. (Photo: Paul Ruben)Outlaw Run at Silver Dollar City in Branson, Mo., is a new rare hybrid wood coaster using curved steel beams instead of traditional tracks. (Photo: Paul Ruben)The Seven Dwarfs Mine Ride in the new Fantasyland of Disney World's Magic Kingdom park offers thrills and incredible audio animatronic theming, making it entertaining on many levels. (Photo: Walt Disney World)The Alpine Coaster at Glenwood Caverns Adventure Park in Glenwood Springs, Colo., is a sled ride that zooms down a hill, but it can be considered it a roller coaster because "it runs on a track, and it's powered by gravity." (Photo: Paul Ruben)The Beast at Kings Island amusment park in Ohio is the world's longest wooden coaster, stretching on for 7,400 feet. (Photo: )Thunderbolt at Kennywood park in West Mifflin, Pa., is a wooden coaster built in reverse order, with a drop at the beginning, a lift hill in the middle and the fiercest drop at the end. (Photo: Paul Ruben)The unusual X2 coaster at Six Flags Magic Mountain in Valencia, Calif., has two sets of track, one for the train and one that controls the seat. (Photo: Paul Ruben)The Millennium Force coaster at Cedar Point in Sandusky, Ohio, is all about speed. The ride is accentuated by the sweeping Lake Erie views from the top of the lift hill. (Photo: Cedar Point)The Wildcat at Pennsylvania's Hersheypark takes advantage of the topography, keeping up its speed as it progresses down a hill. (Photo: H. Darr Beiser, USA TODAY)Bizarro at Six Flags New England in Agawam, Mass., has a minimalist design with no side wall to the trains, leaving riders feeling vulnerable. (Photo: Paul Ruben)ReplayAutoplayShow ThumbnailsShow CaptionsOutlaw Run at Silver Dollar City in Branson, Mo., is a new rare hybrid wood coaster using curved steel beams instead of traditional tracks.(Photo: Paul Ruben)
TWEETEMAILMORETheme parks keep adding roller coasters, but the key to a thrilling ride hasn't changed, says Paul Ruben, North American editor of the trade publication . "What makes a good coaster? In one word: pacing," he says. "It should be one adrenaline rush after another. There should never be a dull moment." Ruben, who has been riding coasters for decades, shares his favorite rides with Larry Bleiberg for USA TODAY.Bizarro at Six Flags New EnglandAgawam, Mass.There's a reason this big steel coaster is near the top of every fan's list. "It's non-stop action from beginning to end," Ruben says. "You're off the seat so often that the seats seem superfluous." Even the minimalist design of the coaster cars adds to the experience, he says. "There's no side wall to the trains. There's nothing to protect you. You feel very vulnerable through the entire ride, which adds to the thrill." 413-786-9300; Tip: If you want a really wild ride, sit in the back. "You get the whip action as you go around the curves. The side thrusts are superior."Outlaw Run at Silver Dollar CityBranson, Mo.Ruben describes this as a new, rare, hybrid wood coaster using curved steel beams instead of traditional tracks. "It makes for a very smooth ride, and it turns the rider upside down twice." He also likes the quick pacing. "Things are happening faster than you can set up for them. You go through a loop, and before you realize it, you start to do something else. When you get to the end, you say 'What just happened?'" 800-888-7277; Tip: Try Fire in the Hole, a 42-year-old indoor coaster with a story. "It's supposed to be running through a mine and you have to get out before an explosion."Millennium Force at Cedar PointSandusky, OhioThis ride, topping out near 93 mph, is all about speed. "It's fast, fast, fast. You're racing through the entire ride," Ruben says. "Fortunately, you're lashed into the seat, and the train is lashed onto the track. Every turn seems too quick, but somehow, it all stays together." The ride is accentuated by the sweeping Lake Erie views from the top of the lift hill. "You get a blast of wind in your face that lasts the whole time." 419-627-2350; Tip: Get there early as a queue forms quickly. "They have a lot of coasters at Cedar Point, but this one has the longest line."PHOTO GALLERY: X2 at Six Flags Magic MountainValencia, Calif.This unusual coaster has two sets of track, one for the train and one that controls the seat. "As you go through the ride, the position of your seat varies, offering unexpected thrills. When you plunge down the first drop, you're going face-first down the hill. As the train goes through a loop, the seat rotates so you're always sitting up, and as you exit the loop, you suddenly do a back flip," Ruben says. "I call it a tumbling coaster. It's the only ride of its kind in North America." 661-255-4100; Tip: Sit on the outside. "There's no track beneath you and you have a sense of flying."Thunderbolt at KennywoodWest Mifflin, Pa.This Pittsburgh-area ride is unlike any other wooden coaster. "Things happen in reverse order," Ruben says. "You immediately drop into a ravine. The lift hill is in the middle, and the most fierce drop is at the end. It's like the coaster was built backwards." 412-461-0500; Tip: Be sure to ride all the park's coasters. "They're all distinct and have their own personalities. This is a classic, traditional park that has kept up with the times."The Beast at Kings IslandKings Island, OhioThe world's longest wooden coaster, stretching 7,400 feet, is also the world's longest-lasting coaster, offering a ride that clocks in at three minutes, 40 seconds. "It's a wonderful coaster. It's so long, it actually has two lift hills," Ruben says. During part of the ride, the coaster zooms through a forest. "People in the park can't see the Beast, but they can hear the screams." 513-754-5700; Tip: After riding the Beast, stroll across the midway to the Banshee. "It's a very nice ride, the world's longest inverted looping coaster."Alpine Coaster at Glenwood Caverns Adventure ParkGlenwood Springs, Colo.Unlike more familiar coasters, this is a sled ride that zooms down a hill. But Ruben considers it a roller coaster because "it runs on a track, and it's powered by gravity." It's reminiscent of the first roller coasters, which were developed 400 years ago in Russia as rides down wood-supported hills. But on this ride, visitors sit on a sled and can control their speed as they zoom down a mountain. 800-530-1635; Tip: Ignore the hand brakes and descend as fast as you can. "You're strapped to the sled, and the sled is fa you're not going to go anywhere."Seven Dwarfs Mine Ride at Magic KingdomLake Buena Vista, Fla.While it's usually the kiss of death to call a coaster family-friendly, Ruben says, this new ride anchoring the redesigned Fantasyland offers thrills and incredible audio animatronic theming, making it entertaining on many levels. It's a new-style coaster, he says. "The seats are mounted on pivots, and as the train goes through curves, the G-forces go straight down through the seat of your pants. It's smooth, yet it's thrilling. You get off the ride and you're humming 'Heigh-ho, heigh-ho.'" 407-939-5277; Tip: As you pass the house at the end of the ride, look carefully. "You'll see the Wicked Witch and her apple for Snow White. She's lurking just outside the house."DISNEY WORLD: Wildcat at HersheyparkHershey, Pa.This wooden coaster takes advantage of the topography, keeping up its speed as it progresses down a hill. "It's non-stop action from beginning to end. There are lots of moments of negative gravity, and the pacing is beautifully done," Ruben says. 717-534-3860; Tip: When you leave the park, stop at the free-admission Hershey's Chocolate World, devoted to the town's number one product. "They have a ride you take to show you how chocolate is made and they have a little chocolate-themed 3D movie."Cyclone at Luna ParkConey Island, N.Y.One of the country's most iconic coasters has been renovated, making for a much smoother ride. "This is the classic coaster against which all others are compared. It has been around since 1927, and so many people have ridden it over the years," Ruben says. And while the area was once seedy, it has been cleaned up. "It looks great. People are coming back. There's a renaissance at Coney Island. 718-373-5862; Tip: Ride Thunderbolt, which opened in June, making it the first major new coaster in Coney Island in nearly a century. "The first drop is 90 degrees, straight down."ALSO ONLINE: ALSO ONLINE:
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